Added android reay_se HAL 300 implementation am: 23bbb05a22 am: 2974da00f4

Original change: https://android-review.googlesource.com/c/platform/external/libese/+/2383872

Change-Id: I78d384e5142f4e1c3131a7c3dcfca92c4c26f02a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

24 files changed, 3090 insertions, 0 deletions

diff --git a/ready_se/google/keymint/KM300/HAL/.clang-format b/ready_se/google/keymint/KM300/HAL/.clang-format
new file mode 100644
index 0000000..b0dc94c
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/.clang-format
@@ -0,0 +1,10 @@
+BasedOnStyle: LLVM
+IndentWidth: 4
+UseTab: Never
+BreakBeforeBraces: Attach
+AllowShortFunctionsOnASingleLine: Inline
+AllowShortIfStatementsOnASingleLine: true
+IndentCaseLabels: false
+ColumnLimit: 100
+PointerBindsToType: true
+SpacesBeforeTrailingComments: 2
diff --git a/ready_se/google/keymint/KM300/HAL/Android.bp b/ready_se/google/keymint/KM300/HAL/Android.bp
new file mode 100644
index 0000000..fd38d10
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/Android.bp
@@ -0,0 +1,117 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    default_applicable_licenses: [
+        "external_libese_ready_se_google_keymint_KM300_HAL_license",
+    ],
+}
+
+// Added automatically by a large-scale-change
+// See: http://go/android-license-faq
+license {
+    name: "external_libese_ready_se_google_keymint_KM300_HAL_license",
+    visibility: [":__subpackages__"],
+    license_kinds: [
+        "SPDX-license-identifier-Apache-2.0",
+    ],
+    license_text: [
+        "LICENSE",
+    ],
+}
+
+cc_library {
+    name: "libjc_keymint3",
+    defaults: [
+        "keymaster_defaults",
+        "keymint_use_latest_hal_aidl_ndk_shared",
+    ],
+    srcs: [
+        "CborConverter.cpp",
+        "JavacardKeyMintDevice.cpp",
+        "JavacardKeyMintOperation.cpp",
+        "JavacardRemotelyProvisionedComponentDevice.cpp",
+        "JavacardSecureElement.cpp",
+        "JavacardSharedSecret.cpp",
+        "keymint_utils.cpp",
+    ],
+    cflags: ["-O0"],
+    shared_libs: [
+        "android.hardware.security.secureclock-V1-ndk",
+        "android.hardware.security.sharedsecret-V1-ndk",
+        "android.hardware.security.rkp-V3-ndk",
+        "lib_android_keymaster_keymint_utils",
+        "libbase",
+        "libcppbor_external",
+        "libkeymaster_portable",
+        "libkeymaster_messages",
+        "libsoft_attestation_cert",
+        "liblog",
+        "libcrypto",
+        "libcutils",
+        "libjc_keymint_transport",
+        "libbinder_ndk",
+    ],
+    export_include_dirs: [
+        ".",
+    ],
+    vendor_available: true,
+}
+
+cc_binary {
+    name: "android.hardware.security.keymint3-service.strongbox",
+    relative_install_path: "hw",
+    init_rc: ["android.hardware.security.keymint3-service.strongbox.rc"],
+    vintf_fragments: [
+        "android.hardware.security.keymint3-service.strongbox.xml",
+        "android.hardware.security.sharedsecret3-service.strongbox.xml",
+    ],
+    vendor: true,
+    cflags: [
+        "-Wall",
+        "-Wextra",
+    ],
+    defaults: [
+        "keymint_use_latest_hal_aidl_ndk_shared",
+    ],
+    shared_libs: [
+        "android.hardware.security.sharedsecret-V1-ndk",
+        "lib_android_keymaster_keymint_utils",
+        "android.hardware.security.rkp-V3-ndk",
+        "libbase",
+        "libbinder_ndk",
+        "libcppbor_external",
+        "libcrypto",
+        "libkeymaster_portable",
+        "libjc_keymint3",
+        "libjc_keymint_transport",
+        "liblog",
+        "libutils",
+        "android.se.omapi-V1-ndk",
+    ],
+    srcs: [
+        "service.cpp",
+    ],
+    required: [
+        "android.hardware.hardware_keystore.jc-strongbox-keymint3.xml",
+    ],
+}
+
+prebuilt_etc {
+    name: "android.hardware.hardware_keystore.jc-strongbox-keymint3.xml",
+    sub_dir: "permissions",
+    vendor: true,
+    src: "android.hardware.hardware_keystore.jc-strongbox-keymint3.xml",
+}
diff --git a/ready_se/google/keymint/KM300/HAL/CborConverter.cpp b/ready_se/google/keymint/KM300/HAL/CborConverter.cpp
new file mode 100644
index 0000000..7d0fc23
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/CborConverter.cpp
@@ -0,0 +1,521 @@
+/*
+ **
+ ** Copyright 2020, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+#include "CborConverter.h"
+
+#include <map>
+#include <string>
+
+#include <android-base/logging.h>
+
+#include <KeyMintUtils.h>
+
+namespace keymint::javacard {
+using ::aidl::android::hardware::security::keymint::KeyParameterValue;
+using ::aidl::android::hardware::security::keymint::SecurityLevel;
+using ::aidl::android::hardware::security::keymint::km_utils::kmParam2Aidl;
+using ::aidl::android::hardware::security::keymint::km_utils::legacy_enum_conversion;
+using ::aidl::android::hardware::security::keymint::km_utils::typeFromTag;
+
+constexpr int SB_ENFORCED = 0;
+constexpr int TEE_ENFORCED = 1;
+constexpr int SW_ENFORCED = 2;
+
+namespace {
+
+template <KeyParameterValue::Tag aidl_tag>
+std::optional<uint32_t> aidlEnumVal2Uint32(const KeyParameterValue& value) {
+    return (value.getTag() == aidl_tag)
+               ? std::optional(static_cast<uint32_t>(value.get<aidl_tag>()))
+               : std::nullopt;
+}
+
+std::optional<uint32_t> aidlEnumParam2Uint32(const KeyParameter& param) {
+    auto tag = legacy_enum_conversion(param.tag);
+    switch (tag) {
+    case KM_TAG_PURPOSE:
+        return aidlEnumVal2Uint32<KeyParameterValue::keyPurpose>(param.value);
+    case KM_TAG_ALGORITHM:
+        return aidlEnumVal2Uint32<KeyParameterValue::algorithm>(param.value);
+    case KM_TAG_BLOCK_MODE:
+        return aidlEnumVal2Uint32<KeyParameterValue::blockMode>(param.value);
+    case KM_TAG_DIGEST:
+    case KM_TAG_RSA_OAEP_MGF_DIGEST:
+        return aidlEnumVal2Uint32<KeyParameterValue::digest>(param.value);
+    case KM_TAG_PADDING:
+        return aidlEnumVal2Uint32<KeyParameterValue::paddingMode>(param.value);
+    case KM_TAG_EC_CURVE:
+        return aidlEnumVal2Uint32<KeyParameterValue::ecCurve>(param.value);
+    case KM_TAG_USER_AUTH_TYPE:
+        return aidlEnumVal2Uint32<KeyParameterValue::hardwareAuthenticatorType>(param.value);
+    case KM_TAG_ORIGIN:
+        return aidlEnumVal2Uint32<KeyParameterValue::origin>(param.value);
+    case KM_TAG_BLOB_USAGE_REQUIREMENTS:
+    case KM_TAG_KDF:
+    default:
+        CHECK(false) << "Unknown or unused enum tag: Something is broken";
+        return std::nullopt;
+    }
+}
+
+}  // namespace
+
+bool CborConverter::addAttestationKey(Array& array,
+                                      const std::optional<AttestationKey>& attestationKey) {
+    if (attestationKey.has_value()) {
+        array.add(Bstr(attestationKey->keyBlob));
+        addKeyparameters(array, attestationKey->attestKeyParams);
+        array.add(Bstr(attestationKey->issuerSubjectName));
+    } else {
+        array.add(std::move(Bstr(vector<uint8_t>(0))));
+        array.add(std::move(Map()));
+        array.add(std::move(Bstr(vector<uint8_t>(0))));
+    }
+    return true;
+}
+
+bool CborConverter::addKeyparameters(Array& array, const vector<KeyParameter>& keyParams) {
+    Map map;
+    std::map<uint64_t, vector<uint8_t>> enum_repetition;
+    std::map<uint64_t, Array> uint_repetition;
+    for (auto& param : keyParams) {
+        auto tag = legacy_enum_conversion(param.tag);
+        switch (typeFromTag(tag)) {
+        case KM_ENUM: {
+            auto paramEnum = aidlEnumParam2Uint32(param);
+            if (paramEnum.has_value()) {
+                map.add(static_cast<uint64_t>(tag), *paramEnum);
+            }
+            break;
+        }
+        case KM_UINT:
+            if (param.value.getTag() == KeyParameterValue::integer) {
+                auto intVal = param.value.get<KeyParameterValue::integer>();
+                map.add(static_cast<uint64_t>(tag), intVal);
+            }
+            break;
+        case KM_UINT_REP:
+            if (param.value.getTag() == KeyParameterValue::integer) {
+                auto intVal = param.value.get<KeyParameterValue::integer>();
+                uint_repetition[static_cast<uint64_t>(tag)].add(intVal);
+            }
+            break;
+        case KM_ENUM_REP: {
+            auto paramEnumRep = aidlEnumParam2Uint32(param);
+            if (paramEnumRep.has_value()) {
+                enum_repetition[static_cast<uint64_t>(tag)].push_back(*paramEnumRep);
+            }
+            break;
+        }
+        case KM_ULONG:
+            if (param.value.getTag() == KeyParameterValue::longInteger) {
+                auto longVal = param.value.get<KeyParameterValue::longInteger>();
+                map.add(static_cast<uint64_t>(tag), longVal);
+            }
+            break;
+        case KM_ULONG_REP:
+            if (param.value.getTag() == KeyParameterValue::longInteger) {
+                auto longVal = param.value.get<KeyParameterValue::longInteger>();
+                uint_repetition[static_cast<uint64_t>(tag & 0x00000000ffffffff)].add(longVal);
+            }
+            break;
+        case KM_DATE:
+            if (param.value.getTag() == KeyParameterValue::dateTime) {
+                auto dateVal = param.value.get<KeyParameterValue::dateTime>();
+                map.add(static_cast<uint64_t>(tag), dateVal);
+            }
+            break;
+        case KM_BOOL:
+            map.add(static_cast<uint64_t>(tag), 1 /* true */);
+            break;
+        case KM_BIGNUM:
+        case KM_BYTES:
+            if (param.value.getTag() == KeyParameterValue::blob) {
+                const auto& value = param.value.get<KeyParameterValue::blob>();
+                map.add(static_cast<uint64_t>(tag & 0x00000000ffffffff), value);
+            }
+            break;
+        case KM_INVALID:
+            break;
+        }
+    }
+
+    for (auto const& [key, val] : enum_repetition) {
+        Bstr bstr(val);
+        map.add(key, std::move(bstr));
+    }
+
+    for (auto& [key, val] : uint_repetition) {
+        map.add(key, std::move(val));
+    }
+    array.add(std::move(map));
+    return true;
+}
+
+// Array of three maps
+std::optional<vector<KeyCharacteristics>>
+CborConverter::getKeyCharacteristics(const unique_ptr<Item>& item, const uint32_t pos) {
+    vector<KeyCharacteristics> keyCharacteristics;
+    auto arrayItem = getItemAtPos(item, pos);
+    if (!arrayItem || (MajorType::ARRAY != getType(arrayItem.value()))) {
+        return std::nullopt;
+    }
+    KeyCharacteristics swEnf{SecurityLevel::KEYSTORE, {}};
+    KeyCharacteristics teeEnf{SecurityLevel::TRUSTED_ENVIRONMENT, {}};
+    KeyCharacteristics sbEnf{SecurityLevel::STRONGBOX, {}};
+
+    auto optSbEnf = getKeyParameters(arrayItem.value(), SB_ENFORCED);
+    if (!optSbEnf) {
+        return std::nullopt;
+    }
+    sbEnf.authorizations = std::move(optSbEnf.value());
+    auto optTeeEnf = getKeyParameters(arrayItem.value(), TEE_ENFORCED);
+    if (!optTeeEnf) {
+        return std::nullopt;
+    }
+    teeEnf.authorizations = std::move(optTeeEnf.value());
+    auto optSwEnf = getKeyParameters(arrayItem.value(), SW_ENFORCED);
+    if (!optSwEnf) {
+        return std::nullopt;
+    }
+    swEnf.authorizations = std::move(optSwEnf.value());
+    // VTS will fail if the authorizations list is empty.
+    if (!sbEnf.authorizations.empty()) keyCharacteristics.push_back(std::move(sbEnf));
+    if (!teeEnf.authorizations.empty()) keyCharacteristics.push_back(std::move(teeEnf));
+    if (!swEnf.authorizations.empty()) keyCharacteristics.push_back(std::move(swEnf));
+    return keyCharacteristics;
+}
+
+std::optional<std::vector<KeyParameter>> CborConverter::getKeyParameter(
+    const std::pair<const std::unique_ptr<Item>&, const std::unique_ptr<Item>&> pair) {
+    std::vector<KeyParameter> keyParams;
+    keymaster_tag_t key;
+    auto optValue = getUint64(pair.first);
+    if (!optValue) {
+        return std::nullopt;
+    }
+    key = static_cast<keymaster_tag_t>(optValue.value());
+    switch (keymaster_tag_get_type(key)) {
+    case KM_ENUM_REP: {
+        /* ENUM_REP contains values encoded in a Byte string */
+        const Bstr* bstr = pair.second.get()->asBstr();
+        if (bstr == nullptr) {
+            return std::nullopt;
+        }
+        for (auto bchar : bstr->value()) {
+            keymaster_key_param_t keyParam;
+            keyParam.tag = key;
+            keyParam.enumerated = bchar;
+            keyParams.push_back(kmParam2Aidl(keyParam));
+        }
+        return keyParams;
+    }
+    case KM_ENUM: {
+        keymaster_key_param_t keyParam;
+        keyParam.tag = key;
+        if (!(optValue = getUint64(pair.second))) {
+            return std::nullopt;
+        }
+        keyParam.enumerated = static_cast<uint32_t>(optValue.value());
+        keyParams.push_back(kmParam2Aidl(keyParam));
+        return keyParams;
+    }
+    case KM_UINT: {
+        keymaster_key_param_t keyParam;
+        keyParam.tag = key;
+        if (!(optValue = getUint64(pair.second))) {
+            return std::nullopt;
+        }
+        keyParam.integer = static_cast<uint32_t>(optValue.value());
+        keyParams.push_back(kmParam2Aidl(keyParam));
+        return keyParams;
+    }
+    case KM_ULONG: {
+        keymaster_key_param_t keyParam;
+        keyParam.tag = key;
+        if (!(optValue = getUint64(pair.second))) {
+            return std::nullopt;
+        }
+        keyParam.long_integer = optValue.value();
+        keyParams.push_back(kmParam2Aidl(keyParam));
+        return keyParams;
+    }
+    case KM_UINT_REP: {
+        /* UINT_REP contains values encoded in a Array */
+        Array* array = const_cast<Array*>(pair.second.get()->asArray());
+        if (array == nullptr) return std::nullopt;
+        for (int i = 0; i < array->size(); i++) {
+            keymaster_key_param_t keyParam;
+            keyParam.tag = key;
+            const std::unique_ptr<Item>& item = array->get(i);
+            if (!(optValue = getUint64(item))) {
+                return std::nullopt;
+            }
+            keyParam.integer = static_cast<uint32_t>(optValue.value());
+            keyParams.push_back(kmParam2Aidl(keyParam));
+        }
+        return keyParams;
+    }
+    case KM_ULONG_REP: {
+        /* ULONG_REP contains values encoded in a Array */
+        Array* array = const_cast<Array*>(pair.second.get()->asArray());
+        if (array == nullptr) return std::nullopt;
+        for (int i = 0; i < array->size(); i++) {
+            keymaster_key_param_t keyParam;
+            keyParam.tag = key;
+            const std::unique_ptr<Item>& item = array->get(i);
+            if (!(optValue = getUint64(item))) {
+                return std::nullopt;
+            }
+            keyParam.long_integer = optValue.value();
+            keyParams.push_back(kmParam2Aidl(keyParam));
+        }
+        return keyParams;
+    }
+    case KM_DATE: {
+        keymaster_key_param_t keyParam;
+        keyParam.tag = key;
+        if (!(optValue = getUint64(pair.second))) {
+            return std::nullopt;
+        }
+        keyParam.date_time = optValue.value();
+        keyParams.push_back(kmParam2Aidl(keyParam));
+        return keyParams;
+    }
+    case KM_BOOL: {
+        keymaster_key_param_t keyParam;
+        keyParam.tag = key;
+        if (!(optValue = getUint64(pair.second))) {
+            return std::nullopt;
+        }
+        // If a tag with this type is present, the value is true.  If absent, false.
+        keyParam.boolean = true;
+        keyParams.push_back(kmParam2Aidl(keyParam));
+        return keyParams;
+    }
+    case KM_BIGNUM:
+    case KM_BYTES: {
+        keymaster_key_param_t keyParam;
+        keyParam.tag = key;
+        const Bstr* bstr = pair.second.get()->asBstr();
+        if (bstr == nullptr) return std::nullopt;
+        keyParam.blob.data = bstr->value().data();
+        keyParam.blob.data_length = bstr->value().size();
+        keyParams.push_back(kmParam2Aidl(keyParam));
+        return keyParams;
+    }
+    case KM_INVALID:
+        break;
+    }
+    return std::nullopt;
+}
+
+// array of a blobs
+std::optional<vector<Certificate>>
+CborConverter::getCertificateChain(const std::unique_ptr<Item>& item, const uint32_t pos) {
+    vector<Certificate> certChain;
+    auto arrayItem = getItemAtPos(item, pos);
+    if (!arrayItem || (MajorType::ARRAY != getType(arrayItem.value()))) return std::nullopt;
+
+    const Array* arr = arrayItem.value().get()->asArray();
+    for (int i = 0; i < arr->size(); i++) {
+        Certificate cert;
+        auto optTemp = getByteArrayVec(arrayItem.value(), i);
+        if (!optTemp) return std::nullopt;
+        cert.encodedCertificate = std::move(optTemp.value());
+        certChain.push_back(std::move(cert));
+    }
+    return certChain;
+}
+
+std::optional<string> CborConverter::getTextStr(const unique_ptr<Item>& item, const uint32_t pos) {
+    auto textStrItem = getItemAtPos(item, pos);
+    if (!textStrItem || (MajorType::TSTR != getType(textStrItem.value()))) {
+        return std::nullopt;
+    }
+    const Tstr* tstr = textStrItem.value().get()->asTstr();
+    return tstr->value();
+}
+
+std::optional<string> CborConverter::getByteArrayStr(const unique_ptr<Item>& item,
+                                                     const uint32_t pos) {
+    auto optTemp = getByteArrayVec(item, pos);
+    if (!optTemp) {
+        return std::nullopt;
+    }
+    std::string str(optTemp->begin(), optTemp->end());
+    return str;
+}
+
+std::optional<std::vector<uint8_t>> CborConverter::getByteArrayVec(const unique_ptr<Item>& item,
+                                                                   const uint32_t pos) {
+    auto strItem = getItemAtPos(item, pos);
+    if (!strItem || (MajorType::BSTR != getType(strItem.value()))) {
+        return std::nullopt;
+    }
+    const Bstr* bstr = strItem.value().get()->asBstr();
+    return bstr->value();
+}
+
+std::optional<SharedSecretParameters>
+CborConverter::getSharedSecretParameters(const unique_ptr<Item>& item, const uint32_t pos) {
+    SharedSecretParameters params;
+    // Array [seed, nonce]
+    auto arrayItem = getItemAtPos(item, pos);
+    if (!arrayItem || (MajorType::ARRAY != getType(arrayItem.value()))) {
+        return std::nullopt;
+    }
+    auto optSeed = getByteArrayVec(arrayItem.value(), 0);
+    auto optNonce = getByteArrayVec(arrayItem.value(), 1);
+    if (!optSeed || !optNonce) {
+        return std::nullopt;
+    }
+    params.seed = std::move(optSeed.value());
+    params.nonce = std::move(optNonce.value());
+    return params;
+}
+
+bool CborConverter::addSharedSecretParameters(Array& array,
+                                              const vector<SharedSecretParameters>& params) {
+    Array cborParamsVec;
+    for (auto param : params) {
+        Array cborParam;
+        cborParam.add(Bstr(param.seed));
+        cborParam.add(Bstr(param.nonce));
+        cborParamsVec.add(std::move(cborParam));
+    }
+    array.add(std::move(cborParamsVec));
+    return true;
+}
+
+bool CborConverter::addTimeStampToken(Array& array, const TimeStampToken& token) {
+    Array vToken;
+    vToken.add(static_cast<uint64_t>(token.challenge));
+    vToken.add(static_cast<uint64_t>(token.timestamp.milliSeconds));
+    vToken.add((std::vector<uint8_t>(token.mac)));
+    array.add(std::move(vToken));
+    return true;
+}
+
+bool CborConverter::addHardwareAuthToken(Array& array, const HardwareAuthToken& authToken) {
+
+    Array hwAuthToken;
+    hwAuthToken.add(static_cast<uint64_t>(authToken.challenge));
+    hwAuthToken.add(static_cast<uint64_t>(authToken.userId));
+    hwAuthToken.add(static_cast<uint64_t>(authToken.authenticatorId));
+    hwAuthToken.add(static_cast<uint64_t>(authToken.authenticatorType));
+    hwAuthToken.add(static_cast<uint64_t>(authToken.timestamp.milliSeconds));
+    hwAuthToken.add((std::vector<uint8_t>(authToken.mac)));
+    array.add(std::move(hwAuthToken));
+    return true;
+}
+
+std::optional<TimeStampToken> CborConverter::getTimeStampToken(const unique_ptr<Item>& item,
+                                                               const uint32_t pos) {
+    TimeStampToken token;
+    // {challenge, timestamp, Mac}
+    auto optChallenge = getUint64(item, pos);
+    auto optTimestampMillis = getUint64(item, pos + 1);
+    auto optTemp = getByteArrayVec(item, pos + 2);
+    if (!optChallenge || !optTimestampMillis || !optTemp) {
+        return std::nullopt;
+    }
+    token.mac = std::move(optTemp.value());
+    token.challenge = static_cast<long>(std::move(optChallenge.value()));
+    token.timestamp.milliSeconds = static_cast<long>(std::move(optTimestampMillis.value()));
+    return token;
+}
+
+std::optional<Array> CborConverter::getArrayItem(const std::unique_ptr<Item>& item,
+                                                 const uint32_t pos) {
+    Array array;
+    auto arrayItem = getItemAtPos(item, pos);
+    if (!arrayItem || (MajorType::ARRAY != getType(arrayItem.value()))) {
+        return std::nullopt;
+    }
+    array = std::move(*(arrayItem.value().get()->asArray()));
+    return array;
+}
+
+std::optional<Map> CborConverter::getMapItem(const std::unique_ptr<Item>& item,
+                                             const uint32_t pos) {
+    Map map;
+    auto mapItem = getItemAtPos(item, pos);
+    if (!mapItem || (MajorType::MAP != getType(mapItem.value()))) {
+        return std::nullopt;
+    }
+    map = std::move(*(mapItem.value().get()->asMap()));
+    return map;
+}
+
+std::optional<vector<KeyParameter>> CborConverter::getKeyParameters(const unique_ptr<Item>& item,
+                                                                    const uint32_t pos) {
+    vector<KeyParameter> params;
+    auto mapItem = getItemAtPos(item, pos);
+    if (!mapItem || (MajorType::MAP != getType(mapItem.value()))) return std::nullopt;
+    const Map* map = mapItem.value().get()->asMap();
+    size_t mapSize = map->size();
+    for (int i = 0; i < mapSize; i++) {
+        auto optKeyParams = getKeyParameter((*map)[i]);
+        if (optKeyParams) {
+            params.insert(params.end(), optKeyParams->begin(), optKeyParams->end());
+        } else {
+            return std::nullopt;
+        }
+    }
+    return params;
+}
+
+std::tuple<std::unique_ptr<Item>, keymaster_error_t>
+CborConverter::decodeData(const std::vector<uint8_t>& response) {
+    auto [item, pos, message] = cppbor::parse(response);
+    if (!item || MajorType::ARRAY != getType(item)) {
+        return {nullptr, KM_ERROR_UNKNOWN_ERROR};
+    }
+    auto optErrorCode = getErrorCode(item, 0);
+    if (!optErrorCode) {
+        return {nullptr, KM_ERROR_UNKNOWN_ERROR};
+    }
+    return {std::move(item), optErrorCode.value()};
+}
+
+std::optional<keymaster_error_t>
+CborConverter::getErrorCode(const std::unique_ptr<cppbor::Item>& item, const uint32_t pos) {
+    auto optErrorVal = getUint64(item, pos);
+    if (!optErrorVal) {
+        return std::nullopt;
+    }
+    return static_cast<keymaster_error_t>(0 - optErrorVal.value());
+}
+
+std::optional<uint64_t> CborConverter::getUint64(const unique_ptr<Item>& item) {
+    if ((item == nullptr) || (MajorType::UINT != getType(item))) {
+        return std::nullopt;
+    }
+    const Uint* uintVal = item.get()->asUint();
+    return uintVal->unsignedValue();
+}
+
+std::optional<uint64_t> CborConverter::getUint64(const unique_ptr<Item>& item, const uint32_t pos) {
+    auto intItem = getItemAtPos(item, pos);
+    if (!intItem) {
+        return std::nullopt;
+    }
+    return getUint64(intItem.value());
+}
+
+}  // namespace keymint::javacard
diff --git a/ready_se/google/keymint/KM300/HAL/CborConverter.h b/ready_se/google/keymint/KM300/HAL/CborConverter.h
new file mode 100644
index 0000000..d594350
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/CborConverter.h
@@ -0,0 +1,142 @@
+/*
+ **
+ ** Copyright 2020, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+#pragma once
+
+#include <iostream>
+#include <memory>
+#include <numeric>
+#include <vector>
+
+#include <cppbor.h>
+#include <cppbor_parse.h>
+
+#include <aidl/android/hardware/security/keymint/Certificate.h>
+#include <aidl/android/hardware/security/keymint/IKeyMintDevice.h>
+#include <aidl/android/hardware/security/secureclock/TimeStampToken.h>
+#include <aidl/android/hardware/security/sharedsecret/ISharedSecret.h>
+
+#include <keymaster/android_keymaster_messages.h>
+
+namespace keymint::javacard {
+using aidl::android::hardware::security::keymint::AttestationKey;
+using aidl::android::hardware::security::keymint::Certificate;
+using aidl::android::hardware::security::keymint::HardwareAuthToken;
+using aidl::android::hardware::security::keymint::KeyCharacteristics;
+using aidl::android::hardware::security::keymint::KeyParameter;
+using aidl::android::hardware::security::secureclock::TimeStampToken;
+using aidl::android::hardware::security::sharedsecret::SharedSecretParameters;
+using cppbor::Array;
+using cppbor::Bstr;
+using cppbor::EncodedItem;
+using cppbor::Item;
+using cppbor::MajorType;
+using cppbor::Map;
+using cppbor::Nint;
+using cppbor::Tstr;
+using cppbor::Uint;
+using std::string;
+using std::unique_ptr;
+using std::vector;
+
+class CborConverter {
+  public:
+    CborConverter() = default;
+
+    ~CborConverter() = default;
+
+    std::tuple<std::unique_ptr<Item>, keymaster_error_t>
+    decodeData(const std::vector<uint8_t>& response);
+
+    std::optional<uint64_t> getUint64(const unique_ptr<Item>& item);
+
+    std::optional<uint64_t> getUint64(const unique_ptr<Item>& item, const uint32_t pos);
+
+    std::optional<SharedSecretParameters>
+    getSharedSecretParameters(const std::unique_ptr<Item>& item, const uint32_t pos);
+
+    std::optional<string> getByteArrayStr(const unique_ptr<Item>& item, const uint32_t pos);
+
+    std::optional<string> getTextStr(const unique_ptr<Item>& item, const uint32_t pos);
+
+    std::optional<std::vector<uint8_t>> getByteArrayVec(const unique_ptr<Item>& item,
+                                                        const uint32_t pos);
+
+    std::optional<vector<KeyParameter>> getKeyParameters(const unique_ptr<Item>& item,
+                                                         const uint32_t pos);
+
+    bool addKeyparameters(Array& array, const vector<KeyParameter>& keyParams);
+
+    bool addAttestationKey(Array& array, const std::optional<AttestationKey>& attestationKey);
+
+    bool addHardwareAuthToken(Array& array, const HardwareAuthToken& authToken);
+
+    bool addSharedSecretParameters(Array& array, const vector<SharedSecretParameters>& params);
+
+    std::optional<TimeStampToken> getTimeStampToken(const std::unique_ptr<Item>& item,
+                                                    const uint32_t pos);
+
+    std::optional<vector<KeyCharacteristics>>
+    getKeyCharacteristics(const std::unique_ptr<Item>& item, const uint32_t pos);
+
+    std::optional<vector<Certificate>> getCertificateChain(const std::unique_ptr<Item>& item,
+                                                           const uint32_t pos);
+
+    std::optional<vector<vector<uint8_t>>> getMultiByteArray(const unique_ptr<Item>& item,
+                                                             const uint32_t pos);
+
+    bool addTimeStampToken(Array& array, const TimeStampToken& token);
+
+    std::optional<Map> getMapItem(const std::unique_ptr<Item>& item, const uint32_t pos);
+
+    std::optional<Array> getArrayItem(const std::unique_ptr<Item>& item, const uint32_t pos);
+
+    std::optional<keymaster_error_t> getErrorCode(const std::unique_ptr<Item>& item,
+                                                  const uint32_t pos);
+
+  private:
+    /**
+     * Get the type of the Item pointer.
+     */
+    inline MajorType getType(const unique_ptr<Item>& item) { return item.get()->type(); }
+
+    /**
+     * Construct Keyparameter structure from the pair of key and value. If TagType is  ENUM_REP the
+     * value contains binary string. If TagType is UINT_REP or ULONG_REP the value contains Array of
+     * unsigned integers.
+     */
+    std::optional<std::vector<KeyParameter>> getKeyParameter(
+        const std::pair<const std::unique_ptr<Item>&, const std::unique_ptr<Item>&> pair);
+
+    /**
+     * Get the sub item pointer from the root item pointer at the given position.
+     */
+    inline std::optional<unique_ptr<Item>> getItemAtPos(const unique_ptr<Item>& item,
+                                                        const uint32_t pos) {
+        Array* arr = nullptr;
+
+        if (MajorType::ARRAY != getType(item)) {
+            return std::nullopt;
+        }
+        arr = const_cast<Array*>(item.get()->asArray());
+        if (arr->size() < (pos + 1)) {
+            return std::nullopt;
+        }
+        return std::move((*arr)[pos]);
+    }
+};
+
+}  // namespace keymint::javacard
diff --git a/ready_se/google/keymint/KM300/HAL/JavacardKeyMintDevice.cpp b/ready_se/google/keymint/KM300/HAL/JavacardKeyMintDevice.cpp
new file mode 100644
index 0000000..bd68b48
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/JavacardKeyMintDevice.cpp
@@ -0,0 +1,454 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "javacard.keymint.device.strongbox-impl"
+
+#include "JavacardKeyMintDevice.h"
+
+#include <regex.h>
+
+#include <algorithm>
+#include <iostream>
+#include <iterator>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <KeyMintUtils.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <hardware/hw_auth_token.h>
+#include <keymaster/android_keymaster_messages.h>
+#include <keymaster/wrapped_key.h>
+
+#include "JavacardKeyMintOperation.h"
+#include "JavacardSharedSecret.h"
+
+namespace aidl::android::hardware::security::keymint {
+using cppbor::Bstr;
+using cppbor::EncodedItem;
+using cppbor::Uint;
+using ::keymaster::AuthorizationSet;
+using ::keymaster::dup_buffer;
+using ::keymaster::KeymasterBlob;
+using ::keymaster::KeymasterKeyBlob;
+using ::keymint::javacard::Instruction;
+using std::string;
+
+ScopedAStatus JavacardKeyMintDevice::defaultHwInfo(KeyMintHardwareInfo* info) {
+    info->versionNumber = 2;
+    info->keyMintAuthorName = "Google";
+    info->keyMintName = "JavacardKeymintDevice";
+    info->securityLevel = securitylevel_;
+    info->timestampTokenRequired = true;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintDevice::getHardwareInfo(KeyMintHardwareInfo* info) {
+    auto [item, err] = card_->sendRequest(Instruction::INS_GET_HW_INFO_CMD);
+    std::optional<string> optKeyMintName;
+    std::optional<string> optKeyMintAuthorName;
+    std::optional<uint64_t> optSecLevel;
+    std::optional<uint64_t> optVersion;
+    std::optional<uint64_t> optTsRequired;
+    if (err != KM_ERROR_OK || !(optVersion = cbor_.getUint64(item, 1)) ||
+        !(optSecLevel = cbor_.getUint64(item, 2)) ||
+        !(optKeyMintName = cbor_.getByteArrayStr(item, 3)) ||
+        !(optKeyMintAuthorName = cbor_.getByteArrayStr(item, 4)) ||
+        !(optTsRequired = cbor_.getUint64(item, 5))) {
+        LOG(ERROR) << "Error in response of getHardwareInfo.";
+        LOG(INFO) << "Returning defaultHwInfo in getHardwareInfo.";
+        return defaultHwInfo(info);
+    }
+    card_->initializeJavacard();
+    info->keyMintName = std::move(optKeyMintName.value());
+    info->keyMintAuthorName = std::move(optKeyMintAuthorName.value());
+    info->timestampTokenRequired = (optTsRequired.value() == 1);
+    info->securityLevel = static_cast<SecurityLevel>(std::move(optSecLevel.value()));
+    info->versionNumber = static_cast<int32_t>(std::move(optVersion.value()));
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintDevice::generateKey(const vector<KeyParameter>& keyParams,
+                                                 const optional<AttestationKey>& attestationKey,
+                                                 KeyCreationResult* creationResult) {
+    cppbor::Array array;
+    // add key params
+    cbor_.addKeyparameters(array, keyParams);
+    // add attestation key if any
+    cbor_.addAttestationKey(array, attestationKey);
+    auto [item, err] = card_->sendRequest(Instruction::INS_GENERATE_KEY_CMD, array);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending generateKey.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    auto optKeyBlob = cbor_.getByteArrayVec(item, 1);
+    auto optKeyChars = cbor_.getKeyCharacteristics(item, 2);
+    auto optCertChain = cbor_.getCertificateChain(item, 3);
+    if (!optKeyBlob || !optKeyChars || !optCertChain) {
+        LOG(ERROR) << "Error in decoding og response in generateKey.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    creationResult->keyCharacteristics = std::move(optKeyChars.value());
+    creationResult->certificateChain = std::move(optCertChain.value());
+    creationResult->keyBlob = std::move(optKeyBlob.value());
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintDevice::addRngEntropy(const vector<uint8_t>& data) {
+    cppbor::Array request;
+    // add key data
+    request.add(Bstr(data));
+    auto [item, err] = card_->sendRequest(Instruction::INS_ADD_RNG_ENTROPY_CMD, request);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending addRngEntropy.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintDevice::importKey(const vector<KeyParameter>& keyParams,
+                                               KeyFormat keyFormat, const vector<uint8_t>& keyData,
+                                               const optional<AttestationKey>& attestationKey,
+                                               KeyCreationResult* creationResult) {
+
+    cppbor::Array request;
+    // add key params
+    cbor_.addKeyparameters(request, keyParams);
+    // add key format
+    request.add(Uint(static_cast<uint8_t>(keyFormat)));
+    // add key data
+    request.add(Bstr(keyData));
+    // add attestation key if any
+    cbor_.addAttestationKey(request, attestationKey);
+
+    auto [item, err] = card_->sendRequest(Instruction::INS_IMPORT_KEY_CMD, request);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending data in importKey.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    auto optKeyBlob = cbor_.getByteArrayVec(item, 1);
+    auto optKeyChars = cbor_.getKeyCharacteristics(item, 2);
+    auto optCertChain = cbor_.getCertificateChain(item, 3);
+    if (!optKeyBlob || !optKeyChars || !optCertChain) {
+        LOG(ERROR) << "Error in decoding response in importKey.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    creationResult->keyCharacteristics = std::move(optKeyChars.value());
+    creationResult->certificateChain = std::move(optCertChain.value());
+    creationResult->keyBlob = std::move(optKeyBlob.value());
+    return ScopedAStatus::ok();
+}
+
+// import wrapped key is divided into 2 stage operation.
+ScopedAStatus JavacardKeyMintDevice::importWrappedKey(const vector<uint8_t>& wrappedKeyData,
+                                                      const vector<uint8_t>& wrappingKeyBlob,
+                                                      const vector<uint8_t>& maskingKey,
+                                                      const vector<KeyParameter>& unwrappingParams,
+                                                      int64_t passwordSid, int64_t biometricSid,
+                                                      KeyCreationResult* creationResult) {
+    cppbor::Array request;
+    std::unique_ptr<Item> item;
+    vector<uint8_t> keyBlob;
+    std::vector<uint8_t> response;
+    vector<KeyCharacteristics> keyCharacteristics;
+    std::vector<uint8_t> iv;
+    std::vector<uint8_t> transitKey;
+    std::vector<uint8_t> secureKey;
+    std::vector<uint8_t> tag;
+    vector<KeyParameter> authList;
+    KeyFormat keyFormat;
+    std::vector<uint8_t> wrappedKeyDescription;
+    keymaster_error_t errorCode = parseWrappedKey(wrappedKeyData, iv, transitKey, secureKey, tag,
+                                                  authList, keyFormat, wrappedKeyDescription);
+    if (errorCode != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in parse wrapped key in importWrappedKey.";
+        return km_utils::kmError2ScopedAStatus(errorCode);
+    }
+
+    // begin import
+    std::tie(item, errorCode) =
+        sendBeginImportWrappedKeyCmd(transitKey, wrappingKeyBlob, maskingKey, unwrappingParams);
+    if (errorCode != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in send begin import wrapped key in importWrappedKey.";
+        return km_utils::kmError2ScopedAStatus(errorCode);
+    }
+    // Finish the import
+    std::tie(item, errorCode) = sendFinishImportWrappedKeyCmd(
+        authList, keyFormat, secureKey, tag, iv, wrappedKeyDescription, passwordSid, biometricSid);
+    if (errorCode != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in send finish import wrapped key in importWrappedKey.";
+        return km_utils::kmError2ScopedAStatus(errorCode);
+    }
+    auto optKeyBlob = cbor_.getByteArrayVec(item, 1);
+    auto optKeyChars = cbor_.getKeyCharacteristics(item, 2);
+    auto optCertChain = cbor_.getCertificateChain(item, 3);
+    if (!optKeyBlob || !optKeyChars || !optCertChain) {
+        LOG(ERROR) << "Error in decoding the response in importWrappedKey.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    creationResult->keyCharacteristics = std::move(optKeyChars.value());
+    creationResult->certificateChain = std::move(optCertChain.value());
+    creationResult->keyBlob = std::move(optKeyBlob.value());
+    return ScopedAStatus::ok();
+}
+
+std::tuple<std::unique_ptr<Item>, keymaster_error_t>
+JavacardKeyMintDevice::sendBeginImportWrappedKeyCmd(const std::vector<uint8_t>& transitKey,
+                                                    const std::vector<uint8_t>& wrappingKeyBlob,
+                                                    const std::vector<uint8_t>& maskingKey,
+                                                    const vector<KeyParameter>& unwrappingParams) {
+    Array request;
+    request.add(std::vector<uint8_t>(transitKey));
+    request.add(std::vector<uint8_t>(wrappingKeyBlob));
+    request.add(std::vector<uint8_t>(maskingKey));
+    cbor_.addKeyparameters(request, unwrappingParams);
+    return card_->sendRequest(Instruction::INS_BEGIN_IMPORT_WRAPPED_KEY_CMD, request);
+}
+
+std::tuple<std::unique_ptr<Item>, keymaster_error_t>
+JavacardKeyMintDevice::sendFinishImportWrappedKeyCmd(
+    const vector<KeyParameter>& keyParams, KeyFormat keyFormat,
+    const std::vector<uint8_t>& secureKey, const std::vector<uint8_t>& tag,
+    const std::vector<uint8_t>& iv, const std::vector<uint8_t>& wrappedKeyDescription,
+    int64_t passwordSid, int64_t biometricSid) {
+    Array request;
+    cbor_.addKeyparameters(request, keyParams);
+    request.add(static_cast<uint64_t>(keyFormat));
+    request.add(std::vector<uint8_t>(secureKey));
+    request.add(std::vector<uint8_t>(tag));
+    request.add(std::vector<uint8_t>(iv));
+    request.add(std::vector<uint8_t>(wrappedKeyDescription));
+    request.add(Uint(passwordSid));
+    request.add(Uint(biometricSid));
+    return card_->sendRequest(Instruction::INS_FINISH_IMPORT_WRAPPED_KEY_CMD, request);
+}
+
+ScopedAStatus JavacardKeyMintDevice::upgradeKey(const vector<uint8_t>& keyBlobToUpgrade,
+                                                const vector<KeyParameter>& upgradeParams,
+                                                vector<uint8_t>* keyBlob) {
+    cppbor::Array request;
+    // add key blob
+    request.add(Bstr(keyBlobToUpgrade));
+    // add key params
+    cbor_.addKeyparameters(request, upgradeParams);
+    auto [item, err] = card_->sendRequest(Instruction::INS_UPGRADE_KEY_CMD, request);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending in upgradeKey.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    auto optKeyBlob = cbor_.getByteArrayVec(item, 1);
+    if (!optKeyBlob) {
+        LOG(ERROR) << "Error in decoding the response in upgradeKey.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    *keyBlob = std::move(optKeyBlob.value());
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintDevice::deleteKey(const vector<uint8_t>& keyBlob) {
+    Array request;
+    request.add(Bstr(keyBlob));
+    auto [item, err] = card_->sendRequest(Instruction::INS_DELETE_KEY_CMD, request);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending in deleteKey.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintDevice::deleteAllKeys() {
+    auto [item, err] = card_->sendRequest(Instruction::INS_DELETE_ALL_KEYS_CMD);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending in deleteAllKeys.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintDevice::destroyAttestationIds() {
+    auto [item, err] = card_->sendRequest(Instruction::INS_DESTROY_ATT_IDS_CMD);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending in destroyAttestationIds.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintDevice::begin(KeyPurpose purpose, const std::vector<uint8_t>& keyBlob,
+                                           const std::vector<KeyParameter>& params,
+                                           const std::optional<HardwareAuthToken>& authToken,
+                                           BeginResult* result) {
+
+    cppbor::Array array;
+    std::vector<uint8_t> response;
+    // make request
+    array.add(Uint(static_cast<uint64_t>(purpose)));
+    array.add(Bstr(keyBlob));
+    cbor_.addKeyparameters(array, params);
+    HardwareAuthToken token = authToken.value_or(HardwareAuthToken());
+    cbor_.addHardwareAuthToken(array, token);
+
+    // Send earlyBootEnded if there is any pending earlybootEnded event.
+    auto retErr = card_->sendEarlyBootEndedEvent(false);
+    if (retErr != KM_ERROR_OK) {
+        return km_utils::kmError2ScopedAStatus(retErr);
+        ;
+    }
+
+    auto [item, err] = card_->sendRequest(Instruction::INS_BEGIN_OPERATION_CMD, array);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending in begin.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    // return the result
+    auto keyParams = cbor_.getKeyParameters(item, 1);
+    auto optOpHandle = cbor_.getUint64(item, 2);
+    auto optBufMode = cbor_.getUint64(item, 3);
+    auto optMacLength = cbor_.getUint64(item, 4);
+
+    if (!keyParams || !optOpHandle || !optBufMode || !optMacLength) {
+        LOG(ERROR) << "Error in decoding the response in begin.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    result->params = std::move(keyParams.value());
+    result->challenge = optOpHandle.value();
+    result->operation = ndk::SharedRefBase::make<JavacardKeyMintOperation>(
+        static_cast<keymaster_operation_handle_t>(optOpHandle.value()),
+        static_cast<BufferingMode>(optBufMode.value()), optMacLength.value(), card_);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus
+JavacardKeyMintDevice::deviceLocked(bool passwordOnly,
+                                    const std::optional<TimeStampToken>& timestampToken) {
+    Array request;
+    int8_t password = 1;
+    if (!passwordOnly) {
+        password = 0;
+    }
+    request.add(Uint(password));
+    cbor_.addTimeStampToken(request, timestampToken.value_or(TimeStampToken()));
+    auto [item, err] = card_->sendRequest(Instruction::INS_DEVICE_LOCKED_CMD, request);
+    if (err != KM_ERROR_OK) {
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintDevice::earlyBootEnded() {
+    auto err = card_->sendEarlyBootEndedEvent(true);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending earlyBootEndedEvent.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintDevice::getKeyCharacteristics(
+    const std::vector<uint8_t>& keyBlob, const std::vector<uint8_t>& appId,
+    const std::vector<uint8_t>& appData, std::vector<KeyCharacteristics>* result) {
+    cppbor::Array request;
+    request.add(vector<uint8_t>(keyBlob));
+    request.add(vector<uint8_t>(appId));
+    request.add(vector<uint8_t>(appData));
+    auto [item, err] = card_->sendRequest(Instruction::INS_GET_KEY_CHARACTERISTICS_CMD, request);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending in getKeyCharacteristics.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    auto optKeyChars = cbor_.getKeyCharacteristics(item, 1);
+    if (!optKeyChars) {
+        LOG(ERROR) << "Error in sending in upgradeKey.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    *result = std::move(optKeyChars.value());
+    return ScopedAStatus::ok();
+}
+
+keymaster_error_t
+JavacardKeyMintDevice::parseWrappedKey(const vector<uint8_t>& wrappedKeyData,
+                                       std::vector<uint8_t>& iv, std::vector<uint8_t>& transitKey,
+                                       std::vector<uint8_t>& secureKey, std::vector<uint8_t>& tag,
+                                       vector<KeyParameter>& authList, KeyFormat& keyFormat,
+                                       std::vector<uint8_t>& wrappedKeyDescription) {
+    KeymasterBlob kmIv;
+    KeymasterKeyBlob kmTransitKey;
+    KeymasterKeyBlob kmSecureKey;
+    KeymasterBlob kmTag;
+    AuthorizationSet authSet;
+    keymaster_key_format_t kmKeyFormat;
+    KeymasterBlob kmWrappedKeyDescription;
+
+    size_t keyDataLen = wrappedKeyData.size();
+    uint8_t* keyData = dup_buffer(wrappedKeyData.data(), keyDataLen);
+    keymaster_key_blob_t keyMaterial = {keyData, keyDataLen};
+    keymaster_error_t error =
+        parse_wrapped_key(KeymasterKeyBlob(keyMaterial), &kmIv, &kmTransitKey, &kmSecureKey, &kmTag,
+                          &authSet, &kmKeyFormat, &kmWrappedKeyDescription);
+    if (error != KM_ERROR_OK) {
+        LOG(ERROR) << "Error parsing wrapped key.";
+        return error;
+    }
+    iv = km_utils::kmBlob2vector(kmIv);
+    transitKey = km_utils::kmBlob2vector(kmTransitKey);
+    secureKey = km_utils::kmBlob2vector(kmSecureKey);
+    tag = km_utils::kmBlob2vector(kmTag);
+    authList = km_utils::kmParamSet2Aidl(authSet);
+    keyFormat = static_cast<KeyFormat>(kmKeyFormat);
+    wrappedKeyDescription = km_utils::kmBlob2vector(kmWrappedKeyDescription);
+    return KM_ERROR_OK;
+}
+
+ScopedAStatus JavacardKeyMintDevice::convertStorageKeyToEphemeral(
+    const std::vector<uint8_t>& /* storageKeyBlob */,
+    std::vector<uint8_t>* /* ephemeralKeyBlob */) {
+    return km_utils::kmError2ScopedAStatus(KM_ERROR_UNIMPLEMENTED);
+}
+
+ScopedAStatus JavacardKeyMintDevice::getRootOfTrustChallenge(array<uint8_t, 16>* challenge) {
+    auto [item, err] = card_->sendRequest(Instruction::INS_GET_ROT_CHALLENGE_CMD);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending in getRootOfTrustChallenge.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    auto optChallenge = cbor_.getByteArrayVec(item, 1);
+    if (!optChallenge) {
+        LOG(ERROR) << "Error in sending in upgradeKey.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    std::move(optChallenge->begin(), optChallenge->begin() + 16, challenge->begin());
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintDevice::getRootOfTrust(const array<uint8_t, 16>& /*challenge*/,
+                                                    vector<uint8_t>* /*rootOfTrust*/) {
+    return km_utils::kmError2ScopedAStatus(KM_ERROR_UNIMPLEMENTED);
+}
+
+ScopedAStatus JavacardKeyMintDevice::sendRootOfTrust(const vector<uint8_t>& rootOfTrust) {
+    cppbor::Array request;
+    request.add(EncodedItem(rootOfTrust));  // taggedItem.
+    auto [item, err] = card_->sendRequest(Instruction::INS_SEND_ROT_DATA_CMD, request);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending in sendRootOfTrust.";
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    LOG(INFO) << "JavacardKeyMintDevice::sendRootOfTrust success";
+    return ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::security::keymint
diff --git a/ready_se/google/keymint/KM300/HAL/JavacardKeyMintDevice.h b/ready_se/google/keymint/KM300/HAL/JavacardKeyMintDevice.h
new file mode 100644
index 0000000..adf0f7d
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/JavacardKeyMintDevice.h
@@ -0,0 +1,124 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/security/keymint/BnKeyMintDevice.h>
+#include <aidl/android/hardware/security/keymint/BnKeyMintOperation.h>
+#include <aidl/android/hardware/security/keymint/HardwareAuthToken.h>
+#include <aidl/android/hardware/security/sharedsecret/SharedSecretParameters.h>
+
+#include "CborConverter.h"
+#include "JavacardSecureElement.h"
+
+namespace aidl::android::hardware::security::keymint {
+using cppbor::Item;
+using ::keymint::javacard::CborConverter;
+using ::keymint::javacard::JavacardSecureElement;
+using ndk::ScopedAStatus;
+using secureclock::TimeStampToken;
+using std::array;
+using std::optional;
+using std::shared_ptr;
+using std::vector;
+
+class JavacardKeyMintDevice : public BnKeyMintDevice {
+  public:
+    explicit JavacardKeyMintDevice(shared_ptr<JavacardSecureElement> card)
+        : securitylevel_(SecurityLevel::STRONGBOX), card_(card) {
+        card_->initializeJavacard();
+    }
+    virtual ~JavacardKeyMintDevice() {}
+
+    ScopedAStatus getHardwareInfo(KeyMintHardwareInfo* info) override;
+
+    ScopedAStatus addRngEntropy(const vector<uint8_t>& data) override;
+
+    ScopedAStatus generateKey(const vector<KeyParameter>& keyParams,
+                              const optional<AttestationKey>& attestationKey,
+                              KeyCreationResult* creationResult) override;
+
+    ScopedAStatus importKey(const vector<KeyParameter>& keyParams, KeyFormat keyFormat,
+                            const vector<uint8_t>& keyData,
+                            const optional<AttestationKey>& attestationKey,
+                            KeyCreationResult* creationResult) override;
+
+    ScopedAStatus importWrappedKey(const vector<uint8_t>& wrappedKeyData,
+                                   const vector<uint8_t>& wrappingKeyBlob,
+                                   const vector<uint8_t>& maskingKey,
+                                   const vector<KeyParameter>& unwrappingParams,
+                                   int64_t passwordSid, int64_t biometricSid,
+                                   KeyCreationResult* creationResult) override;
+
+    ScopedAStatus upgradeKey(const vector<uint8_t>& keyBlobToUpgrade,
+                             const vector<KeyParameter>& upgradeParams,
+                             vector<uint8_t>* keyBlob) override;
+
+    ScopedAStatus deleteKey(const vector<uint8_t>& keyBlob) override;
+    ScopedAStatus deleteAllKeys() override;
+    ScopedAStatus destroyAttestationIds() override;
+
+    virtual ScopedAStatus begin(KeyPurpose in_purpose, const std::vector<uint8_t>& in_keyBlob,
+                                const std::vector<KeyParameter>& in_params,
+                                const std::optional<HardwareAuthToken>& in_authToken,
+                                BeginResult* _aidl_return) override;
+
+    ScopedAStatus deviceLocked(bool passwordOnly,
+                               const optional<TimeStampToken>& timestampToken) override;
+
+    ScopedAStatus earlyBootEnded() override;
+
+    ScopedAStatus getKeyCharacteristics(const std::vector<uint8_t>& in_keyBlob,
+                                        const std::vector<uint8_t>& in_appId,
+                                        const std::vector<uint8_t>& in_appData,
+                                        std::vector<KeyCharacteristics>* _aidl_return) override;
+
+    ScopedAStatus convertStorageKeyToEphemeral(const std::vector<uint8_t>& storageKeyBlob,
+                                               std::vector<uint8_t>* ephemeralKeyBlob) override;
+
+    ScopedAStatus getRootOfTrustChallenge(array<uint8_t, 16>* challenge) override;
+
+    ScopedAStatus getRootOfTrust(const array<uint8_t, 16>& challenge,
+                                 vector<uint8_t>* rootOfTrust) override;
+
+    ScopedAStatus sendRootOfTrust(const vector<uint8_t>& rootOfTrust) override;
+
+  private:
+    keymaster_error_t parseWrappedKey(const vector<uint8_t>& wrappedKeyData,
+                                      std::vector<uint8_t>& iv, std::vector<uint8_t>& transitKey,
+                                      std::vector<uint8_t>& secureKey, std::vector<uint8_t>& tag,
+                                      vector<KeyParameter>& authList, KeyFormat& keyFormat,
+                                      std::vector<uint8_t>& wrappedKeyDescription);
+
+    std::tuple<std::unique_ptr<Item>, keymaster_error_t> sendBeginImportWrappedKeyCmd(
+        const std::vector<uint8_t>& transitKey, const std::vector<uint8_t>& wrappingKeyBlob,
+        const std::vector<uint8_t>& maskingKey, const vector<KeyParameter>& unwrappingParams);
+
+    std::tuple<std::unique_ptr<Item>, keymaster_error_t>
+    sendFinishImportWrappedKeyCmd(const vector<KeyParameter>& keyParams, KeyFormat keyFormat,
+                                  const std::vector<uint8_t>& secureKey,
+                                  const std::vector<uint8_t>& tag, const std::vector<uint8_t>& iv,
+                                  const std::vector<uint8_t>& wrappedKeyDescription,
+                                  int64_t passwordSid, int64_t biometricSid);
+
+    ScopedAStatus defaultHwInfo(KeyMintHardwareInfo* info);
+
+    const SecurityLevel securitylevel_;
+    const shared_ptr<JavacardSecureElement> card_;
+    CborConverter cbor_;
+};
+
+}  // namespace aidl::android::hardware::security::keymint
diff --git a/ready_se/google/keymint/KM300/HAL/JavacardKeyMintOperation.cpp b/ready_se/google/keymint/KM300/HAL/JavacardKeyMintOperation.cpp
new file mode 100644
index 0000000..a46f066
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/JavacardKeyMintOperation.cpp
@@ -0,0 +1,300 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "javacard.strongbox.keymint.operation-impl"
+
+#include "JavacardKeyMintOperation.h"
+
+#include <KeyMintUtils.h>
+#include <aidl/android/hardware/security/keymint/ErrorCode.h>
+#include <aidl/android/hardware/security/secureclock/ISecureClock.h>
+#include <android-base/logging.h>
+
+#include "CborConverter.h"
+
+namespace aidl::android::hardware::security::keymint {
+using cppbor::Bstr;
+using cppbor::Uint;
+using secureclock::TimeStampToken;
+
+JavacardKeyMintOperation::~JavacardKeyMintOperation() {
+    if (opHandle_ != 0) {
+        JavacardKeyMintOperation::abort();
+    }
+}
+
+ScopedAStatus JavacardKeyMintOperation::updateAad(const vector<uint8_t>& input,
+                                                  const optional<HardwareAuthToken>& authToken,
+                                                  const optional<TimeStampToken>& timestampToken) {
+    cppbor::Array request;
+    request.add(Uint(opHandle_));
+    request.add(Bstr(input));
+    cbor_.addHardwareAuthToken(request, authToken.value_or(HardwareAuthToken()));
+    cbor_.addTimeStampToken(request, timestampToken.value_or(TimeStampToken()));
+    auto [item, err] = card_->sendRequest(Instruction::INS_UPDATE_AAD_OPERATION_CMD, request);
+    if (err != KM_ERROR_OK) {
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardKeyMintOperation::update(const vector<uint8_t>& input,
+                                               const optional<HardwareAuthToken>& authToken,
+                                               const optional<TimeStampToken>& timestampToken,
+                                               vector<uint8_t>* output) {
+    HardwareAuthToken aToken = authToken.value_or(HardwareAuthToken());
+    TimeStampToken tToken = timestampToken.value_or(TimeStampToken());
+    DataView view = {.buffer = {}, .data = input, .start = 0, .length = input.size()};
+    keymaster_error_t err = bufferData(view);
+    if (err != KM_ERROR_OK) {
+        return km_utils::kmError2ScopedAStatus(err);
+    }
+    if (!(bufferingMode_ == BufferingMode::EC_NO_DIGEST ||
+          bufferingMode_ == BufferingMode::RSA_DECRYPT_OR_NO_DIGEST)) {
+        if (view.length > MAX_CHUNK_SIZE) {
+            err = updateInChunks(view, aToken, tToken, output);
+            if (err != KM_ERROR_OK) {
+                return km_utils::kmError2ScopedAStatus(err);
+            }
+        }
+        vector<uint8_t> remaining = popNextChunk(view, view.length);
+        err = sendUpdate(remaining, aToken, tToken, *output);
+    }
+    return km_utils::kmError2ScopedAStatus(err);
+}
+
+ScopedAStatus JavacardKeyMintOperation::finish(const optional<vector<uint8_t>>& input,
+                                               const optional<vector<uint8_t>>& signature,
+                                               const optional<HardwareAuthToken>& authToken,
+                                               const optional<TimeStampToken>& timestampToken,
+                                               const optional<vector<uint8_t>>& confirmationToken,
+                                               vector<uint8_t>* output) {
+    HardwareAuthToken aToken = authToken.value_or(HardwareAuthToken());
+    TimeStampToken tToken = timestampToken.value_or(TimeStampToken());
+    const vector<uint8_t> confToken = confirmationToken.value_or(vector<uint8_t>());
+    const vector<uint8_t> inData = input.value_or(vector<uint8_t>());
+    DataView view = {.buffer = {}, .data = inData, .start = 0, .length = inData.size()};
+    const vector<uint8_t> sign = signature.value_or(vector<uint8_t>());
+    if (!(bufferingMode_ == BufferingMode::EC_NO_DIGEST ||
+          bufferingMode_ == BufferingMode::RSA_DECRYPT_OR_NO_DIGEST)) {
+        appendBufferedData(view);
+        if (view.length > MAX_CHUNK_SIZE) {
+            auto err = updateInChunks(view, aToken, tToken, output);
+            if (err != KM_ERROR_OK) {
+                return km_utils::kmError2ScopedAStatus(err);
+            }
+        }
+    } else {
+        keymaster_error_t err = bufferData(view);
+        if (err != KM_ERROR_OK) {
+            return km_utils::kmError2ScopedAStatus(err);
+        }
+        appendBufferedData(view);
+    }
+    vector<uint8_t> remaining = popNextChunk(view, view.length);
+    return km_utils::kmError2ScopedAStatus(
+        sendFinish(remaining, sign, aToken, tToken, confToken, *output));
+}
+
+ScopedAStatus JavacardKeyMintOperation::abort() {
+    Array request;
+    request.add(Uint(opHandle_));
+    auto [item, err] = card_->sendRequest(Instruction::INS_ABORT_OPERATION_CMD, request);
+    opHandle_ = 0;
+    buffer_.clear();
+    return km_utils::kmError2ScopedAStatus(err);
+}
+
+void JavacardKeyMintOperation::blockAlign(DataView& view, uint16_t blockSize) {
+    appendBufferedData(view);
+    uint16_t offset = getDataViewOffset(view, blockSize);
+    if (view.buffer.empty() && !view.data.empty()) {
+        buffer_.insert(buffer_.end(), view.data.begin() + offset, view.data.end());
+    } else if (view.data.empty() && !view.buffer.empty()) {
+        buffer_.insert(buffer_.end(), view.buffer.begin() + offset, view.buffer.end());
+    } else {
+        if (offset < view.buffer.size()) {
+            buffer_.insert(buffer_.end(), view.buffer.begin() + offset, view.buffer.end());
+            buffer_.insert(buffer_.end(), view.data.begin(), view.data.end());
+        } else {
+            offset = offset - view.buffer.size();
+            buffer_.insert(buffer_.end(), view.data.begin() + offset, view.data.end());
+        }
+    }
+    // adjust the view length by removing the buffered data size from it.
+    view.length = view.length - buffer_.size();
+}
+
+uint16_t JavacardKeyMintOperation::getDataViewOffset(DataView& view, uint16_t blockSize) {
+    uint16_t offset = 0;
+    uint16_t remaining = 0;
+    switch (bufferingMode_) {
+    case BufferingMode::BUF_DES_DECRYPT_PKCS7_BLOCK_ALIGNED:
+    case BufferingMode::BUF_AES_DECRYPT_PKCS7_BLOCK_ALIGNED:
+        offset = ((view.length / blockSize)) * blockSize;
+        remaining = (view.length % blockSize);
+        if (offset >= blockSize && remaining == 0) {
+            offset -= blockSize;
+        }
+        break;
+    case BufferingMode::BUF_DES_ENCRYPT_PKCS7_BLOCK_ALIGNED:
+    case BufferingMode::BUF_AES_ENCRYPT_PKCS7_BLOCK_ALIGNED:
+        offset = ((view.length / blockSize)) * blockSize;
+        break;
+    case BufferingMode::BUF_AES_GCM_DECRYPT_BLOCK_ALIGNED:
+        if (view.length > macLength_) {
+            offset = (view.length - macLength_);
+        }
+        break;
+    default:
+        break;
+    }
+    return offset;
+}
+
+keymaster_error_t JavacardKeyMintOperation::bufferData(DataView& view) {
+    if (view.data.empty()) return KM_ERROR_OK;  // nothing to buffer
+    switch (bufferingMode_) {
+    case BufferingMode::RSA_DECRYPT_OR_NO_DIGEST:
+        buffer_.insert(buffer_.end(), view.data.begin(), view.data.end());
+        if (buffer_.size() > RSA_BUFFER_SIZE) {
+            abort();
+            return KM_ERROR_INVALID_INPUT_LENGTH;
+        }
+        view.start = 0;
+        view.length = 0;
+        break;
+    case BufferingMode::EC_NO_DIGEST:
+        if (buffer_.size() < EC_BUFFER_SIZE) {
+            buffer_.insert(buffer_.end(), view.data.begin(), view.data.end());
+            // Truncate the buffered data if greater then allowed EC buffer size.
+            if (buffer_.size() > EC_BUFFER_SIZE) {
+                buffer_.erase(buffer_.begin() + EC_BUFFER_SIZE, buffer_.end());
+            }
+        }
+        view.start = 0;
+        view.length = 0;
+        break;
+    case BufferingMode::BUF_AES_ENCRYPT_PKCS7_BLOCK_ALIGNED:
+    case BufferingMode::BUF_AES_DECRYPT_PKCS7_BLOCK_ALIGNED:
+        blockAlign(view, AES_BLOCK_SIZE);
+        break;
+    case BufferingMode::BUF_AES_GCM_DECRYPT_BLOCK_ALIGNED:
+        blockAlign(view, macLength_);
+        break;
+    case BufferingMode::BUF_DES_ENCRYPT_PKCS7_BLOCK_ALIGNED:
+    case BufferingMode::BUF_DES_DECRYPT_PKCS7_BLOCK_ALIGNED:
+        blockAlign(view, DES_BLOCK_SIZE);
+        break;
+    case BufferingMode::NONE:
+        break;
+    }
+    return KM_ERROR_OK;
+}
+
+// Incrementally send the request using multiple updates.
+keymaster_error_t JavacardKeyMintOperation::updateInChunks(DataView& view,
+                                                           HardwareAuthToken& authToken,
+                                                           TimeStampToken& timestampToken,
+                                                           vector<uint8_t>* output) {
+    keymaster_error_t sendError = KM_ERROR_UNKNOWN_ERROR;
+    while (view.length > MAX_CHUNK_SIZE) {
+        vector<uint8_t> chunk = popNextChunk(view, MAX_CHUNK_SIZE);
+        sendError = sendUpdate(chunk, authToken, timestampToken, *output);
+        if (sendError != KM_ERROR_OK) {
+            return sendError;
+        }
+        // Clear tokens
+        if (!authToken.mac.empty()) authToken = HardwareAuthToken();
+        if (!timestampToken.mac.empty()) timestampToken = TimeStampToken();
+    }
+    return KM_ERROR_OK;
+}
+
+vector<uint8_t> JavacardKeyMintOperation::popNextChunk(DataView& view, uint32_t chunkSize) {
+    uint32_t start = view.start;
+    uint32_t end = start + ((view.length < chunkSize) ? view.length : chunkSize);
+    vector<uint8_t> chunk;
+    if (start < view.buffer.size()) {
+        if (end < view.buffer.size()) {
+            chunk = {view.buffer.begin() + start, view.buffer.begin() + end};
+        } else {
+            end = end - view.buffer.size();
+            chunk = {view.buffer.begin() + start, view.buffer.end()};
+            chunk.insert(chunk.end(), view.data.begin(), view.data.begin() + end);
+        }
+    } else {
+        start = start - view.buffer.size();
+        end = end - view.buffer.size();
+        chunk = {view.data.begin() + start, view.data.begin() + end};
+    }
+    view.start = view.start + chunk.size();
+    view.length = view.length - chunk.size();
+    return chunk;
+}
+
+keymaster_error_t JavacardKeyMintOperation::sendUpdate(const vector<uint8_t>& input,
+                                                       const HardwareAuthToken& authToken,
+                                                       const TimeStampToken& timestampToken,
+                                                       vector<uint8_t>& output) {
+    if (input.empty()) {
+        return KM_ERROR_OK;
+    }
+    cppbor::Array request;
+    request.add(Uint(opHandle_));
+    request.add(Bstr(input));
+    cbor_.addHardwareAuthToken(request, authToken);
+    cbor_.addTimeStampToken(request, timestampToken);
+    auto [item, error] = card_->sendRequest(Instruction::INS_UPDATE_OPERATION_CMD, request);
+    if (error != KM_ERROR_OK) {
+        return error;
+    }
+    auto optTemp = cbor_.getByteArrayVec(item, 1);
+    if (!optTemp) {
+        return KM_ERROR_UNKNOWN_ERROR;
+    }
+    output.insert(output.end(), optTemp.value().begin(), optTemp.value().end());
+    return KM_ERROR_OK;
+}
+
+keymaster_error_t JavacardKeyMintOperation::sendFinish(const vector<uint8_t>& data,
+                                                       const vector<uint8_t>& sign,
+                                                       const HardwareAuthToken& authToken,
+                                                       const TimeStampToken& timestampToken,
+                                                       const vector<uint8_t>& confToken,
+                                                       vector<uint8_t>& output) {
+    cppbor::Array request;
+    request.add(Uint(opHandle_));
+    request.add(Bstr(data));
+    request.add(Bstr(sign));
+    cbor_.addHardwareAuthToken(request, authToken);
+    cbor_.addTimeStampToken(request, timestampToken);
+    request.add(Bstr(confToken));
+
+    auto [item, err] = card_->sendRequest(Instruction::INS_FINISH_OPERATION_CMD, request);
+    if (err != KM_ERROR_OK) {
+        return err;
+    }
+    auto optTemp = cbor_.getByteArrayVec(item, 1);
+    if (!optTemp) {
+        return KM_ERROR_UNKNOWN_ERROR;
+    }
+    opHandle_ = 0;
+    output.insert(output.end(), optTemp.value().begin(), optTemp.value().end());
+    return KM_ERROR_OK;
+}
+
+}  // namespace aidl::android::hardware::security::keymint
diff --git a/ready_se/google/keymint/KM300/HAL/JavacardKeyMintOperation.h b/ready_se/google/keymint/KM300/HAL/JavacardKeyMintOperation.h
new file mode 100644
index 0000000..c1d967a
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/JavacardKeyMintOperation.h
@@ -0,0 +1,136 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <vector>
+
+#include <aidl/android/hardware/security/keymint/BnKeyMintOperation.h>
+#include <aidl/android/hardware/security/secureclock/ISecureClock.h>
+#include <hardware/keymaster_defs.h>
+
+#include "CborConverter.h"
+#include "JavacardSecureElement.h"
+
+#define AES_BLOCK_SIZE 16
+#define DES_BLOCK_SIZE 8
+#define RSA_BUFFER_SIZE 256
+#define EC_BUFFER_SIZE 32
+#define MAX_CHUNK_SIZE 256
+
+namespace aidl::android::hardware::security::keymint {
+using cppbor::Array;
+using cppbor::Item;
+using ::keymint::javacard::CborConverter;
+using ::keymint::javacard::Instruction;
+using ::keymint::javacard::JavacardSecureElement;
+using ::ndk::ScopedAStatus;
+using secureclock::TimeStampToken;
+using std::optional;
+using std::shared_ptr;
+using std::vector;
+
+// Bufferig modes for update
+enum class BufferingMode : int32_t {
+    NONE = 0,  // Send everything to javacard - most of the assymteric operations
+    RSA_DECRYPT_OR_NO_DIGEST =
+        1,             // Buffer everything in update upto 256 bytes and send in finish. If
+                       // input data is greater then 256 bytes then it is an error. Javacard
+                       // will further check according to exact key size and crypto provider.
+    EC_NO_DIGEST = 2,  // Buffer upto 65 bytes and then truncate. Javacard will further truncate
+                       // upto exact keysize.
+    BUF_AES_ENCRYPT_PKCS7_BLOCK_ALIGNED = 3,  // Buffer 16 bytes.
+    BUF_AES_DECRYPT_PKCS7_BLOCK_ALIGNED = 4,  // Buffer 16 bytes.
+    BUF_DES_ENCRYPT_PKCS7_BLOCK_ALIGNED = 5,  // Buffer 8 bytes.
+    BUF_DES_DECRYPT_PKCS7_BLOCK_ALIGNED = 6,  // Buffer 8 bytes.
+    BUF_AES_GCM_DECRYPT_BLOCK_ALIGNED = 7,    // Buffer 16 bytes.
+
+};
+
+// The is the view in the input data being processed by update/finish funcion.
+
+struct DataView {
+    vector<uint8_t> buffer;       // previously buffered data from cycle n-1
+    const vector<uint8_t>& data;  // current data in cycle n.
+    uint32_t start;               // start of the view
+    size_t length;                // length of the view
+};
+
+class JavacardKeyMintOperation : public BnKeyMintOperation {
+  public:
+    explicit JavacardKeyMintOperation(keymaster_operation_handle_t opHandle,
+                                      BufferingMode bufferingMode, uint16_t macLength,
+                                      shared_ptr<JavacardSecureElement> card)
+        : buffer_(vector<uint8_t>()), bufferingMode_(bufferingMode), macLength_(macLength),
+          card_(card), opHandle_(opHandle) {}
+    virtual ~JavacardKeyMintOperation();
+
+    ScopedAStatus updateAad(const vector<uint8_t>& input,
+                            const optional<HardwareAuthToken>& authToken,
+                            const optional<TimeStampToken>& timestampToken) override;
+
+    ScopedAStatus update(const vector<uint8_t>& input, const optional<HardwareAuthToken>& authToken,
+                         const optional<TimeStampToken>& timestampToken,
+                         vector<uint8_t>* output) override;
+
+    ScopedAStatus finish(const optional<vector<uint8_t>>& input,
+                         const optional<vector<uint8_t>>& signature,
+                         const optional<HardwareAuthToken>& authToken,
+                         const optional<TimeStampToken>& timestampToken,
+                         const optional<vector<uint8_t>>& confirmationToken,
+                         vector<uint8_t>* output) override;
+
+    ScopedAStatus abort() override;
+
+  private:
+    vector<uint8_t> popNextChunk(DataView& view, uint32_t chunkSize);
+
+    keymaster_error_t updateInChunks(DataView& data, HardwareAuthToken& authToken,
+                                     TimeStampToken& timestampToken, vector<uint8_t>* output);
+
+    keymaster_error_t sendFinish(const vector<uint8_t>& data, const vector<uint8_t>& signature,
+                                 const HardwareAuthToken& authToken,
+                                 const TimeStampToken& timestampToken,
+                                 const vector<uint8_t>& confToken, vector<uint8_t>& output);
+
+    keymaster_error_t sendUpdate(const vector<uint8_t>& data, const HardwareAuthToken& authToken,
+                                 const TimeStampToken& timestampToken, vector<uint8_t>& output);
+
+    inline void appendBufferedData(DataView& view) {
+        if (!buffer_.empty()) {
+            view.buffer = buffer_;
+            view.length = view.length + buffer_.size();
+            view.start = 0;
+            // view.buffer = insert(data.begin(), buffer_.begin(), buffer_.end());
+            buffer_.clear();
+        }
+    }
+
+    std::tuple<std::unique_ptr<Item>, keymaster_error_t> sendRequest(Instruction ins,
+                                                                     Array& request);
+    keymaster_error_t bufferData(DataView& data);
+    void blockAlign(DataView& data, uint16_t blockSize);
+    uint16_t getDataViewOffset(DataView& view, uint16_t blockSize);
+
+    vector<uint8_t> buffer_;
+    BufferingMode bufferingMode_;
+    uint16_t macLength_;
+    const shared_ptr<JavacardSecureElement> card_;
+    keymaster_operation_handle_t opHandle_;
+    CborConverter cbor_;
+};
+
+}  // namespace aidl::android::hardware::security::keymint
diff --git a/ready_se/google/keymint/KM300/HAL/JavacardRemotelyProvisionedComponentDevice.cpp b/ready_se/google/keymint/KM300/HAL/JavacardRemotelyProvisionedComponentDevice.cpp
new file mode 100644
index 0000000..c79889f
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/JavacardRemotelyProvisionedComponentDevice.cpp
@@ -0,0 +1,320 @@
+/*
+ * Copyright 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "javacard.keymint.device.rkp.strongbox-impl"
+
+#include "JavacardRemotelyProvisionedComponentDevice.h"
+
+#include <aidl/android/hardware/security/keymint/MacedPublicKey.h>
+
+#include <KeyMintUtils.h>
+#include <android-base/logging.h>
+#include <keymaster/cppcose/cppcose.h>
+#include <keymaster/remote_provisioning_utils.h>
+
+namespace aidl::android::hardware::security::keymint {
+using cppbor::Array;
+using cppbor::EncodedItem;
+using cppcose::kCoseMac0EntryCount;
+using cppcose::kCoseMac0Payload;
+using ::keymint::javacard::Instruction;
+using std::string;
+
+// RKP error codes defined in keymint applet.
+constexpr int32_t kStatusFailed = 32000;
+constexpr int32_t kStatusInvalidMac = 32001;
+constexpr int32_t kStatusProductionKeyInTestRequest = 32002;
+constexpr int32_t kStatusTestKeyInProductionRequest = 32003;
+constexpr int32_t kStatusInvalidEek = 32004;
+constexpr int32_t kStatusInvalidState = 32005;
+
+namespace {
+
+keymaster_error_t translateRkpErrorCode(keymaster_error_t error) {
+    switch (static_cast<int32_t>(-error)) {
+    case kStatusFailed:
+    case kStatusInvalidState:
+        return static_cast<keymaster_error_t>(BnRemotelyProvisionedComponent::STATUS_FAILED);
+    case kStatusInvalidMac:
+        return static_cast<keymaster_error_t>(BnRemotelyProvisionedComponent::STATUS_INVALID_MAC);
+    case kStatusProductionKeyInTestRequest:
+        return static_cast<keymaster_error_t>(
+            BnRemotelyProvisionedComponent::STATUS_PRODUCTION_KEY_IN_TEST_REQUEST);
+    case kStatusTestKeyInProductionRequest:
+        return static_cast<keymaster_error_t>(
+            BnRemotelyProvisionedComponent::STATUS_TEST_KEY_IN_PRODUCTION_REQUEST);
+    case kStatusInvalidEek:
+        return static_cast<keymaster_error_t>(BnRemotelyProvisionedComponent::STATUS_INVALID_EEK);
+    }
+    return error;
+}
+
+ScopedAStatus defaultHwInfo(RpcHardwareInfo* info) {
+    info->versionNumber = 3;
+    info->rpcAuthorName = "Google";
+    info->supportedEekCurve = RpcHardwareInfo::CURVE_NONE;
+    info->uniqueId = "Google Strongbox KeyMint 3";
+    info->supportedNumKeysInCsr = RpcHardwareInfo::MIN_SUPPORTED_NUM_KEYS_IN_CSR;
+    return ScopedAStatus::ok();
+}
+
+uint32_t coseKeyEncodedSize(const std::vector<MacedPublicKey>& keysToSign) {
+    uint32_t size = 0;
+    for (auto& macKey : keysToSign) {
+        auto [macedKeyItem, _, coseMacErrMsg] = cppbor::parse(macKey.macedKey);
+        if (!macedKeyItem || !macedKeyItem->asArray() ||
+            macedKeyItem->asArray()->size() != kCoseMac0EntryCount) {
+            LOG(ERROR) << "Invalid COSE_Mac0 structure";
+            return 0;
+        }
+        auto payload = macedKeyItem->asArray()->get(kCoseMac0Payload)->asBstr();
+        if (!payload) return 0;
+        size += payload->value().size();
+    }
+    return size;
+}
+
+}  // namespace
+
+ScopedAStatus JavacardRemotelyProvisionedComponentDevice::getHardwareInfo(RpcHardwareInfo* info) {
+    auto [item, err] = card_->sendRequest(Instruction::INS_GET_RKP_HARDWARE_INFO);
+    std::optional<uint64_t> optVersionNumber;
+    std::optional<uint64_t> optSupportedEekCurve;
+    std::optional<string> optRpcAuthorName;
+    std::optional<string> optUniqueId;
+    std::optional<uint64_t> optMinSupportedKeysInCsr;
+    if (err != KM_ERROR_OK || !(optVersionNumber = cbor_.getUint64(item, 1)) ||
+        !(optRpcAuthorName = cbor_.getByteArrayStr(item, 2)) ||
+        !(optSupportedEekCurve = cbor_.getUint64(item, 3)) ||
+        !(optUniqueId = cbor_.getByteArrayStr(item, 4)) ||
+        !(optMinSupportedKeysInCsr = cbor_.getUint64(item, 5))) {
+        LOG(ERROR) << "Error in response of getHardwareInfo.";
+        LOG(INFO) << "Returning defaultHwInfo in getHardwareInfo.";
+        return defaultHwInfo(info);
+    }
+    info->rpcAuthorName = std::move(optRpcAuthorName.value());
+    info->versionNumber = static_cast<int32_t>(std::move(optVersionNumber.value()));
+    info->supportedEekCurve = static_cast<int32_t>(std::move(optSupportedEekCurve.value()));
+    info->uniqueId = std::move(optUniqueId.value());
+    info->supportedNumKeysInCsr = static_cast<int32_t>(std::move(optMinSupportedKeysInCsr.value()));
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardRemotelyProvisionedComponentDevice::generateEcdsaP256KeyPair(
+    bool testMode, MacedPublicKey* macedPublicKey, std::vector<uint8_t>* privateKeyHandle) {
+    cppbor::Array array;
+    array.add(testMode);
+    auto [item, err] = card_->sendRequest(Instruction::INS_GENERATE_RKP_KEY_CMD, array);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending generateEcdsaP256KeyPair.";
+        return km_utils::kmError2ScopedAStatus(translateRkpErrorCode(err));
+    }
+    std::optional<std::vector<uint8_t>> optMacedKey;
+    std::optional<std::vector<uint8_t>> optPKeyHandle;
+    if (!(optMacedKey = cbor_.getByteArrayVec(item, 1)) ||
+        !(optPKeyHandle = cbor_.getByteArrayVec(item, 2))) {
+        LOG(ERROR) << "Error in decoding the response in generateEcdsaP256KeyPair.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    *privateKeyHandle = std::move(optPKeyHandle.value());
+    macedPublicKey->macedKey = std::move(optMacedKey.value());
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardRemotelyProvisionedComponentDevice::beginSendData(
+    const std::vector<MacedPublicKey>& keysToSign, const std::vector<uint8_t>& challenge,
+    DeviceInfo* deviceInfo, uint32_t* version, std::string* certificateType) {
+    uint32_t totalEncodedSize = coseKeyEncodedSize(keysToSign);
+    cppbor::Array array;
+    array.add(keysToSign.size());
+    array.add(totalEncodedSize);
+    array.add(challenge);
+    auto [item, err] = card_->sendRequest(Instruction::INS_BEGIN_SEND_DATA_CMD, array);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in beginSendData.";
+        return km_utils::kmError2ScopedAStatus(translateRkpErrorCode(err));
+    }
+    auto optDecodedDeviceInfo = cbor_.getByteArrayVec(item, 1);
+    if (!optDecodedDeviceInfo) {
+        LOG(ERROR) << "Error in decoding deviceInfo response in beginSendData.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    deviceInfo->deviceInfo = std::move(optDecodedDeviceInfo.value());
+    auto optVersion = cbor_.getUint64(item, 2);
+    if (!optVersion) {
+        LOG(ERROR) << "Error in decoding version in beginSendData.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    *version = optVersion.value();
+    auto optCertType = cbor_.getTextStr(item, 3);
+    if (!optCertType) {
+        LOG(ERROR) << "Error in decoding cert type in beginSendData.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    *certificateType = std::move(optCertType.value());
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardRemotelyProvisionedComponentDevice::updateMacedKey(
+    const std::vector<MacedPublicKey>& keysToSign, Array& coseKeys) {
+    for (auto& macedPublicKey : keysToSign) {
+        cppbor::Array array;
+        array.add(EncodedItem(macedPublicKey.macedKey));
+        auto [item, err] = card_->sendRequest(Instruction::INS_UPDATE_KEY_CMD, array);
+        if (err != KM_ERROR_OK) {
+            LOG(ERROR) << "Error in updateMacedKey.";
+            return km_utils::kmError2ScopedAStatus(translateRkpErrorCode(err));
+        }
+        auto coseKeyData = cbor_.getByteArrayVec(item, 1);
+        coseKeys.add(EncodedItem(coseKeyData.value()));
+    }
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardRemotelyProvisionedComponentDevice::finishSendData(
+    std::vector<uint8_t>& coseEncryptProtectedHeader, std::vector<uint8_t>& signature,
+    uint32_t& version, uint32_t& respFlag) {
+    auto [item, err] = card_->sendRequest(Instruction::INS_FINISH_SEND_DATA_CMD);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in finishSendData.";
+        return km_utils::kmError2ScopedAStatus(translateRkpErrorCode(err));
+    }
+    auto optCEncryptProtectedHeader = cbor_.getByteArrayVec(item, 1);
+    auto optSignature = cbor_.getByteArrayVec(item, 2);
+    auto optVersion = cbor_.getUint64(item, 3);
+    auto optRespFlag = cbor_.getUint64(item, 4);
+    if (!optCEncryptProtectedHeader || !optSignature || !optVersion || !optRespFlag) {
+        LOG(ERROR) << "Error in decoding response in finishSendData.";
+        return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+
+    coseEncryptProtectedHeader = std::move(optCEncryptProtectedHeader.value());
+    signature.insert(signature.end(), optSignature->begin(), optSignature->end());
+    version = std::move(optVersion.value());
+    respFlag = std::move(optRespFlag.value());
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus
+JavacardRemotelyProvisionedComponentDevice::getDiceCertChain(std::vector<uint8_t>& diceCertChain) {
+    uint32_t respFlag = 0;
+    do {
+        auto [item, err] = card_->sendRequest(Instruction::INS_GET_DICE_CERT_CHAIN_CMD);
+        if (err != KM_ERROR_OK) {
+            LOG(ERROR) << "Error in getDiceCertChain.";
+            return km_utils::kmError2ScopedAStatus(translateRkpErrorCode(err));
+        }
+        auto optDiceCertChain = cbor_.getByteArrayVec(item, 1);
+        auto optRespFlag = cbor_.getUint64(item, 2);
+        if (!optDiceCertChain || !optRespFlag) {
+            LOG(ERROR) << "Error in decoding response in getDiceCertChain.";
+            return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+        }
+        respFlag = optRespFlag.value();
+        diceCertChain.insert(diceCertChain.end(), optDiceCertChain->begin(),
+                             optDiceCertChain->end());
+    } while (respFlag != 0);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus
+JavacardRemotelyProvisionedComponentDevice::getUdsCertsChain(std::vector<uint8_t>& udsCertsChain) {
+    uint32_t respFlag = 0;
+    do {
+        auto [item, err] = card_->sendRequest(Instruction::INS_GET_UDS_CERTS_CMD);
+        if (err != KM_ERROR_OK) {
+            LOG(ERROR) << "Error in getUdsCertsChain.";
+            return km_utils::kmError2ScopedAStatus(translateRkpErrorCode(err));
+        }
+        auto optUdsCertData = cbor_.getByteArrayVec(item, 1);
+        auto optRespFlag = cbor_.getUint64(item, 2);
+        if (!optUdsCertData || !optRespFlag) {
+            LOG(ERROR) << "Error in decoding og response in getUdsCertsChain.";
+            return km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+        }
+        respFlag = optRespFlag.value();
+        udsCertsChain.insert(udsCertsChain.end(), optUdsCertData->begin(), optUdsCertData->end());
+    } while (respFlag != 0);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus JavacardRemotelyProvisionedComponentDevice::generateCertificateRequest(
+    bool, const std::vector<MacedPublicKey>&, const std::vector<uint8_t>&,
+    const std::vector<uint8_t>&, DeviceInfo*, ProtectedData*, std::vector<uint8_t>*) {
+    return km_utils::kmError2ScopedAStatus(static_cast<keymaster_error_t>(STATUS_REMOVED));
+}
+
+ScopedAStatus JavacardRemotelyProvisionedComponentDevice::generateCertificateRequestV2(
+    const std::vector<MacedPublicKey>& keysToSign, const std::vector<uint8_t>& challenge,
+    std::vector<uint8_t>* csr) {
+    uint32_t version;
+    uint32_t csrPayloadSchemaVersion;
+    std::string certificateType;
+    uint32_t respFlag;
+    DeviceInfo deviceInfo;
+    Array coseKeys;
+    std::vector<uint8_t> protectedHeader;
+    cppbor::Map coseEncryptUnProtectedHeader;
+    std::vector<uint8_t> signature;
+    std::vector<uint8_t> diceCertChain;
+    std::vector<uint8_t> udsCertChain;
+    cppbor::Array payLoad;
+
+    auto ret = beginSendData(keysToSign, challenge, &deviceInfo, &csrPayloadSchemaVersion,
+                             &certificateType);
+    if (!ret.isOk()) return ret;
+
+    ret = updateMacedKey(keysToSign, coseKeys);
+    if (!ret.isOk()) return ret;
+
+    ret = finishSendData(protectedHeader, signature, version, respFlag);
+    if (!ret.isOk()) return ret;
+
+    ret = getUdsCertsChain(udsCertChain);
+    if (!ret.isOk()) return ret;
+
+    ret = getDiceCertChain(diceCertChain);
+    if (!ret.isOk()) return ret;
+
+    auto payload = cppbor::Array()
+                       .add(csrPayloadSchemaVersion)
+                       .add(certificateType)
+                       .add(EncodedItem(deviceInfo.deviceInfo))  // deviceinfo
+                       .add(std::move(coseKeys))                 // KeysToSign
+                       .encode();
+
+    auto signDataPayload = cppbor::Array()
+                               .add(challenge)  // Challenge
+                               .add(std::move(payload))
+                               .encode();
+
+    auto signedData = cppbor::Array()
+                          .add(std::move(protectedHeader))
+                          .add(cppbor::Map() /* unprotected parameters */)
+                          .add(std::move(signDataPayload))
+                          .add(std::move(signature));
+
+    *csr = cppbor::Array()
+               .add(version)
+               .add(EncodedItem(udsCertChain))
+               .add(EncodedItem(diceCertChain))
+               .add(std::move(signedData))
+               .encode();
+
+    return ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::security::keymint
diff --git a/ready_se/google/keymint/KM300/HAL/JavacardRemotelyProvisionedComponentDevice.h b/ready_se/google/keymint/KM300/HAL/JavacardRemotelyProvisionedComponentDevice.h
new file mode 100644
index 0000000..5ce8cd7
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/JavacardRemotelyProvisionedComponentDevice.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cppbor.h>
+
+#include <aidl/android/hardware/security/keymint/BnRemotelyProvisionedComponent.h>
+#include <aidl/android/hardware/security/keymint/RpcHardwareInfo.h>
+#include <aidl/android/hardware/security/keymint/SecurityLevel.h>
+
+#include <keymaster/UniquePtr.h>
+#include <keymaster/android_keymaster.h>
+
+#include "CborConverter.h"
+#include "JavacardSecureElement.h"
+
+namespace aidl::android::hardware::security::keymint {
+using ::keymint::javacard::CborConverter;
+using ::keymint::javacard::JavacardSecureElement;
+using ndk::ScopedAStatus;
+using std::shared_ptr;
+
+class JavacardRemotelyProvisionedComponentDevice : public BnRemotelyProvisionedComponent {
+  public:
+    explicit JavacardRemotelyProvisionedComponentDevice(shared_ptr<JavacardSecureElement> card)
+        : card_(card) {}
+
+    virtual ~JavacardRemotelyProvisionedComponentDevice() = default;
+
+    ScopedAStatus getHardwareInfo(RpcHardwareInfo* info) override;
+
+    ScopedAStatus generateEcdsaP256KeyPair(bool testMode, MacedPublicKey* macedPublicKey,
+                                           std::vector<uint8_t>* privateKeyHandle) override;
+
+    ScopedAStatus generateCertificateRequest(bool testMode,
+                                             const std::vector<MacedPublicKey>& keysToSign,
+                                             const std::vector<uint8_t>& endpointEncCertChain,
+                                             const std::vector<uint8_t>& challenge,
+                                             DeviceInfo* deviceInfo, ProtectedData* protectedData,
+                                             std::vector<uint8_t>* keysToSignMac) override;
+
+    ScopedAStatus generateCertificateRequestV2(const std::vector<MacedPublicKey>& keysToSign,
+                                               const std::vector<uint8_t>& challenge,
+                                               std::vector<uint8_t>* csr) override;
+
+  private:
+    ScopedAStatus beginSendData(const std::vector<MacedPublicKey>& keysToSign,
+                                const std::vector<uint8_t>& challenge, DeviceInfo* deviceInfo,
+                                uint32_t* version, std::string* certificateType);
+
+    ScopedAStatus updateMacedKey(const std::vector<MacedPublicKey>& keysToSign,
+                                 cppbor::Array& coseKeys);
+
+    ScopedAStatus finishSendData(std::vector<uint8_t>& coseEncryptProtectedHeader,
+                                 std::vector<uint8_t>& signature, uint32_t& version,
+                                 uint32_t& respFlag);
+
+    ScopedAStatus getResponse(std::vector<uint8_t>& partialCipheredData,
+                              cppbor::Array& recepientStructure, uint32_t& respFlag);
+    ScopedAStatus getDiceCertChain(std::vector<uint8_t>& diceCertChain);
+    ScopedAStatus getUdsCertsChain(std::vector<uint8_t>& udsCertsChain);
+    std::shared_ptr<JavacardSecureElement> card_;
+    CborConverter cbor_;
+};
+
+}  // namespace aidl::android::hardware::security::keymint
diff --git a/ready_se/google/keymint/KM300/HAL/JavacardSecureElement.cpp b/ready_se/google/keymint/KM300/HAL/JavacardSecureElement.cpp
new file mode 100644
index 0000000..7c4f038
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/JavacardSecureElement.cpp
@@ -0,0 +1,157 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "javacard.keymint.device.strongbox-impl"
+#include "JavacardSecureElement.h"
+
+#include <algorithm>
+#include <iostream>
+#include <iterator>
+#include <memory>
+#include <regex.h>
+#include <string>
+#include <vector>
+
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <keymaster/android_keymaster_messages.h>
+
+#include "keymint_utils.h"
+
+namespace keymint::javacard {
+
+keymaster_error_t JavacardSecureElement::initializeJavacard() {
+    Array request;
+    request.add(Uint(getOsVersion()));
+    request.add(Uint(getOsPatchlevel()));
+    request.add(Uint(getVendorPatchlevel()));
+    auto [item, err] = sendRequest(Instruction::INS_INIT_STRONGBOX_CMD, request);
+    return err;
+}
+
+keymaster_error_t JavacardSecureElement::sendEarlyBootEndedEvent(bool eventTriggered) {
+    isEarlyBootEventPending |= eventTriggered;
+    if (!isEarlyBootEventPending) {
+        return KM_ERROR_OK;
+    }
+    auto [item, err] = sendRequest(Instruction::INS_EARLY_BOOT_ENDED_CMD);
+    if (err != KM_ERROR_OK) {
+        // Incase of failure cache the event and send in the next immediate request to Applet.
+        isEarlyBootEventPending = true;
+        return err;
+    }
+    isEarlyBootEventPending = false;
+    return KM_ERROR_OK;
+}
+
+keymaster_error_t JavacardSecureElement::constructApduMessage(Instruction& ins,
+                                                              std::vector<uint8_t>& inputData,
+                                                              std::vector<uint8_t>& apduOut) {
+    apduOut.push_back(static_cast<uint8_t>(APDU_CLS));  // CLS
+    apduOut.push_back(static_cast<uint8_t>(ins));       // INS
+    apduOut.push_back(static_cast<uint8_t>(APDU_P1));   // P1
+    apduOut.push_back(static_cast<uint8_t>(APDU_P2));   // P2
+
+    if (USHRT_MAX >= inputData.size()) {
+        // Send extended length APDU always as response size is not known to HAL.
+        // Case 1: Lc > 0  CLS | INS | P1 | P2 | 00 | 2 bytes of Lc | CommandData | 2 bytes of Le
+        // all set to 00. Case 2: Lc = 0  CLS | INS | P1 | P2 | 3 bytes of Le all set to 00.
+        // Extended length 3 bytes, starts with 0x00
+        apduOut.push_back(static_cast<uint8_t>(0x00));
+        if (inputData.size() > 0) {
+            apduOut.push_back(static_cast<uint8_t>(inputData.size() >> 8));
+            apduOut.push_back(static_cast<uint8_t>(inputData.size() & 0xFF));
+            // Data
+            apduOut.insert(apduOut.end(), inputData.begin(), inputData.end());
+        }
+        // Expected length of output.
+        // Accepting complete length of output every time.
+        apduOut.push_back(static_cast<uint8_t>(0x00));
+        apduOut.push_back(static_cast<uint8_t>(0x00));
+    } else {
+        LOG(ERROR) << "Error in constructApduMessage.";
+        return (KM_ERROR_INVALID_INPUT_LENGTH);
+    }
+    return (KM_ERROR_OK);  // success
+}
+
+keymaster_error_t JavacardSecureElement::sendData(Instruction ins, std::vector<uint8_t>& inData,
+                                                  std::vector<uint8_t>& response) {
+    keymaster_error_t ret = KM_ERROR_UNKNOWN_ERROR;
+    std::vector<uint8_t> apdu;
+
+    ret = constructApduMessage(ins, inData, apdu);
+
+    if (ret != KM_ERROR_OK) {
+        return ret;
+    }
+
+    ret = transport_->sendData(apdu, response);
+    if (ret != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending data in sendData. " << static_cast<int>(ret);
+        return ret;
+    }
+
+    // Response size should be greater than 2. Cbor output data followed by two bytes of APDU
+    // status.
+    if ((response.size() <= 2) || (getApduStatus(response) != APDU_RESP_STATUS_OK)) {
+        LOG(ERROR) << "Response of the sendData is wrong: response size = " << response.size()
+                   << " apdu status = " << getApduStatus(response);
+        return (KM_ERROR_UNKNOWN_ERROR);
+    }
+    // remove the status bytes
+    response.pop_back();
+    response.pop_back();
+    return (KM_ERROR_OK);  // success
+}
+
+std::tuple<std::unique_ptr<Item>, keymaster_error_t>
+JavacardSecureElement::sendRequest(Instruction ins, Array& request) {
+    vector<uint8_t> response;
+    // encode request
+    std::vector<uint8_t> command = request.encode();
+    auto sendError = sendData(ins, command, response);
+    if (sendError != KM_ERROR_OK) {
+        return {unique_ptr<Item>(nullptr), sendError};
+    }
+    // decode the response and send that back
+    return cbor_.decodeData(response);
+}
+
+std::tuple<std::unique_ptr<Item>, keymaster_error_t>
+JavacardSecureElement::sendRequest(Instruction ins, std::vector<uint8_t>& command) {
+    vector<uint8_t> response;
+    auto sendError = sendData(ins, command, response);
+    if (sendError != KM_ERROR_OK) {
+        return {unique_ptr<Item>(nullptr), sendError};
+    }
+    // decode the response and send that back
+    return cbor_.decodeData(response);
+}
+
+std::tuple<std::unique_ptr<Item>, keymaster_error_t>
+JavacardSecureElement::sendRequest(Instruction ins) {
+    vector<uint8_t> response;
+    vector<uint8_t> emptyRequest;
+    auto sendError = sendData(ins, emptyRequest, response);
+    if (sendError != KM_ERROR_OK) {
+        return {unique_ptr<Item>(nullptr), sendError};
+    }
+    // decode the response and send that back
+    return cbor_.decodeData(response);
+}
+
+}  // namespace keymint::javacard
diff --git a/ready_se/google/keymint/KM300/HAL/JavacardSecureElement.h b/ready_se/google/keymint/KM300/HAL/JavacardSecureElement.h
new file mode 100644
index 0000000..8ba0a44
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/JavacardSecureElement.h
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <ITransport.h>
+
+#include "CborConverter.h"
+
+#define APDU_CLS 0x80
+#define APDU_P1 0x60
+#define APDU_P2 0x00
+#define APDU_RESP_STATUS_OK 0x9000
+
+#define KEYMINT_CMD_APDU_START 0x20
+
+namespace keymint::javacard {
+using std::shared_ptr;
+using std::vector;
+
+enum class Instruction {
+    // Keymaster commands
+    INS_GENERATE_KEY_CMD = KEYMINT_CMD_APDU_START + 1,
+    INS_IMPORT_KEY_CMD = KEYMINT_CMD_APDU_START + 2,
+    INS_IMPORT_WRAPPED_KEY_CMD = KEYMINT_CMD_APDU_START + 3,
+    INS_EXPORT_KEY_CMD = KEYMINT_CMD_APDU_START + 4,
+    INS_ATTEST_KEY_CMD = KEYMINT_CMD_APDU_START + 5,
+    INS_UPGRADE_KEY_CMD = KEYMINT_CMD_APDU_START + 6,
+    INS_DELETE_KEY_CMD = KEYMINT_CMD_APDU_START + 7,
+    INS_DELETE_ALL_KEYS_CMD = KEYMINT_CMD_APDU_START + 8,
+    INS_ADD_RNG_ENTROPY_CMD = KEYMINT_CMD_APDU_START + 9,
+    INS_COMPUTE_SHARED_SECRET_CMD = KEYMINT_CMD_APDU_START + 10,
+    INS_DESTROY_ATT_IDS_CMD = KEYMINT_CMD_APDU_START + 11,
+    INS_VERIFY_AUTHORIZATION_CMD = KEYMINT_CMD_APDU_START + 12,
+    INS_GET_SHARED_SECRET_PARAM_CMD = KEYMINT_CMD_APDU_START + 13,
+    INS_GET_KEY_CHARACTERISTICS_CMD = KEYMINT_CMD_APDU_START + 14,
+    INS_GET_HW_INFO_CMD = KEYMINT_CMD_APDU_START + 15,
+    INS_BEGIN_OPERATION_CMD = KEYMINT_CMD_APDU_START + 16,
+    INS_UPDATE_OPERATION_CMD = KEYMINT_CMD_APDU_START + 17,
+    INS_FINISH_OPERATION_CMD = KEYMINT_CMD_APDU_START + 18,
+    INS_ABORT_OPERATION_CMD = KEYMINT_CMD_APDU_START + 19,
+    INS_DEVICE_LOCKED_CMD = KEYMINT_CMD_APDU_START + 20,
+    INS_EARLY_BOOT_ENDED_CMD = KEYMINT_CMD_APDU_START + 21,
+    INS_GET_CERT_CHAIN_CMD = KEYMINT_CMD_APDU_START + 22,
+    INS_UPDATE_AAD_OPERATION_CMD = KEYMINT_CMD_APDU_START + 23,
+    INS_BEGIN_IMPORT_WRAPPED_KEY_CMD = KEYMINT_CMD_APDU_START + 24,
+    INS_FINISH_IMPORT_WRAPPED_KEY_CMD = KEYMINT_CMD_APDU_START + 25,
+    INS_INIT_STRONGBOX_CMD = KEYMINT_CMD_APDU_START + 26,
+    // RKP Commands
+    INS_GET_RKP_HARDWARE_INFO = KEYMINT_CMD_APDU_START + 27,
+    INS_GENERATE_RKP_KEY_CMD = KEYMINT_CMD_APDU_START + 28,
+    INS_BEGIN_SEND_DATA_CMD = KEYMINT_CMD_APDU_START + 29,
+    INS_UPDATE_KEY_CMD = KEYMINT_CMD_APDU_START + 30,
+    INS_UPDATE_EEK_CHAIN_CMD = KEYMINT_CMD_APDU_START + 31,
+    INS_UPDATE_CHALLENGE_CMD = KEYMINT_CMD_APDU_START + 32,
+    INS_FINISH_SEND_DATA_CMD = KEYMINT_CMD_APDU_START + 33,
+    INS_GET_RESPONSE_CMD = KEYMINT_CMD_APDU_START + 34,
+    INS_GET_UDS_CERTS_CMD = KEYMINT_CMD_APDU_START + 35,
+    INS_GET_DICE_CERT_CHAIN_CMD = KEYMINT_CMD_APDU_START + 36,
+    // SE ROT Commands
+    INS_GET_ROT_CHALLENGE_CMD = KEYMINT_CMD_APDU_START + 45,
+    INS_GET_ROT_DATA_CMD = KEYMINT_CMD_APDU_START + 46,
+    INS_SEND_ROT_DATA_CMD = KEYMINT_CMD_APDU_START + 47,
+};
+
+class JavacardSecureElement {
+  public:
+    explicit JavacardSecureElement(shared_ptr<ITransport> transport, uint32_t osVersion,
+                                   uint32_t osPatchLevel, uint32_t vendorPatchLevel)
+        : transport_(transport), osVersion_(osVersion), osPatchLevel_(osPatchLevel),
+          vendorPatchLevel_(vendorPatchLevel), isEarlyBootEventPending(false) {
+        transport_->openConnection();
+    }
+    virtual ~JavacardSecureElement() { transport_->closeConnection(); }
+
+    std::tuple<std::unique_ptr<Item>, keymaster_error_t> sendRequest(Instruction ins,
+                                                                     Array& request);
+    std::tuple<std::unique_ptr<Item>, keymaster_error_t> sendRequest(Instruction ins);
+    std::tuple<std::unique_ptr<Item>, keymaster_error_t> sendRequest(Instruction ins,
+                                                                     std::vector<uint8_t>& command);
+
+    keymaster_error_t sendData(Instruction ins, std::vector<uint8_t>& inData,
+                               std::vector<uint8_t>& response);
+
+    keymaster_error_t constructApduMessage(Instruction& ins, std::vector<uint8_t>& inputData,
+                                           std::vector<uint8_t>& apduOut);
+    keymaster_error_t initializeJavacard();
+    keymaster_error_t sendEarlyBootEndedEvent(bool eventTriggered);
+    inline uint16_t getApduStatus(std::vector<uint8_t>& inputData) {
+        // Last two bytes are the status SW0SW1
+        uint8_t SW0 = inputData.at(inputData.size() - 2);
+        uint8_t SW1 = inputData.at(inputData.size() - 1);
+        return (SW0 << 8 | SW1);
+    }
+
+    shared_ptr<ITransport> transport_;
+    uint32_t osVersion_;
+    uint32_t osPatchLevel_;
+    uint32_t vendorPatchLevel_;
+    bool isEarlyBootEventPending;
+    CborConverter cbor_;
+};
+}  // namespace keymint::javacard
diff --git a/ready_se/google/keymint/KM300/HAL/JavacardSharedSecret.cpp b/ready_se/google/keymint/KM300/HAL/JavacardSharedSecret.cpp
new file mode 100644
index 0000000..c5cf9a2
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/JavacardSharedSecret.cpp
@@ -0,0 +1,61 @@
+#define LOG_TAG "javacard.strongbox.keymint.operation-impl"
+#include "JavacardSharedSecret.h"
+
+#include <android-base/logging.h>
+
+#include <KeyMintUtils.h>
+
+namespace aidl::android::hardware::security::sharedsecret {
+using ::keymint::javacard::Instruction;
+
+ScopedAStatus JavacardSharedSecret::getSharedSecretParameters(SharedSecretParameters* params) {
+    auto error = card_->initializeJavacard();
+    if (error != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in initializing javacard.";
+        return keymint::km_utils::kmError2ScopedAStatus(error);
+    }
+    auto [item, err] = card_->sendRequest(Instruction::INS_GET_SHARED_SECRET_PARAM_CMD);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending in getSharedSecretParameters.";
+        return keymint::km_utils::kmError2ScopedAStatus(err);
+    }
+    auto optSSParams = cbor_.getSharedSecretParameters(item, 1);
+    if (!optSSParams) {
+        LOG(ERROR) << "Error in sending in getSharedSecretParameters.";
+        return keymint::km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    *params = std::move(optSSParams.value());
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus
+JavacardSharedSecret::computeSharedSecret(const std::vector<SharedSecretParameters>& params,
+                                          std::vector<uint8_t>* secret) {
+
+    auto error = card_->sendEarlyBootEndedEvent(false);
+    if (error != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending earlyBoot event javacard.";
+        return keymint::km_utils::kmError2ScopedAStatus(error);
+    }
+    error = card_->initializeJavacard();
+    if (error != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in initializing javacard.";
+        return keymint::km_utils::kmError2ScopedAStatus(error);
+    }
+    cppbor::Array request;
+    cbor_.addSharedSecretParameters(request, params);
+    auto [item, err] = card_->sendRequest(Instruction::INS_COMPUTE_SHARED_SECRET_CMD, request);
+    if (err != KM_ERROR_OK) {
+        LOG(ERROR) << "Error in sending in computeSharedSecret.";
+        return keymint::km_utils::kmError2ScopedAStatus(err);
+    }
+    auto optSecret = cbor_.getByteArrayVec(item, 1);
+    if (!optSecret) {
+        LOG(ERROR) << "Error in decoding the response in computeSharedSecret.";
+        return keymint::km_utils::kmError2ScopedAStatus(KM_ERROR_UNKNOWN_ERROR);
+    }
+    *secret = std::move(optSecret.value());
+    return ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::security::sharedsecret
diff --git a/ready_se/google/keymint/KM300/HAL/JavacardSharedSecret.h b/ready_se/google/keymint/KM300/HAL/JavacardSharedSecret.h
new file mode 100644
index 0000000..340853a
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/JavacardSharedSecret.h
@@ -0,0 +1,34 @@
+#pragma once
+
+#include <memory>
+#include <vector>
+
+#include <aidl/android/hardware/security/sharedsecret/BnSharedSecret.h>
+#include <aidl/android/hardware/security/sharedsecret/SharedSecretParameters.h>
+
+#include "CborConverter.h"
+#include "JavacardSecureElement.h"
+
+namespace aidl::android::hardware::security::sharedsecret {
+using ::keymint::javacard::CborConverter;
+using ::keymint::javacard::JavacardSecureElement;
+using ndk::ScopedAStatus;
+using std::shared_ptr;
+using std::vector;
+
+class JavacardSharedSecret : public BnSharedSecret {
+  public:
+    explicit JavacardSharedSecret(shared_ptr<JavacardSecureElement> card) : card_(card) {}
+    virtual ~JavacardSharedSecret() {}
+
+    ScopedAStatus getSharedSecretParameters(SharedSecretParameters* params) override;
+
+    ScopedAStatus computeSharedSecret(const std::vector<SharedSecretParameters>& params,
+                                      std::vector<uint8_t>* secret) override;
+
+  private:
+    shared_ptr<JavacardSecureElement> card_;
+    CborConverter cbor_;
+};
+
+}  // namespace aidl::android::hardware::security::sharedsecret
diff --git a/ready_se/google/keymint/KM300/HAL/LICENSE b/ready_se/google/keymint/KM300/HAL/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/LICENSE
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
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+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+
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+
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+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
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+   2. Grant of Copyright License. Subject to the terms and conditions of
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
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+   Licensed under the Apache License, Version 2.0 (the "License");
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+
+   Unless required by applicable law or agreed to in writing, software
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diff --git a/ready_se/google/keymint/KM300/HAL/METADATA b/ready_se/google/keymint/KM300/HAL/METADATA
new file mode 100644
index 0000000..d97975c
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/METADATA
@@ -0,0 +1,3 @@
+third_party {
+  license_type: NOTICE
+}
diff --git a/ready_se/google/keymint/KM300/HAL/OWNERS b/ready_se/google/keymint/KM300/HAL/OWNERS
new file mode 100644
index 0000000..0bd972b
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/OWNERS
@@ -0,0 +1,3 @@
+pathakc@google.com
+subrahmanyaman@google.com
+avinashh@google.com
diff --git a/ready_se/google/keymint/KM300/HAL/android.hardware.hardware_keystore.jc-strongbox-keymint3.xml b/ready_se/google/keymint/KM300/HAL/android.hardware.hardware_keystore.jc-strongbox-keymint3.xml
new file mode 100644
index 0000000..ca49e71
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/android.hardware.hardware_keystore.jc-strongbox-keymint3.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2018 The Android Open Source Project
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+          http://www.apache.org/licenses/LICENSE-2.0
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<!-- Feature for devices with Keymaster in StrongBox. -->
+<permissions>
+  <feature name="android.hardware.strongbox_keystore" version="300"/>
+  <feature name="android.hardware.keystore.app_attest_key" />
+</permissions>
diff --git a/ready_se/google/keymint/KM300/HAL/android.hardware.security.keymint3-service.strongbox.rc b/ready_se/google/keymint/KM300/HAL/android.hardware.security.keymint3-service.strongbox.rc
new file mode 100644
index 0000000..e1c1494
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/android.hardware.security.keymint3-service.strongbox.rc
@@ -0,0 +1,3 @@
+service vendor.keymint-strongbox /vendor/bin/hw/android.hardware.security.keymint3-service.strongbox
+    class early_hal
+    user jc_strongbox
diff --git a/ready_se/google/keymint/KM300/HAL/android.hardware.security.keymint3-service.strongbox.xml b/ready_se/google/keymint/KM300/HAL/android.hardware.security.keymint3-service.strongbox.xml
new file mode 100644
index 0000000..481f028
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/android.hardware.security.keymint3-service.strongbox.xml
@@ -0,0 +1,12 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.security.keymint</name>
+        <version>3</version>
+        <fqname>IKeyMintDevice/strongbox</fqname>
+    </hal>
+   <hal format="aidl">
+        <name>android.hardware.security.keymint</name>
+        <version>3</version>
+        <fqname>IRemotelyProvisionedComponent/strongbox</fqname>
+    </hal>
+</manifest>
diff --git a/ready_se/google/keymint/KM300/HAL/android.hardware.security.sharedsecret3-service.strongbox.xml b/ready_se/google/keymint/KM300/HAL/android.hardware.security.sharedsecret3-service.strongbox.xml
new file mode 100644
index 0000000..5492100
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/android.hardware.security.sharedsecret3-service.strongbox.xml
@@ -0,0 +1,6 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.security.sharedsecret</name>
+        <fqname>ISharedSecret/strongbox</fqname>
+    </hal>
+</manifest>
diff --git a/ready_se/google/keymint/KM300/HAL/keymint_utils.cpp b/ready_se/google/keymint/KM300/HAL/keymint_utils.cpp
new file mode 100644
index 0000000..f613eda
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/keymint_utils.cpp
@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "keymint_utils.h"
+
+#include <regex.h>
+
+#include <android-base/properties.h>
+
+namespace keymint::javacard {
+
+namespace {
+
+constexpr char kPlatformVersionProp[] = "ro.build.version.release";
+constexpr char kPlatformVersionRegex[] = "^([0-9]{1,2})(\\.([0-9]{1,2}))?(\\.([0-9]{1,2}))?";
+constexpr size_t kMajorVersionMatch = 1;
+constexpr size_t kMinorVersionMatch = 3;
+constexpr size_t kSubminorVersionMatch = 5;
+constexpr size_t kPlatformVersionMatchCount = kSubminorVersionMatch + 1;
+
+constexpr char kPlatformPatchlevelProp[] = "ro.build.version.security_patch";
+constexpr char kVendorPatchlevelProp[] = "ro.vendor.build.security_patch";
+constexpr char kPatchlevelRegex[] = "^([0-9]{4})-([0-9]{2})-([0-9]{2})$";
+constexpr size_t kYearMatch = 1;
+constexpr size_t kMonthMatch = 2;
+constexpr size_t kDayMatch = 3;
+constexpr size_t kPatchlevelMatchCount = kDayMatch + 1;
+
+uint32_t match_to_uint32(const char* expression, const regmatch_t& match) {
+    if (match.rm_so == -1) return 0;
+
+    size_t len = match.rm_eo - match.rm_so;
+    std::string s(expression + match.rm_so, len);
+    return std::stoul(s);
+}
+
+std::string wait_and_get_property(const char* prop) {
+    std::string prop_value;
+    while (!::android::base::WaitForPropertyCreation(prop))
+        ;
+    prop_value = ::android::base::GetProperty(prop, "" /* default */);
+    return prop_value;
+}
+
+uint32_t getOsVersion(const char* version_str) {
+    regex_t regex;
+    if (regcomp(&regex, kPlatformVersionRegex, REG_EXTENDED)) {
+        return 0;
+    }
+
+    regmatch_t matches[kPlatformVersionMatchCount];
+    int not_match =
+        regexec(&regex, version_str, kPlatformVersionMatchCount, matches, 0 /* flags */);
+    regfree(&regex);
+    if (not_match) {
+        return 0;
+    }
+
+    uint32_t major = match_to_uint32(version_str, matches[kMajorVersionMatch]);
+    uint32_t minor = match_to_uint32(version_str, matches[kMinorVersionMatch]);
+    uint32_t subminor = match_to_uint32(version_str, matches[kSubminorVersionMatch]);
+
+    return (major * 100 + minor) * 100 + subminor;
+}
+
+enum class PatchlevelOutput { kYearMonthDay, kYearMonth };
+
+uint32_t getPatchlevel(const char* patchlevel_str, PatchlevelOutput detail) {
+    regex_t regex;
+    if (regcomp(&regex, kPatchlevelRegex, REG_EXTENDED) != 0) {
+        return 0;
+    }
+
+    regmatch_t matches[kPatchlevelMatchCount];
+    int not_match = regexec(&regex, patchlevel_str, kPatchlevelMatchCount, matches, 0 /* flags */);
+    regfree(&regex);
+    if (not_match) {
+        return 0;
+    }
+
+    uint32_t year = match_to_uint32(patchlevel_str, matches[kYearMatch]);
+    uint32_t month = match_to_uint32(patchlevel_str, matches[kMonthMatch]);
+
+    if (month < 1 || month > 12) {
+        return 0;
+    }
+
+    switch (detail) {
+    case PatchlevelOutput::kYearMonthDay: {
+        uint32_t day = match_to_uint32(patchlevel_str, matches[kDayMatch]);
+        if (day < 1 || day > 31) {
+            return 0;
+        }
+        return year * 10000 + month * 100 + day;
+    }
+    case PatchlevelOutput::kYearMonth:
+        return year * 100 + month;
+    }
+}
+
+}  // anonymous namespace
+
+uint32_t getOsVersion() {
+    std::string version = wait_and_get_property(kPlatformVersionProp);
+    return getOsVersion(version.c_str());
+}
+
+uint32_t getOsPatchlevel() {
+    std::string patchlevel = wait_and_get_property(kPlatformPatchlevelProp);
+    return getPatchlevel(patchlevel.c_str(), PatchlevelOutput::kYearMonth);
+}
+
+uint32_t getVendorPatchlevel() {
+    std::string patchlevel = wait_and_get_property(kVendorPatchlevelProp);
+    return getPatchlevel(patchlevel.c_str(), PatchlevelOutput::kYearMonthDay);
+}
+
+}  // namespace keymint::javacard
diff --git a/ready_se/google/keymint/KM300/HAL/keymint_utils.h b/ready_se/google/keymint/KM300/HAL/keymint_utils.h
new file mode 100644
index 0000000..65cda63
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/keymint_utils.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+#include <vector>
+
+// #include <aidl/android/hardware/security/keymint/HardwareAuthToken.h>
+
+// namespace aidl::android::hardware::security::keymint {
+namespace keymint::javacard {
+
+using std::vector;
+
+inline static std::vector<uint8_t> blob2vector(const uint8_t* data, const size_t length) {
+    std::vector<uint8_t> result(data, data + length);
+    return result;
+}
+
+inline static std::vector<uint8_t> blob2vector(const std::string& value) {
+    vector<uint8_t> result(reinterpret_cast<const uint8_t*>(value.data()),
+                           reinterpret_cast<const uint8_t*>(value.data()) + value.size());
+    return result;
+}
+
+// HardwareAuthToken vector2AuthToken(const vector<uint8_t>& buffer);
+// vector<uint8_t> authToken2vector(const HardwareAuthToken& token);
+
+uint32_t getOsVersion();
+uint32_t getOsPatchlevel();
+uint32_t getVendorPatchlevel();
+
+}  // namespace keymint::javacard
diff --git a/ready_se/google/keymint/KM300/HAL/service.cpp b/ready_se/google/keymint/KM300/HAL/service.cpp
new file mode 100644
index 0000000..e83ee3d
--- /dev/null
+++ b/ready_se/google/keymint/KM300/HAL/service.cpp
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "javacard.strongbox-service"
+
+#include <aidl/android/hardware/security/keymint/SecurityLevel.h>
+
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+
+#include "JavacardKeyMintDevice.h"
+#include "JavacardRemotelyProvisionedComponentDevice.h"
+#include "JavacardSecureElement.h"
+#include "JavacardSharedSecret.h"
+#include "OmapiTransport.h"
+#include "SocketTransport.h"
+#include "keymint_utils.h"
+
+using aidl::android::hardware::security::keymint::JavacardKeyMintDevice;
+using aidl::android::hardware::security::keymint::JavacardRemotelyProvisionedComponentDevice;
+using aidl::android::hardware::security::keymint::SecurityLevel;
+using aidl::android::hardware::security::sharedsecret::JavacardSharedSecret;
+using keymint::javacard::getOsPatchlevel;
+using keymint::javacard::getOsVersion;
+using keymint::javacard::getVendorPatchlevel;
+using keymint::javacard::ITransport;
+using keymint::javacard::JavacardSecureElement;
+using keymint::javacard::OmapiTransport;
+using keymint::javacard::SocketTransport;
+
+#define PROP_BUILD_QEMU "ro.kernel.qemu"
+#define PROP_BUILD_FINGERPRINT "ro.build.fingerprint"
+// Cuttlefish build fingerprint substring.
+#define CUTTLEFISH_FINGERPRINT_SS "aosp_cf_"
+
+template <typename T, class... Args> std::shared_ptr<T> addService(Args&&... args) {
+    std::shared_ptr<T> ser = ndk::SharedRefBase::make<T>(std::forward<Args>(args)...);
+    auto instanceName = std::string(T::descriptor) + "/strongbox";
+    LOG(INFO) << "adding javacard strongbox service instance: " << instanceName;
+    binder_status_t status =
+        AServiceManager_addService(ser->asBinder().get(), instanceName.c_str());
+    CHECK(status == STATUS_OK);
+    return ser;
+}
+
+std::shared_ptr<ITransport> getTransportInstance() {
+    bool isEmulator = false;
+    // Check if the current build is for emulator or device.
+    isEmulator = android::base::GetBoolProperty(PROP_BUILD_QEMU, false);
+    if (!isEmulator) {
+        std::string fingerprint = android::base::GetProperty(PROP_BUILD_FINGERPRINT, "");
+        if (!fingerprint.empty()) {
+            if (fingerprint.find(CUTTLEFISH_FINGERPRINT_SS, 0) != std::string::npos) {
+                isEmulator = true;
+            }
+        }
+    }
+
+    if (!isEmulator) {
+        return std::make_shared<OmapiTransport>();
+    } else {
+        return std::make_shared<SocketTransport>();
+    }
+}
+
+int main() {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+    // Javacard Secure Element
+    std::shared_ptr<JavacardSecureElement> card = std::make_shared<JavacardSecureElement>(
+        getTransportInstance(), getOsVersion(), getOsPatchlevel(), getVendorPatchlevel());
+    // Add Keymint Service
+    addService<JavacardKeyMintDevice>(card);
+    // Add Shared Secret Service
+    addService<JavacardSharedSecret>(card);
+    // Add Remotely Provisioned Component Service
+    addService<JavacardRemotelyProvisionedComponentDevice>(card);
+
+    ABinderProcess_joinThreadPool();
+    return EXIT_FAILURE;  // should not reach
+}