diff options
Diffstat (limited to 'crypto/symmetric_key_nss.cc')
-rw-r--r-- | crypto/symmetric_key_nss.cc | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/crypto/symmetric_key_nss.cc b/crypto/symmetric_key_nss.cc deleted file mode 100644 index 95ca9bd073..0000000000 --- a/crypto/symmetric_key_nss.cc +++ /dev/null @@ -1,149 +0,0 @@ -// Copyright (c) 2012 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -#include "crypto/symmetric_key.h" - -#include <nss.h> -#include <pk11pub.h> - -#include "base/logging.h" -#include "crypto/nss_util.h" - -namespace crypto { - -SymmetricKey::~SymmetricKey() {} - -// static -SymmetricKey* SymmetricKey::GenerateRandomKey(Algorithm algorithm, - size_t key_size_in_bits) { - DCHECK_EQ(AES, algorithm); - - EnsureNSSInit(); - - // Whitelist supported key sizes to avoid accidentaly relying on - // algorithms available in NSS but not BoringSSL and vice - // versa. Note that BoringSSL does not support AES-192. - if (key_size_in_bits != 128 && key_size_in_bits != 256) - return NULL; - - ScopedPK11Slot slot(PK11_GetInternalSlot()); - if (!slot.get()) - return NULL; - - PK11SymKey* sym_key = PK11_KeyGen(slot.get(), CKM_AES_KEY_GEN, NULL, - key_size_in_bits / 8, NULL); - if (!sym_key) - return NULL; - - return new SymmetricKey(sym_key); -} - -// static -SymmetricKey* SymmetricKey::DeriveKeyFromPassword(Algorithm algorithm, - const std::string& password, - const std::string& salt, - size_t iterations, - size_t key_size_in_bits) { - EnsureNSSInit(); - if (salt.empty() || iterations == 0 || key_size_in_bits == 0) - return NULL; - - if (algorithm == AES) { - // Whitelist supported key sizes to avoid accidentaly relying on - // algorithms available in NSS but not BoringSSL and vice - // versa. Note that BoringSSL does not support AES-192. - if (key_size_in_bits != 128 && key_size_in_bits != 256) - return NULL; - } - - SECItem password_item; - password_item.type = siBuffer; - password_item.data = reinterpret_cast<unsigned char*>( - const_cast<char *>(password.data())); - password_item.len = password.size(); - - SECItem salt_item; - salt_item.type = siBuffer; - salt_item.data = reinterpret_cast<unsigned char*>( - const_cast<char *>(salt.data())); - salt_item.len = salt.size(); - - SECOidTag cipher_algorithm = - algorithm == AES ? SEC_OID_AES_256_CBC : SEC_OID_HMAC_SHA1; - ScopedSECAlgorithmID alg_id(PK11_CreatePBEV2AlgorithmID(SEC_OID_PKCS5_PBKDF2, - cipher_algorithm, - SEC_OID_HMAC_SHA1, - key_size_in_bits / 8, - iterations, - &salt_item)); - if (!alg_id.get()) - return NULL; - - ScopedPK11Slot slot(PK11_GetInternalSlot()); - if (!slot.get()) - return NULL; - - PK11SymKey* sym_key = PK11_PBEKeyGen(slot.get(), alg_id.get(), &password_item, - PR_FALSE, NULL); - if (!sym_key) - return NULL; - - return new SymmetricKey(sym_key); -} - -// static -SymmetricKey* SymmetricKey::Import(Algorithm algorithm, - const std::string& raw_key) { - EnsureNSSInit(); - - if (algorithm == AES) { - // Whitelist supported key sizes to avoid accidentaly relying on - // algorithms available in NSS but not BoringSSL and vice - // versa. Note that BoringSSL does not support AES-192. - if (raw_key.size() != 128/8 && raw_key.size() != 256/8) - return NULL; - } - - CK_MECHANISM_TYPE cipher = - algorithm == AES ? CKM_AES_CBC : CKM_SHA_1_HMAC; - - SECItem key_item; - key_item.type = siBuffer; - key_item.data = reinterpret_cast<unsigned char*>( - const_cast<char *>(raw_key.data())); - key_item.len = raw_key.size(); - - ScopedPK11Slot slot(PK11_GetInternalSlot()); - if (!slot.get()) - return NULL; - - // The exact value of the |origin| argument doesn't matter to NSS as long as - // it's not PK11_OriginFortezzaHack, so we pass PK11_OriginUnwrap as a - // placeholder. - PK11SymKey* sym_key = PK11_ImportSymKey(slot.get(), cipher, PK11_OriginUnwrap, - CKA_ENCRYPT, &key_item, NULL); - if (!sym_key) - return NULL; - - return new SymmetricKey(sym_key); -} - -bool SymmetricKey::GetRawKey(std::string* raw_key) { - SECStatus rv = PK11_ExtractKeyValue(key_.get()); - if (SECSuccess != rv) - return false; - - SECItem* key_item = PK11_GetKeyData(key_.get()); - if (!key_item) - return false; - - raw_key->assign(reinterpret_cast<char*>(key_item->data), key_item->len); - return true; -} - -SymmetricKey::SymmetricKey(PK11SymKey* key) : key_(key) { - DCHECK(key); -} - -} // namespace crypto |