From b97b7c39adea473ec093d0cd1208370e4de7930f Mon Sep 17 00:00:00 2001
From: Kenny Root <kroot@google.com>
Date: Thu, 13 Jun 2013 16:52:22 -0700
Subject: Add scrypt unit tests

Make sure our scrypt library is passing the test vectors provided at:
http://tools.ietf.org/html/draft-josefsson-scrypt-kdf-00#page-11

This will allow us to substitute in new Salsa20/8, PBKDF2, etc
implementations that are faster without breaking compatibility.

Change-Id: I89024b637e0075e5018526e4147148e6fc8e4d96
---
 Android.mk            |  2 ++
 tests/Android.mk      | 25 +++++++++++++++++
 tests/scrypt_test.cpp | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 105 insertions(+)
 create mode 100644 tests/Android.mk
 create mode 100644 tests/scrypt_test.cpp

diff --git a/Android.mk b/Android.mk
index 4920d2d..7fa96d0 100644
--- a/Android.mk
+++ b/Android.mk
@@ -9,3 +9,5 @@ LOCAL_PATH := $(call my-dir)
 # that import_openssl.sh import won't remove them.
 include $(LOCAL_PATH)/build-config.mk
 include $(LOCAL_PATH)/Scrypt.mk
+
+include $(call all-named-subdir-makefiles,tests)
diff --git a/tests/Android.mk b/tests/Android.mk
new file mode 100644
index 0000000..b25e1c4
--- /dev/null
+++ b/tests/Android.mk
@@ -0,0 +1,25 @@
+# Build the scrypt unit tests
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
+
+LOCAL_SRC_FILES:= \
+    scrypt_test.cpp
+
+LOCAL_C_INCLUDES := \
+    external/gtest/include \
+    external/scrypt/lib/crypto
+
+LOCAL_SHARED_LIBRARIES := \
+    libcrypto
+
+LOCAL_STATIC_LIBRARIES := \
+    libscrypt_static \
+    libgtest \
+    libgtest_main
+
+LOCAL_MODULE := scrypt_test
+
+include $(BUILD_NATIVE_TEST)
diff --git a/tests/scrypt_test.cpp b/tests/scrypt_test.cpp
new file mode 100644
index 0000000..28334d6
--- /dev/null
+++ b/tests/scrypt_test.cpp
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2013 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 "scrypt_test"
+#include <utils/Log.h>
+#include <utils/UniquePtr.h>
+
+#include <gtest/gtest.h>
+
+#include <fstream>
+#include <iostream>
+
+extern "C" {
+#include <crypto_scrypt.h>
+}
+
+namespace android {
+
+typedef struct scrypt_test_setting_t {
+        const char *pw, *salt;
+        uint32_t Nfactor, rfactor, pfactor;
+} scrypt_test_setting;
+
+static const scrypt_test_setting post_settings[] = {
+        {"", "", 16, 1, 1},
+        {"password", "NaCl", 1024, 8, 16},
+        {"pleaseletmein", "SodiumChloride", 16384, 8, 1},
+        {0, 0, 0, 0, 0}
+};
+
+static const uint8_t post_vectors[][64] = {
+        {0x77,0xd6,0x57,0x62,0x38,0x65,0x7b,0x20,0x3b,0x19,0xca,0x42,0xc1,0x8a,0x04,0x97,
+         0xf1,0x6b,0x48,0x44,0xe3,0x07,0x4a,0xe8,0xdf,0xdf,0xfa,0x3f,0xed,0xe2,0x14,0x42,
+         0xfc,0xd0,0x06,0x9d,0xed,0x09,0x48,0xf8,0x32,0x6a,0x75,0x3a,0x0f,0xc8,0x1f,0x17,
+         0xe8,0xd3,0xe0,0xfb,0x2e,0x0d,0x36,0x28,0xcf,0x35,0xe2,0x0c,0x38,0xd1,0x89,0x06},
+        {0xfd,0xba,0xbe,0x1c,0x9d,0x34,0x72,0x00,0x78,0x56,0xe7,0x19,0x0d,0x01,0xe9,0xfe,
+         0x7c,0x6a,0xd7,0xcb,0xc8,0x23,0x78,0x30,0xe7,0x73,0x76,0x63,0x4b,0x37,0x31,0x62,
+         0x2e,0xaf,0x30,0xd9,0x2e,0x22,0xa3,0x88,0x6f,0xf1,0x09,0x27,0x9d,0x98,0x30,0xda,
+         0xc7,0x27,0xaf,0xb9,0x4a,0x83,0xee,0x6d,0x83,0x60,0xcb,0xdf,0xa2,0xcc,0x06,0x40},
+        {0x70,0x23,0xbd,0xcb,0x3a,0xfd,0x73,0x48,0x46,0x1c,0x06,0xcd,0x81,0xfd,0x38,0xeb,
+         0xfd,0xa8,0xfb,0xba,0x90,0x4f,0x8e,0x3e,0xa9,0xb5,0x43,0xf6,0x54,0x5d,0xa1,0xf2,
+         0xd5,0x43,0x29,0x55,0x61,0x3f,0x0f,0xcf,0x62,0xd4,0x97,0x05,0x24,0x2a,0x9a,0xf9,
+         0xe6,0x1e,0x85,0xdc,0x0d,0x65,0x1e,0x40,0xdf,0xcf,0x01,0x7b,0x45,0x57,0x58,0x87},
+};
+
+class ScryptTest : public ::testing::Test {
+};
+
+TEST_F(ScryptTest, TestVectors) {
+    int i;
+
+    for (i = 0; post_settings[i].pw != NULL; i++) {
+        uint8_t output[64];
+
+        scrypt_test_setting_t s = post_settings[i];
+        ASSERT_EQ(0,
+                crypto_scrypt((const uint8_t*) s.pw, strlen(s.pw), (const uint8_t*) s.salt,
+                        strlen(s.salt), s.Nfactor, s.rfactor, s.pfactor, output, sizeof(output)))
+                << "scrypt call should succeed for " << i << "; error=" << strerror(errno);
+        ASSERT_EQ(0, memcmp(post_vectors[i], output, sizeof(output)))
+                << "Should match expected output";
+    }
+}
+
+}
-- 
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