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Diffstat (limited to 'security/nss/gtests/freebl_gtest/cmac_unittests.cc')
| -rw-r--r-- | security/nss/gtests/freebl_gtest/cmac_unittests.cc | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/security/nss/gtests/freebl_gtest/cmac_unittests.cc b/security/nss/gtests/freebl_gtest/cmac_unittests.cc new file mode 100644 index 0000000000..40088dcaf1 --- /dev/null +++ b/security/nss/gtests/freebl_gtest/cmac_unittests.cc @@ -0,0 +1,187 @@ +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this file, +// You can obtain one at http://mozilla.org/MPL/2.0/. + +#include "gtest/gtest.h" + +#include <stdint.h> +#include <memory> + +#include "blapi.h" +#include "secitem.h" +#include "freebl_scoped_ptrs.h" + +class CmacAesTest : public ::testing::Test { + protected: + bool Compare(const uint8_t *actual, const uint8_t *expected, + unsigned int length) { + return strncmp((const char *)actual, (const char *)expected, length) == 0; + } +}; + +TEST_F(CmacAesTest, CreateInvalidSize) { + uint8_t key[1] = {0x00}; + ScopedCMACContext ctx(CMAC_Create(CMAC_AES, key, sizeof(key))); + ASSERT_EQ(ctx, nullptr); +} + +TEST_F(CmacAesTest, CreateRightSize) { + uint8_t *key = PORT_NewArray(uint8_t, AES_128_KEY_LENGTH); + ScopedCMACContext ctx(CMAC_Create(CMAC_AES, key, AES_128_KEY_LENGTH)); + + ASSERT_NE(ctx, nullptr); + PORT_Free(key); +} + +// The following tests were taken from NIST's Cryptographic Standards and +// Guidelines page for AES-CMAC Examples with Intermediate Values. These same +// test vectors for AES-128 can be found in RFC 4493, Section 4. + +static const uint8_t kNistKeys[][AES_256_KEY_LENGTH] = { + {0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, + 0x88, 0x09, 0xCF, 0x4F, 0x3C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, + {0x8E, 0x73, 0xB0, 0xF7, 0xDA, 0x0E, 0x64, 0x52, 0xC8, 0x10, 0xF3, + 0x2B, 0x80, 0x90, 0x79, 0xE5, 0x62, 0xF8, 0xEA, 0xD2, 0x52, 0x2C, + 0x6B, 0x7B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, + {0x60, 0x3D, 0xEB, 0x10, 0x15, 0xCA, 0x71, 0xBE, 0x2B, 0x73, 0xAE, + 0xF0, 0x85, 0x7D, 0x77, 0x81, 0x1F, 0x35, 0x2C, 0x07, 0x3B, 0x61, + 0x08, 0xD7, 0x2D, 0x98, 0x10, 0xA3, 0x09, 0x14, 0xDF, 0xF4}}; +static const size_t kNistKeyLengthsCount = PR_ARRAY_SIZE(kNistKeys); +static const unsigned int kNistKeyLengths[kNistKeyLengthsCount] = { + AES_128_KEY_LENGTH, AES_192_KEY_LENGTH, AES_256_KEY_LENGTH}; + +static const uint8_t kNistPlaintext[64] = { + 0x6B, 0xC1, 0xBE, 0xE2, 0x2E, 0x40, 0x9F, 0x96, 0xE9, 0x3D, 0x7E, + 0x11, 0x73, 0x93, 0x17, 0x2A, 0xAE, 0x2D, 0x8A, 0x57, 0x1E, 0x03, + 0xAC, 0x9C, 0x9E, 0xB7, 0x6F, 0xAC, 0x45, 0xAF, 0x8E, 0x51, 0x30, + 0xC8, 0x1C, 0x46, 0xA3, 0x5C, 0xE4, 0x11, 0xE5, 0xFB, 0xC1, 0x19, + 0x1A, 0x0A, 0x52, 0xEF, 0xF6, 0x9F, 0x24, 0x45, 0xDF, 0x4F, 0x9B, + 0x17, 0xAD, 0x2B, 0x41, 0x7B, 0xE6, 0x6C, 0x37, 0x10}; +static const unsigned int kNistPlaintextLengths[] = {0, 16, 20, 64}; +static const size_t kNistPlaintextLengthsCount = + PR_ARRAY_SIZE(kNistPlaintextLengths); + +// This table contains the result of a CMAC over kNistPlaintext using keys from +// kNistKeys. For each key, there are kNistPlaintextLengthsCount answers, all +// listed one after the other as the input is truncated to the different sizes +// in kNistPlaintextLengths. +static const uint8_t kNistKnown[][AES_BLOCK_SIZE] = { + {0xBB, 0x1D, 0x69, 0x29, 0xE9, 0x59, 0x37, 0x28, 0x7F, 0xA3, 0x7D, 0x12, + 0x9B, 0x75, 0x67, 0x46}, + {0x07, 0x0A, 0x16, 0xB4, 0x6B, 0x4D, 0x41, 0x44, 0xF7, 0x9B, 0xDD, 0x9D, + 0xD0, 0x4A, 0x28, 0x7C}, + {0x7D, 0x85, 0x44, 0x9E, 0xA6, 0xEA, 0x19, 0xC8, 0x23, 0xA7, 0xBF, 0x78, + 0x83, 0x7D, 0xFA, 0xDE}, + {0x51, 0xF0, 0xBE, 0xBF, 0x7E, 0x3B, 0x9D, 0x92, 0xFC, 0x49, 0x74, 0x17, + 0x79, 0x36, 0x3C, 0xFE}, + {0xD1, 0x7D, 0xDF, 0x46, 0xAD, 0xAA, 0xCD, 0xE5, 0x31, 0xCA, 0xC4, 0x83, + 0xDE, 0x7A, 0x93, 0x67}, + {0x9E, 0x99, 0xA7, 0xBF, 0x31, 0xE7, 0x10, 0x90, 0x06, 0x62, 0xF6, 0x5E, + 0x61, 0x7C, 0x51, 0x84}, + {0x3D, 0x75, 0xC1, 0x94, 0xED, 0x96, 0x07, 0x04, 0x44, 0xA9, 0xFA, 0x7E, + 0xC7, 0x40, 0xEC, 0xF8}, + {0xA1, 0xD5, 0xDF, 0x0E, 0xED, 0x79, 0x0F, 0x79, 0x4D, 0x77, 0x58, 0x96, + 0x59, 0xF3, 0x9A, 0x11}, + {0x02, 0x89, 0x62, 0xF6, 0x1B, 0x7B, 0xF8, 0x9E, 0xFC, 0x6B, 0x55, 0x1F, + 0x46, 0x67, 0xD9, 0x83}, + {0x28, 0xA7, 0x02, 0x3F, 0x45, 0x2E, 0x8F, 0x82, 0xBD, 0x4B, 0xF2, 0x8D, + 0x8C, 0x37, 0xC3, 0x5C}, + {0x15, 0x67, 0x27, 0xDC, 0x08, 0x78, 0x94, 0x4A, 0x02, 0x3C, 0x1F, 0xE0, + 0x3B, 0xAD, 0x6D, 0x93}, + {0xE1, 0x99, 0x21, 0x90, 0x54, 0x9F, 0x6E, 0xD5, 0x69, 0x6A, 0x2C, 0x05, + 0x6C, 0x31, 0x54, 0x10}}; +PR_STATIC_ASSERT(PR_ARRAY_SIZE(kNistKnown) == + kNistKeyLengthsCount * kNistPlaintextLengthsCount); + +TEST_F(CmacAesTest, AesNistAligned) { + for (unsigned int key_index = 0; key_index < kNistKeyLengthsCount; + key_index++) { + ScopedCMACContext ctx(CMAC_Create(CMAC_AES, kNistKeys[key_index], + kNistKeyLengths[key_index])); + ASSERT_NE(ctx, nullptr); + + for (unsigned int plaintext_index = 0; + plaintext_index < kNistPlaintextLengthsCount; plaintext_index++) { + CMAC_Begin(ctx.get()); + + unsigned int known_index = + (key_index * kNistPlaintextLengthsCount) + plaintext_index; + CMAC_Update(ctx.get(), kNistPlaintext, + kNistPlaintextLengths[plaintext_index]); + + uint8_t output[AES_BLOCK_SIZE]; + CMAC_Finish(ctx.get(), output, NULL, AES_BLOCK_SIZE); + + ASSERT_TRUE(Compare(output, kNistKnown[known_index], AES_BLOCK_SIZE)); + } + } +} + +TEST_F(CmacAesTest, AesNistUnaligned) { + for (unsigned int key_index = 0; key_index < kNistKeyLengthsCount; + key_index++) { + unsigned int key_length = kNistKeyLengths[key_index]; + ScopedCMACContext ctx( + CMAC_Create(CMAC_AES, kNistKeys[key_index], key_length)); + ASSERT_NE(ctx, nullptr); + + // Skip the zero-length test. + for (unsigned int plaintext_index = 1; + plaintext_index < kNistPlaintextLengthsCount; plaintext_index++) { + unsigned int known_index = + (key_index * kNistPlaintextLengthsCount) + plaintext_index; + unsigned int plaintext_length = kNistPlaintextLengths[plaintext_index]; + + // Test all possible offsets and make sure that misaligned updates + // produce the desired result. That is, do two updates: + // 0 ... offset + // offset ... len - offset + // and ensure the result is the same as doing one update. + for (unsigned int offset = 1; offset < plaintext_length; offset++) { + CMAC_Begin(ctx.get()); + + CMAC_Update(ctx.get(), kNistPlaintext, offset); + CMAC_Update(ctx.get(), kNistPlaintext + offset, + plaintext_length - offset); + + uint8_t output[AES_BLOCK_SIZE]; + CMAC_Finish(ctx.get(), output, NULL, AES_BLOCK_SIZE); + + ASSERT_TRUE(Compare(output, kNistKnown[known_index], AES_BLOCK_SIZE)); + } + } + } +} + +TEST_F(CmacAesTest, AesNistTruncated) { + for (unsigned int key_index = 0; key_index < kNistKeyLengthsCount; + key_index++) { + unsigned int key_length = kNistKeyLengths[key_index]; + ScopedCMACContext ctx( + CMAC_Create(CMAC_AES, kNistKeys[key_index], key_length)); + ASSERT_TRUE(ctx != nullptr); + + // Skip the zero-length test. + for (unsigned int plaintext_index = 1; + plaintext_index < kNistPlaintextLengthsCount; plaintext_index++) { + unsigned int known_index = + (key_index * kNistPlaintextLengthsCount) + plaintext_index; + unsigned int plaintext_length = kNistPlaintextLengths[plaintext_index]; + + // Test truncated outputs to ensure that we always get the desired values. + for (unsigned int out_len = 1; out_len < AES_BLOCK_SIZE; out_len++) { + CMAC_Begin(ctx.get()); + + CMAC_Update(ctx.get(), kNistPlaintext, plaintext_length); + + unsigned int actual_out_len = 0; + uint8_t output[AES_BLOCK_SIZE]; + CMAC_Finish(ctx.get(), output, &actual_out_len, out_len); + + ASSERT_TRUE(actual_out_len == out_len); + ASSERT_TRUE(Compare(output, kNistKnown[known_index], out_len)); + } + } + } +} |