/* BEGIN_HEADER */ #include "mbedtls/cipher.h" #include "mbedtls/cmac.h" /* END_HEADER */ /* BEGIN_DEPENDENCIES * depends_on:MBEDTLS_CMAC_C * END_DEPENDENCIES */ /* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */ void mbedtls_cmac_self_test( ) { TEST_ASSERT( mbedtls_cmac_self_test( 1 ) == 0 ); } /* END_CASE */ /* BEGIN_CASE */ void mbedtls_cmac_null_args( ) { mbedtls_cipher_context_t ctx; const mbedtls_cipher_info_t *cipher_info; unsigned char test_key[MBEDTLS_CIPHER_BLKSIZE_MAX]; unsigned char test_data[MBEDTLS_CIPHER_BLKSIZE_MAX]; unsigned char test_output[MBEDTLS_CIPHER_BLKSIZE_MAX]; mbedtls_cipher_init( &ctx ); /* Test NULL cipher info */ TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, test_data, 16 ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); cipher_info = mbedtls_cipher_info_from_type( MBEDTLS_CIPHER_AES_128_ECB ); TEST_ASSERT( mbedtls_cipher_setup( &ctx, cipher_info ) == 0 ); TEST_ASSERT( mbedtls_cipher_cmac_starts( NULL, test_key, 128 ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_cipher_cmac_starts( &ctx, NULL, 128 ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_cipher_cmac_update( NULL, test_data, 16 ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, NULL, 16 ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_cipher_cmac_finish( NULL, test_output ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_cipher_cmac_finish( &ctx, NULL ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_cipher_cmac_reset( NULL ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_cipher_cmac( NULL, test_key, 128, test_data, 16, test_output ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_cipher_cmac( cipher_info, NULL, 128, test_data, 16, test_output ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_cipher_cmac( cipher_info, test_key, 128, NULL, 16, test_output ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_cipher_cmac( cipher_info, test_key, 128, test_data, 16, NULL ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_aes_cmac_prf_128( NULL, 16, test_data, 16, test_output ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_aes_cmac_prf_128( test_key, 16, NULL, 16, test_output ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); TEST_ASSERT( mbedtls_aes_cmac_prf_128( test_key, 16, test_data, 16, NULL ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); } /* END_CASE */ /* BEGIN_CASE */ void mbedtls_cmac_setkey( int cipher_type, int key_size, int result ) { const mbedtls_cipher_info_t *cipher_info; unsigned char key[32]; unsigned char buf[16]; unsigned char tmp[16]; memset( key, 0x2A, sizeof( key ) ); TEST_ASSERT( (unsigned) key_size <= 8 * sizeof( key ) ); TEST_ASSERT( ( cipher_info = mbedtls_cipher_info_from_type( cipher_type ) ) != NULL ); TEST_ASSERT( ( result == mbedtls_cipher_cmac( cipher_info, key, key_size, buf, 16, tmp ) ) != 0 ); } /* END_CASE */ /* BEGIN_CASE */ void mbedtls_cmac_multiple_blocks( int cipher_type, char *key_string, int keybits, int block_size, char *block1_string, int block1_len, char *block2_string, int block2_len, char *block3_string, int block3_len, char *block4_string, int block4_len, char *expected_result_string ) { unsigned char key[100]; unsigned char block1[100]; unsigned char block2[100]; unsigned char block3[100]; unsigned char block4[100]; unsigned char expected_result[100]; const mbedtls_cipher_info_t *cipher_info; mbedtls_cipher_context_t ctx; unsigned char output[MBEDTLS_CIPHER_BLKSIZE_MAX]; /* Convert the test parameters to binary data */ unhexify( key, key_string ); unhexify( block1, block1_string ); unhexify( block2, block2_string ); unhexify( block3, block3_string ); unhexify( block4, block4_string ); unhexify( expected_result, expected_result_string ); /* Validate the test inputs */ TEST_ASSERT( block1_len <= 100 ); TEST_ASSERT( block2_len <= 100 ); TEST_ASSERT( block3_len <= 100 ); TEST_ASSERT( block4_len <= 100 ); /* Set up */ TEST_ASSERT( ( cipher_info = mbedtls_cipher_info_from_type( cipher_type ) ) != NULL ); mbedtls_cipher_init( &ctx ); TEST_ASSERT( mbedtls_cipher_setup( &ctx, cipher_info ) == 0 ); TEST_ASSERT( mbedtls_cipher_cmac_starts( &ctx, (const unsigned char*)key, keybits ) == 0 ); /* Multiple partial and complete blocks. A negative length means skip the * update operation */ if( block1_len >= 0) TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, (unsigned char*)block1, block1_len ) == 0); if( block2_len >= 0 ) TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, (unsigned char*)block2, block2_len ) == 0); if( block3_len >= 0 ) TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, (unsigned char*)block3, block3_len ) == 0); if( block4_len >= 0 ) TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, (unsigned char*)block4, block4_len ) == 0); TEST_ASSERT( mbedtls_cipher_cmac_finish( &ctx, output ) == 0 ); TEST_ASSERT( memcmp( output, expected_result, block_size ) == 0 ); mbedtls_cipher_free( &ctx ); } /* END_CASE */ /* BEGIN_CASE */ void mbedtls_cmac_multiple_operations_same_key( int cipher_type, char *key_string, int keybits, int block_size, char *block_a1_string, int block_a1_len, char *block_a2_string, int block_a2_len, char *block_a3_string, int block_a3_len, char *expected_result_a_string, char *block_b1_string, int block_b1_len, char *block_b2_string, int block_b2_len, char *block_b3_string, int block_b3_len, char *expected_result_b_string ) { unsigned char key[100]; unsigned char block_a1[100]; unsigned char block_a2[100]; unsigned char block_a3[100]; unsigned char block_b1[100]; unsigned char block_b2[100]; unsigned char block_b3[100]; unsigned char expected_result_a[100], expected_result_b[100]; const mbedtls_cipher_info_t *cipher_info; mbedtls_cipher_context_t ctx; unsigned char output[MBEDTLS_CIPHER_BLKSIZE_MAX]; /* Convert the test parameters to binary data */ unhexify( key, key_string ); unhexify( block_a1, block_a1_string ); unhexify( block_a2, block_a2_string ); unhexify( block_a3, block_a3_string ); unhexify( block_b1, block_b1_string ); unhexify( block_b2, block_b2_string ); unhexify( block_b3, block_b3_string ); unhexify( expected_result_a, expected_result_a_string ); unhexify( expected_result_b, expected_result_b_string ); /* Validate the test inputs */ TEST_ASSERT( block_a1_len <= 100 ); TEST_ASSERT( block_a2_len <= 100 ); TEST_ASSERT( block_a3_len <= 100 ); TEST_ASSERT( block_b1_len <= 100 ); TEST_ASSERT( block_b2_len <= 100 ); TEST_ASSERT( block_b3_len <= 100 ); /* Set up */ TEST_ASSERT( ( cipher_info = mbedtls_cipher_info_from_type( cipher_type ) ) != NULL ); mbedtls_cipher_init( &ctx ); TEST_ASSERT( mbedtls_cipher_setup( &ctx, cipher_info ) == 0 ); TEST_ASSERT( mbedtls_cipher_cmac_starts( &ctx, (const unsigned char*)key, keybits ) == 0 ); /* Sequence A */ /* Multiple partial and complete blocks. A negative length means skip the * update operation */ if( block_a1_len >= 0) TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, (unsigned char*)block_a1, block_a1_len ) == 0); if( block_a2_len >= 0 ) TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, (unsigned char*)block_a2, block_a2_len ) == 0); if( block_a3_len >= 0 ) TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, (unsigned char*)block_a3, block_a3_len ) == 0); TEST_ASSERT( mbedtls_cipher_cmac_finish( &ctx, output ) == 0 ); TEST_ASSERT( memcmp( output, expected_result_a, block_size ) == 0 ); TEST_ASSERT( mbedtls_cipher_cmac_reset( &ctx ) == 0 ); /* Sequence B */ /* Multiple partial and complete blocks. A negative length means skip the * update operation */ if( block_b1_len >= 0) TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, (unsigned char*)block_b1, block_b1_len ) == 0); if( block_b2_len >= 0 ) TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, (unsigned char*)block_b2, block_b2_len ) == 0); if( block_b3_len >= 0 ) TEST_ASSERT( mbedtls_cipher_cmac_update( &ctx, (unsigned char*)block_b3, block_b3_len ) == 0); TEST_ASSERT( mbedtls_cipher_cmac_finish( &ctx, output ) == 0 ); TEST_ASSERT( memcmp( output, expected_result_b, block_size ) == 0 ); mbedtls_cipher_free( &ctx ); } /* END_CASE */