tests/suites/test_suite_cmac.function

/* 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);
#if defined(MBEDTLS_AES_C)
    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);
#endif
exit:
    mbedtls_cipher_free(&ctx);
}
/* 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_LE_U(mbedtls_cipher_info_get_block_size(cipher_info),
              MBEDTLS_CIPHER_BLKSIZE_MAX);
    TEST_LE_U(mbedtls_cipher_info_get_block_size(cipher_info),
              MBEDTLS_CMAC_MAX_BLOCK_SIZE);

    memset(buf, 0x2A, sizeof(buf));
    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, data_t *key,
                                  int keybits, int block_size,
                                  data_t *block1, int block1_len,
                                  data_t *block2, int block2_len,
                                  data_t *block3, int block3_len,
                                  data_t *block4, int block4_len,
                                  data_t *expected_result)
{
    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 */

    mbedtls_cipher_init(&ctx);

    /* 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);

    TEST_ASSERT(mbedtls_cipher_setup(&ctx, cipher_info) == 0);

    TEST_ASSERT(mbedtls_cipher_cmac_starts(&ctx,
                                           (const unsigned char *) key->x,
                                           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->x,
                                               block1_len) == 0);
    }

    if (block2_len >= 0) {
        TEST_ASSERT(mbedtls_cipher_cmac_update(&ctx,
                                               (unsigned char *) block2->x,
                                               block2_len) == 0);
    }

    if (block3_len >= 0) {
        TEST_ASSERT(mbedtls_cipher_cmac_update(&ctx,
                                               (unsigned char *) block3->x,
                                               block3_len) == 0);
    }

    if (block4_len >= 0) {
        TEST_ASSERT(mbedtls_cipher_cmac_update(&ctx,
                                               (unsigned char *) block4->x,
                                               block4_len) == 0);
    }

    TEST_ASSERT(mbedtls_cipher_cmac_finish(&ctx, output) == 0);

    TEST_ASSERT(memcmp(output, expected_result->x, block_size)  == 0);

exit:
    mbedtls_cipher_free(&ctx);
}
/* END_CASE */

/* BEGIN_CASE */
void mbedtls_cmac_multiple_operations_same_key(int cipher_type,
                                               data_t *key, int keybits,
                                               int block_size,
                                               data_t *block_a1,
                                               int block_a1_len,
                                               data_t *block_a2,
                                               int block_a2_len,
                                               data_t *block_a3,
                                               int block_a3_len,
                                               data_t *expected_result_a,
                                               data_t *block_b1,
                                               int block_b1_len,
                                               data_t *block_b2,
                                               int block_b2_len,
                                               data_t *block_b3,
                                               int block_b3_len,
                                               data_t *expected_result_b
                                               )
{
    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 */



    mbedtls_cipher_init(&ctx);

    /* 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);

    TEST_ASSERT(mbedtls_cipher_setup(&ctx, cipher_info) == 0);

    TEST_ASSERT(mbedtls_cipher_cmac_starts(&ctx,
                                           (const unsigned char *) key->x,
                                           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->x,
                                               block_a1_len) == 0);
    }

    if (block_a2_len >= 0) {
        TEST_ASSERT(mbedtls_cipher_cmac_update(&ctx,
                                               (unsigned char *) block_a2->x,
                                               block_a2_len) == 0);
    }

    if (block_a3_len >= 0) {
        TEST_ASSERT(mbedtls_cipher_cmac_update(&ctx,
                                               (unsigned char *) block_a3->x,
                                               block_a3_len) == 0);
    }

    TEST_ASSERT(mbedtls_cipher_cmac_finish(&ctx, output) == 0);

    TEST_ASSERT(memcmp(output, expected_result_a->x, 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->x,
                                               block_b1_len) == 0);
    }

    if (block_b2_len >= 0) {
        TEST_ASSERT(mbedtls_cipher_cmac_update(&ctx,
                                               (unsigned char *) block_b2->x,
                                               block_b2_len) == 0);
    }

    if (block_b3_len >= 0) {
        TEST_ASSERT(mbedtls_cipher_cmac_update(&ctx,
                                               (unsigned char *) block_b3->x,
                                               block_b3_len) == 0);
    }

    TEST_ASSERT(mbedtls_cipher_cmac_finish(&ctx, output) == 0);

    TEST_ASSERT(memcmp(output, expected_result_b->x, block_size)  == 0);

exit:
    mbedtls_cipher_free(&ctx);
}
/* END_CASE */