843 lines
29 KiB
Text
843 lines
29 KiB
Text
/* BEGIN_HEADER */
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#include "mbedtls/ccm.h"
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/* Use the multipart interface to process the encrypted data in two parts
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* and check that the output matches the expected output.
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* The context must have been set up with the key. */
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static int check_multipart( mbedtls_ccm_context *ctx,
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int mode,
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const data_t *iv,
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const data_t *add,
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const data_t *input,
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const data_t *expected_output,
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const data_t *tag,
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size_t n1,
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size_t n1_add)
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{
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int ok = 0;
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uint8_t *output = NULL;
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size_t n2 = input->len - n1;
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size_t n2_add = add->len - n1_add;
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size_t olen;
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/* Sanity checks on the test data */
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TEST_ASSERT( n1 <= input->len );
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TEST_ASSERT( n1_add <= add->len );
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TEST_EQUAL( input->len, expected_output->len );
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TEST_EQUAL( 0, mbedtls_ccm_starts( ctx, mode, iv->x, iv->len ) );
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TEST_EQUAL( 0, mbedtls_ccm_set_lengths( ctx, add->len, input->len, tag->len ) );
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TEST_EQUAL( 0, mbedtls_ccm_update_ad( ctx, add->x, n1_add) );
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TEST_EQUAL( 0, mbedtls_ccm_update_ad( ctx, add->x + n1_add, n2_add ) );
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/* Allocate a tight buffer for each update call. This way, if the function
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* tries to write beyond the advertised required buffer size, this will
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* count as an overflow for memory sanitizers and static checkers. */
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ASSERT_ALLOC( output, n1 );
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olen = 0xdeadbeef;
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TEST_EQUAL( 0, mbedtls_ccm_update( ctx, input->x, n1, output, n1, &olen ) );
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TEST_EQUAL( n1, olen );
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ASSERT_COMPARE( output, olen, expected_output->x, n1 );
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mbedtls_free( output );
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output = NULL;
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ASSERT_ALLOC( output, n2 );
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olen = 0xdeadbeef;
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TEST_EQUAL( 0, mbedtls_ccm_update( ctx, input->x + n1, n2, output, n2, &olen ) );
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TEST_EQUAL( n2, olen );
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ASSERT_COMPARE( output, olen, expected_output->x + n1, n2 );
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mbedtls_free( output );
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output = NULL;
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ASSERT_ALLOC( output, tag->len );
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TEST_EQUAL( 0, mbedtls_ccm_finish( ctx, output, tag->len ) );
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ASSERT_COMPARE( output, tag->len, tag->x, tag->len );
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mbedtls_free( output );
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output = NULL;
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ok = 1;
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exit:
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mbedtls_free( output );
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return( ok );
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}
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/* END_HEADER */
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/* BEGIN_DEPENDENCIES
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* depends_on:MBEDTLS_CCM_C
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* END_DEPENDENCIES
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*/
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/* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST:MBEDTLS_AES_C */
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void mbedtls_ccm_self_test( )
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{
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TEST_ASSERT( mbedtls_ccm_self_test( 1 ) == 0 );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mbedtls_ccm_setkey( int cipher_id, int key_size, int result )
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{
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mbedtls_ccm_context ctx;
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unsigned char key[32];
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int ret;
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mbedtls_ccm_init( &ctx );
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memset( key, 0x2A, sizeof( key ) );
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TEST_ASSERT( (unsigned) key_size <= 8 * sizeof( key ) );
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ret = mbedtls_ccm_setkey( &ctx, cipher_id, key, key_size );
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TEST_ASSERT( ret == result );
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exit:
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mbedtls_ccm_free( &ctx );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:MBEDTLS_AES_C */
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void ccm_lengths( int msg_len, int iv_len, int add_len, int tag_len, int res )
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{
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mbedtls_ccm_context ctx;
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unsigned char key[16];
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unsigned char msg[10];
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unsigned char iv[14];
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unsigned char *add = NULL;
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unsigned char out[10];
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unsigned char tag[18];
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int decrypt_ret;
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mbedtls_ccm_init( &ctx );
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ASSERT_ALLOC_WEAK( add, add_len );
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memset( key, 0, sizeof( key ) );
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memset( msg, 0, sizeof( msg ) );
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memset( iv, 0, sizeof( iv ) );
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memset( out, 0, sizeof( out ) );
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memset( tag, 0, sizeof( tag ) );
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TEST_ASSERT( mbedtls_ccm_setkey( &ctx, MBEDTLS_CIPHER_ID_AES,
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key, 8 * sizeof( key ) ) == 0 );
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TEST_ASSERT( mbedtls_ccm_encrypt_and_tag( &ctx, msg_len, iv, iv_len, add, add_len,
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msg, out, tag, tag_len ) == res );
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decrypt_ret = mbedtls_ccm_auth_decrypt( &ctx, msg_len, iv, iv_len, add, add_len,
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msg, out, tag, tag_len );
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if( res == 0 )
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TEST_ASSERT( decrypt_ret == MBEDTLS_ERR_CCM_AUTH_FAILED );
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else
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TEST_ASSERT( decrypt_ret == res );
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exit:
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mbedtls_free( add );
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mbedtls_ccm_free( &ctx );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:MBEDTLS_AES_C */
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void ccm_star_lengths( int msg_len, int iv_len, int add_len, int tag_len,
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int res )
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{
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mbedtls_ccm_context ctx;
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unsigned char key[16];
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unsigned char msg[10];
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unsigned char iv[14];
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unsigned char add[10];
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unsigned char out[10];
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unsigned char tag[18];
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int decrypt_ret;
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mbedtls_ccm_init( &ctx );
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memset( key, 0, sizeof( key ) );
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memset( msg, 0, sizeof( msg ) );
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memset( iv, 0, sizeof( iv ) );
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memset( add, 0, sizeof( add ) );
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memset( out, 0, sizeof( out ) );
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memset( tag, 0, sizeof( tag ) );
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TEST_ASSERT( mbedtls_ccm_setkey( &ctx, MBEDTLS_CIPHER_ID_AES,
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key, 8 * sizeof( key ) ) == 0 );
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TEST_ASSERT( mbedtls_ccm_star_encrypt_and_tag( &ctx, msg_len, iv, iv_len,
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add, add_len, msg, out, tag, tag_len ) == res );
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decrypt_ret = mbedtls_ccm_star_auth_decrypt( &ctx, msg_len, iv, iv_len, add,
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add_len, msg, out, tag, tag_len );
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if( res == 0 && tag_len != 0 )
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TEST_ASSERT( decrypt_ret == MBEDTLS_ERR_CCM_AUTH_FAILED );
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else
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TEST_ASSERT( decrypt_ret == res );
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exit:
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mbedtls_ccm_free( &ctx );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mbedtls_ccm_encrypt_and_tag( int cipher_id, data_t * key,
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data_t * msg, data_t * iv,
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data_t * add, data_t * result )
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{
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mbedtls_ccm_context ctx;
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size_t n1, n1_add;
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uint8_t* io_msg_buf = NULL;
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uint8_t* tag_buf = NULL;
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const size_t expected_tag_len = result->len - msg->len;
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const uint8_t* expected_tag = result->x + msg->len;
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/* Prepare input/output message buffer */
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ASSERT_ALLOC( io_msg_buf, msg->len );
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if( msg->len != 0 )
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memcpy( io_msg_buf, msg->x, msg->len );
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/* Prepare tag buffer */
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ASSERT_ALLOC( tag_buf, expected_tag_len );
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mbedtls_ccm_init( &ctx );
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TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
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/* Test with input == output */
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TEST_EQUAL( mbedtls_ccm_encrypt_and_tag( &ctx, msg->len, iv->x, iv->len, add->x, add->len,
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io_msg_buf, io_msg_buf, tag_buf, expected_tag_len ), 0);
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ASSERT_COMPARE( io_msg_buf, msg->len, result->x, msg->len );
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ASSERT_COMPARE( tag_buf, expected_tag_len, expected_tag, expected_tag_len );
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/* Prepare data_t structures for multipart testing */
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const data_t encrypted_expected = { .x = result->x,
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.len = msg->len };
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const data_t tag_expected = { .x = (uint8_t*) expected_tag, /* cast to conform with data_t x type */
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.len = expected_tag_len };
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for( n1 = 0; n1 <= msg->len; n1 += 1 )
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{
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for( n1_add = 0; n1_add <= add->len; n1_add += 1 )
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{
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mbedtls_test_set_step( n1 * 10000 + n1_add );
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if( !check_multipart( &ctx, MBEDTLS_CCM_ENCRYPT,
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iv, add, msg,
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&encrypted_expected,
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&tag_expected,
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n1, n1_add ) )
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goto exit;
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}
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}
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exit:
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mbedtls_ccm_free( &ctx );
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mbedtls_free( io_msg_buf );
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mbedtls_free( tag_buf );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mbedtls_ccm_star_no_tag( int cipher_id, int mode, data_t * key,
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data_t * msg, data_t * iv, data_t * result )
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{
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mbedtls_ccm_context ctx;
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uint8_t *output = NULL;
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size_t olen;
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mbedtls_ccm_init( &ctx );
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TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
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TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
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TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, 0, msg->len, 0 ) );
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ASSERT_ALLOC( output, msg->len );
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TEST_EQUAL( 0, mbedtls_ccm_update( &ctx, msg->x, msg->len, output, msg->len, &olen ) );
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TEST_EQUAL( result->len, olen );
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ASSERT_COMPARE( output, olen, result->x, result->len );
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TEST_EQUAL( 0, mbedtls_ccm_finish( &ctx, NULL, 0 ) );
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exit:
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mbedtls_free(output);
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mbedtls_ccm_free( &ctx );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mbedtls_ccm_auth_decrypt( int cipher_id, data_t * key,
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data_t * msg, data_t * iv,
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data_t * add, int expected_tag_len, int result,
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data_t * expected_msg )
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{
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mbedtls_ccm_context ctx;
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size_t n1, n1_add;
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const size_t expected_msg_len = msg->len - expected_tag_len;
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const uint8_t* expected_tag = msg->x + expected_msg_len;
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/* Prepare input/output message buffer */
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uint8_t* io_msg_buf = NULL;
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ASSERT_ALLOC( io_msg_buf, expected_msg_len );
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if( expected_msg_len )
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memcpy( io_msg_buf, msg->x, expected_msg_len );
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mbedtls_ccm_init( &ctx );
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TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
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/* Test with input == output */
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TEST_EQUAL( mbedtls_ccm_auth_decrypt( &ctx, expected_msg_len, iv->x, iv->len, add->x, add->len,
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io_msg_buf, io_msg_buf, expected_tag, expected_tag_len ), result );
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if( result == 0 )
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{
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ASSERT_COMPARE( io_msg_buf, expected_msg_len, expected_msg->x, expected_msg_len );
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/* Prepare data_t structures for multipart testing */
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const data_t encrypted = { .x = msg->x,
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.len = expected_msg_len };
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const data_t tag_expected = { .x = (uint8_t*) expected_tag,
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.len = expected_tag_len };
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for( n1 = 0; n1 <= expected_msg_len; n1 += 1 )
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{
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for( n1_add = 0; n1_add <= add->len; n1_add += 1 )
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{
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mbedtls_test_set_step( n1 * 10000 + n1_add );
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if( !check_multipart( &ctx, MBEDTLS_CCM_DECRYPT,
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iv, add, &encrypted,
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expected_msg,
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&tag_expected,
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n1, n1_add ) )
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goto exit;
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}
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}
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}
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else
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{
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size_t i;
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for( i = 0; i < expected_msg_len; i++ )
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TEST_EQUAL( io_msg_buf[i], 0 );
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}
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exit:
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mbedtls_free(io_msg_buf);
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mbedtls_ccm_free( &ctx );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mbedtls_ccm_star_encrypt_and_tag( int cipher_id,
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data_t *key, data_t *msg,
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data_t *source_address, data_t *frame_counter,
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int sec_level, data_t *add,
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data_t *expected_result, int output_ret )
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{
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unsigned char iv[13];
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mbedtls_ccm_context ctx;
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size_t iv_len, expected_tag_len;
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size_t n1, n1_add;
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uint8_t* io_msg_buf = NULL;
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uint8_t* tag_buf = NULL;
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const uint8_t* expected_tag = expected_result->x + msg->len;
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/* Calculate tag length */
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if( sec_level % 4 == 0)
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expected_tag_len = 0;
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else
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expected_tag_len = 1 << ( sec_level % 4 + 1);
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/* Prepare input/output message buffer */
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ASSERT_ALLOC( io_msg_buf, msg->len );
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if( msg->len )
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memcpy( io_msg_buf, msg->x, msg->len );
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/* Prepare tag buffer */
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if( expected_tag_len == 0 )
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ASSERT_ALLOC( tag_buf, 16 );
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else
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ASSERT_ALLOC( tag_buf, expected_tag_len );
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/* Calculate iv */
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TEST_ASSERT( source_address->len == 8 );
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TEST_ASSERT( frame_counter->len == 4 );
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memcpy( iv, source_address->x, source_address->len );
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memcpy( iv + source_address->len, frame_counter->x, frame_counter->len );
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iv[source_address->len + frame_counter->len] = sec_level;
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iv_len = sizeof( iv );
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mbedtls_ccm_init( &ctx );
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TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id,
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key->x, key->len * 8 ), 0 );
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/* Test with input == output */
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TEST_EQUAL( mbedtls_ccm_star_encrypt_and_tag( &ctx, msg->len, iv, iv_len,
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add->x, add->len, io_msg_buf,
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io_msg_buf, tag_buf, expected_tag_len), output_ret );
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ASSERT_COMPARE( io_msg_buf, msg->len, expected_result->x, msg->len );
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ASSERT_COMPARE( tag_buf, expected_tag_len, expected_tag, expected_tag_len );
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if( output_ret == 0 )
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{
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const data_t iv_data = { .x = iv,
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.len = iv_len };
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const data_t encrypted_expected = { .x = expected_result->x,
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.len = msg->len };
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const data_t tag_expected = { .x = (uint8_t*)expected_tag,
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.len = expected_tag_len };
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for( n1 = 0; n1 <= msg->len; n1 += 1 )
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{
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for( n1_add = 0; n1_add <= add->len; n1_add += 1 )
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{
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mbedtls_test_set_step( n1 * 10000 + n1_add );
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if( !check_multipart( &ctx, MBEDTLS_CCM_STAR_ENCRYPT,
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&iv_data, add, msg,
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&encrypted_expected,
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&tag_expected,
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n1, n1_add ) )
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goto exit;
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}
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}
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}
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exit:
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mbedtls_ccm_free( &ctx );
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mbedtls_free( io_msg_buf );
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mbedtls_free( tag_buf );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mbedtls_ccm_star_auth_decrypt( int cipher_id,
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data_t *key, data_t *msg,
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data_t *source_address, data_t *frame_counter,
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int sec_level, data_t *add,
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data_t *expected_result, int output_ret )
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{
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unsigned char iv[13];
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mbedtls_ccm_context ctx;
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size_t iv_len, expected_tag_len;
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size_t n1, n1_add;
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/* Calculate tag length */
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if( sec_level % 4 == 0)
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expected_tag_len = 0;
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else
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expected_tag_len = 1 << ( sec_level % 4 + 1);
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const size_t expected_msg_len = msg->len - expected_tag_len;
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const uint8_t* expected_tag = msg->x + expected_msg_len;
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/* Prepare input/output message buffer */
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uint8_t* io_msg_buf = NULL;
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ASSERT_ALLOC( io_msg_buf, expected_msg_len );
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if( expected_msg_len )
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memcpy( io_msg_buf, msg->x, expected_msg_len );
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/* Calculate iv */
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memset( iv, 0x00, sizeof( iv ) );
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TEST_ASSERT( source_address->len == 8 );
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TEST_ASSERT( frame_counter->len == 4 );
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memcpy( iv, source_address->x, source_address->len );
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memcpy( iv + source_address->len, frame_counter->x, frame_counter->len );
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iv[source_address->len + frame_counter->len] = sec_level;
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iv_len = sizeof( iv );
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mbedtls_ccm_init( &ctx );
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TEST_ASSERT( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ) == 0 );
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/* Test with input == output */
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TEST_EQUAL( mbedtls_ccm_star_auth_decrypt( &ctx, expected_msg_len, iv, iv_len,
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add->x, add->len, io_msg_buf, io_msg_buf,
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expected_tag, expected_tag_len ), output_ret );
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ASSERT_COMPARE( io_msg_buf, expected_msg_len, expected_result->x, expected_msg_len );
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if( output_ret == 0 )
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{
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const data_t iv_data = { .x = iv,
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.len = iv_len };
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const data_t encrypted = { .x = msg->x,
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.len = expected_msg_len} ;
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const data_t tag_expected = { .x = (uint8_t*) expected_tag,
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.len = expected_tag_len };
|
|
|
|
for( n1 = 0; n1 <= expected_msg_len; n1 += 1 )
|
|
{
|
|
for( n1_add = 0; n1_add <= add->len; n1_add += 1 )
|
|
{
|
|
mbedtls_test_set_step( n1 * 10000 + n1_add );
|
|
if( !check_multipart( &ctx, MBEDTLS_CCM_STAR_DECRYPT,
|
|
&iv_data, add, &encrypted,
|
|
expected_result,
|
|
&tag_expected,
|
|
n1, n1_add ) )
|
|
goto exit;
|
|
}
|
|
}
|
|
}
|
|
|
|
exit:
|
|
mbedtls_ccm_free( &ctx );
|
|
mbedtls_free( io_msg_buf );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Skip auth data, provide full text */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_skip_ad( int cipher_id, int mode,
|
|
data_t * key, data_t * msg, data_t * iv,
|
|
data_t * result, data_t * tag )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
uint8_t *output = NULL;
|
|
size_t olen;
|
|
|
|
/* Sanity checks on the test data */
|
|
TEST_EQUAL( msg->len, result->len );
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, 0, msg->len, tag->len ) );
|
|
|
|
ASSERT_ALLOC( output, result->len );
|
|
olen = 0xdeadbeef;
|
|
TEST_EQUAL( 0, mbedtls_ccm_update( &ctx, msg->x, msg->len, output, result->len, &olen ) );
|
|
TEST_EQUAL( result->len, olen );
|
|
ASSERT_COMPARE( output, olen, result->x, result->len );
|
|
mbedtls_free( output );
|
|
output = NULL;
|
|
|
|
ASSERT_ALLOC( output, tag->len );
|
|
TEST_EQUAL( 0, mbedtls_ccm_finish( &ctx, output, tag->len ) );
|
|
ASSERT_COMPARE( output, tag->len, tag->x, tag->len );
|
|
mbedtls_free( output );
|
|
output = NULL;
|
|
|
|
exit:
|
|
mbedtls_free( output );
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Provide auth data, skip full text */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_skip_update( int cipher_id, int mode,
|
|
data_t * key, data_t * iv, data_t* add,
|
|
data_t * tag )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
uint8_t *output = NULL;
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, 0, tag->len ) );
|
|
|
|
TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
|
|
|
|
ASSERT_ALLOC( output, tag->len );
|
|
TEST_EQUAL( 0, mbedtls_ccm_finish( &ctx, output, tag->len ) );
|
|
ASSERT_COMPARE( output, tag->len, tag->x, tag->len );
|
|
mbedtls_free( output );
|
|
output = NULL;
|
|
|
|
exit:
|
|
mbedtls_free( output );
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Provide too much auth data */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_overflow_ad( int cipher_id, int mode,
|
|
data_t * key, data_t * iv,
|
|
data_t * add )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
// use hardcoded values for msg length and tag length. They are not a part of this test
|
|
// subtract 1 from configured auth data length to provoke an overflow
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len - 1, 16, 16 ) );
|
|
|
|
TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
|
|
exit:
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Provide unexpected auth data */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_unexpected_ad( int cipher_id, int mode,
|
|
data_t * key, data_t * iv,
|
|
data_t * add )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
// use hardcoded values for msg length and tag length. They are not a part of this test
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, 0, 16, 16 ) );
|
|
|
|
TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
|
|
exit:
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Provide unexpected plaintext/ciphertext data */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_unexpected_text( int cipher_id, int mode,
|
|
data_t * key, data_t * msg, data_t * iv,
|
|
data_t * add )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
uint8_t *output = NULL;
|
|
size_t olen;
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
// use hardcoded value for tag length. It is not a part of this test
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, 0, 16 ) );
|
|
|
|
TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
|
|
|
|
ASSERT_ALLOC( output, msg->len );
|
|
olen = 0xdeadbeef;
|
|
TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_update( &ctx, msg->x, msg->len, output, msg->len, &olen ) );
|
|
exit:
|
|
mbedtls_free( output );
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Provide incomplete auth data and finish */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_incomplete_ad( int cipher_id, int mode,
|
|
data_t * key, data_t * iv, data_t* add )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
uint8_t *output = NULL;
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
// use hardcoded values for msg length and tag length. They are not a part of this test
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, 0, 16 ) );
|
|
|
|
TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len - 1) );
|
|
|
|
ASSERT_ALLOC( output, 16 );
|
|
TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_finish( &ctx, output, 16 ) );
|
|
|
|
exit:
|
|
mbedtls_free( output );
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Provide complete auth data on first update_ad.
|
|
* Provide unexpected auth data on second update_ad */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_full_ad_and_overflow( int cipher_id, int mode,
|
|
data_t * key, data_t * iv,
|
|
data_t * add )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
// use hardcoded values for msg length and tag length. They are not a part of this test
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, 16, 16 ) );
|
|
|
|
// pass full auth data
|
|
TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
|
|
// pass 1 extra byte
|
|
TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_update_ad( &ctx, add->x, 1) );
|
|
exit:
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Provide incomplete auth data on first update_ad.
|
|
* Provide too much auth data on second update_ad */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_incomplete_ad_and_overflow( int cipher_id, int mode,
|
|
data_t * key, data_t * iv,
|
|
data_t * add )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
uint8_t add_second_buffer[2];
|
|
|
|
add_second_buffer[0] = add->x[ add->len - 1 ];
|
|
add_second_buffer[1] = 0xAB; // some magic value
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
// use hardcoded values for msg length and tag length. They are not a part of this test
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, 16, 16 ) );
|
|
|
|
// pass incomplete auth data
|
|
TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len - 1) );
|
|
// pass 2 extra bytes (1 missing byte from previous incomplete pass, and 1 unexpected byte)
|
|
TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_update_ad( &ctx, add_second_buffer, 2) );
|
|
exit:
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Provide too much plaintext/ciphertext */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_overflow_update( int cipher_id, int mode,
|
|
data_t * key, data_t * msg, data_t * iv,
|
|
data_t * add )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
uint8_t *output = NULL;
|
|
size_t olen;
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
// use hardcoded value for tag length. It is a not a part of this test
|
|
// subtract 1 from configured msg length to provoke an overflow
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, msg->len - 1, 16 ) );
|
|
|
|
TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
|
|
|
|
ASSERT_ALLOC( output, msg->len );
|
|
TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, \
|
|
mbedtls_ccm_update( &ctx, msg->x, msg->len, output, msg->len, &olen ) );
|
|
exit:
|
|
mbedtls_free( output );
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Provide incomplete plaintext/ciphertext and finish */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_incomplete_update( int cipher_id, int mode,
|
|
data_t * key, data_t * msg, data_t * iv,
|
|
data_t * add )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
uint8_t *output = NULL;
|
|
size_t olen;
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
// use hardcoded value for tag length. It is not a part of this test
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, msg->len, 16 ) );
|
|
|
|
TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
|
|
|
|
ASSERT_ALLOC( output, msg->len );
|
|
olen = 0xdeadbeef;
|
|
TEST_EQUAL( 0, mbedtls_ccm_update( &ctx, msg->x, msg->len - 1, output, msg->len, &olen ) );
|
|
mbedtls_free( output );
|
|
output = NULL;
|
|
|
|
ASSERT_ALLOC( output, 16 );
|
|
TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_finish( &ctx, output, 16 ) );
|
|
|
|
exit:
|
|
mbedtls_free( output );
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Provide full plaintext/ciphertext of first update
|
|
* Provide unexpected plaintext/ciphertext on second update */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_full_update_and_overflow( int cipher_id, int mode,
|
|
data_t * key, data_t * msg, data_t * iv,
|
|
data_t * add )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
uint8_t *output = NULL;
|
|
size_t olen;
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
// use hardcoded value for tag length. It is a not a part of this test
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, msg->len, 16 ) );
|
|
|
|
TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
|
|
|
|
ASSERT_ALLOC( output, msg->len );
|
|
// pass full text
|
|
TEST_EQUAL( 0, mbedtls_ccm_update( &ctx, msg->x, msg->len, output, msg->len, &olen ) );
|
|
// pass 1 extra byte
|
|
TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, \
|
|
mbedtls_ccm_update( &ctx, msg->x, 1, output, 1, &olen ) );
|
|
exit:
|
|
mbedtls_free( output );
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Provide incomplete plaintext/ciphertext of first update
|
|
* Provide too much plaintext/ciphertext on second update */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_incomplete_update_overflow( int cipher_id, int mode,
|
|
data_t * key, data_t * msg, data_t * iv,
|
|
data_t * add )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
uint8_t *output = NULL;
|
|
size_t olen;
|
|
uint8_t msg_second_buffer[2];
|
|
|
|
msg_second_buffer[0] = msg->x[ msg->len - 1 ];
|
|
msg_second_buffer[1] = 0xAB; // some magic value
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
// use hardcoded value for tag length. It is a not a part of this test
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, add->len, msg->len, 16 ) );
|
|
|
|
TEST_EQUAL( 0, mbedtls_ccm_update_ad( &ctx, add->x, add->len) );
|
|
|
|
ASSERT_ALLOC( output, msg->len + 1 );
|
|
// pass incomplete text
|
|
TEST_EQUAL( 0, mbedtls_ccm_update( &ctx, msg->x, msg->len - 1, output, msg->len + 1, &olen ) );
|
|
// pass 2 extra bytes (1 missing byte from previous incomplete pass, and 1 unexpected byte)
|
|
TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, \
|
|
mbedtls_ccm_update( &ctx, msg_second_buffer, 2, output + msg->len - 1, 2, &olen ) );
|
|
exit:
|
|
mbedtls_free( output );
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* Finish without passing any auth data or plaintext/ciphertext input */
|
|
/* BEGIN_CASE */
|
|
void mbedtls_ccm_instant_finish( int cipher_id, int mode,
|
|
data_t * key, data_t * iv )
|
|
{
|
|
mbedtls_ccm_context ctx;
|
|
uint8_t *output = NULL;
|
|
|
|
mbedtls_ccm_init( &ctx );
|
|
TEST_EQUAL( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ), 0 );
|
|
TEST_EQUAL( 0, mbedtls_ccm_starts( &ctx, mode, iv->x, iv->len ) );
|
|
// use hardcoded values for add length, msg length and tag length.
|
|
// They are not a part of this test
|
|
TEST_EQUAL( 0, mbedtls_ccm_set_lengths( &ctx, 16, 16, 16 ) );
|
|
|
|
ASSERT_ALLOC( output, 16 );
|
|
TEST_EQUAL( MBEDTLS_ERR_CCM_BAD_INPUT, mbedtls_ccm_finish( &ctx, output, 16 ) );
|
|
|
|
exit:
|
|
mbedtls_free( output );
|
|
mbedtls_ccm_free( &ctx );
|
|
}
|
|
/* END_CASE */
|