328 lines
9.8 KiB
Text
328 lines
9.8 KiB
Text
/* BEGIN_HEADER */
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#include "mbedtls/ccm.h"
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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[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_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_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 tag_len;
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uint8_t * msg_n_tag = (uint8_t *)malloc( result->len + 2 );
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mbedtls_ccm_init( &ctx );
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memset( msg_n_tag, 0, result->len + 2 );
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memcpy( msg_n_tag, msg->x, msg->len );
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tag_len = result->len - msg->len;
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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_ASSERT( mbedtls_ccm_encrypt_and_tag( &ctx, msg->len, iv->x, iv->len, add->x, add->len,
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msg_n_tag, msg_n_tag, msg_n_tag + msg->len, tag_len ) == 0 );
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TEST_ASSERT( memcmp( msg_n_tag, result->x, result->len ) == 0 );
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/* Check we didn't write past the end */
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TEST_ASSERT( msg_n_tag[result->len] == 0 && msg_n_tag[result->len + 1] == 0 );
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exit:
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mbedtls_ccm_free( &ctx );
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free( msg_n_tag );
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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 tag_len, int result,
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data_t * hex_msg )
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{
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unsigned char tag[16];
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mbedtls_ccm_context ctx;
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mbedtls_ccm_init( &ctx );
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memset( tag, 0x00, sizeof( tag ) );
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msg->len -= tag_len;
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memcpy( tag, msg->x + msg->len, tag_len );
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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_ASSERT( mbedtls_ccm_auth_decrypt( &ctx, msg->len, iv->x, iv->len, add->x, add->len,
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msg->x, msg->x, msg->x + msg->len, tag_len ) == result );
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if( result == 0 )
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{
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TEST_ASSERT( memcmp( msg->x, hex_msg->x, hex_msg->len ) == 0 );
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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 < msg->len; i++ )
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TEST_ASSERT( msg->x[i] == 0 );
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}
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/* Check we didn't write past the end (where the original tag is) */
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TEST_ASSERT( memcmp( msg->x + msg->len, tag, tag_len ) == 0 );
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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_star_encrypt_and_tag( int cipher_id,
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char *key_hex, char *msg_hex,
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char *source_address_hex, char *frame_counter_hex,
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int sec_level, char *add_hex,
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char *result_hex, int output_ret )
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{
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unsigned char key[32];
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unsigned char msg[50];
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unsigned char iv[13];
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unsigned char add[32];
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unsigned char result[50];
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unsigned char source_address[8];
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unsigned char frame_counter[4];
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mbedtls_ccm_context ctx;
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size_t i, key_len, msg_len, iv_len, add_len, result_len, source_address_len, frame_counter_len, tag_len;
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int ret;
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mbedtls_ccm_init( &ctx );
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memset( key, 0x00, sizeof( key ) );
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memset( msg, 0x00, sizeof( msg ) );
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memset( iv, 0x00, sizeof( iv ) );
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memset( add, 0x00, sizeof( add ) );
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memset( result, 0x00, sizeof( result ) );
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memset( source_address, 0x00, sizeof( source_address ) );
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memset( frame_counter, 0x00, sizeof( frame_counter ) );
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key_len = unhexify( key, key_hex );
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msg_len = unhexify( msg, msg_hex );
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add_len = unhexify( add, add_hex );
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result_len = unhexify( result, result_hex );
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source_address_len = unhexify( source_address, source_address_hex );
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frame_counter_len = unhexify( frame_counter, frame_counter_hex );
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if( sec_level % 4 == 0)
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tag_len = 0;
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else
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tag_len = 1 << ( sec_level % 4 + 1);
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for( i = 0; i < source_address_len; i++ )
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iv[i] = source_address[i];
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for( i = 0; i < frame_counter_len; i++ )
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iv[source_address_len + i] = frame_counter[i];
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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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TEST_ASSERT( mbedtls_ccm_setkey( &ctx, cipher_id, key, key_len * 8 ) == 0 );
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ret = mbedtls_ccm_star_encrypt_and_tag( &ctx, msg_len, iv, iv_len,
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add, add_len, msg, msg, msg + msg_len, tag_len );
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TEST_ASSERT( ret == output_ret );
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TEST_ASSERT( memcmp( msg, result, result_len ) == 0 );
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/* Check we didn't write past the end */
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TEST_ASSERT( msg[result_len] == 0 && msg[result_len + 1] == 0 );
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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_star_auth_decrypt( int cipher_id,
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char *key_hex, char *msg_hex,
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char *source_address_hex, char *frame_counter_hex,
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int sec_level, char *add_hex,
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char *result_hex, int output_ret )
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{
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unsigned char key[32];
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unsigned char msg[50];
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unsigned char iv[13];
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unsigned char add[32];
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unsigned char tag[16];
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unsigned char result[50];
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unsigned char source_address[8];
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unsigned char frame_counter[4];
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mbedtls_ccm_context ctx;
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size_t i, key_len, msg_len, iv_len, add_len, tag_len, result_len, source_address_len, frame_counter_len;
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int ret;
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mbedtls_ccm_init( &ctx );
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memset( key, 0x00, sizeof( key ) );
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memset( msg, 0x00, sizeof( msg ) );
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memset( iv, 0x00, sizeof( iv ) );
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memset( add, 0x00, sizeof( add ) );
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memset( result, 0x00, sizeof( result ) );
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memset( source_address, 0x00, sizeof( source_address ) );
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memset( frame_counter, 0x00, sizeof( frame_counter ) );
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memset( tag, 0x00, sizeof( tag ) );
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key_len = unhexify( key, key_hex );
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msg_len = unhexify( msg, msg_hex );
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add_len = unhexify( add, add_hex );
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result_len = unhexify( result, result_hex );
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source_address_len = unhexify( source_address, source_address_hex );
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frame_counter_len = unhexify( frame_counter, frame_counter_hex );
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if( sec_level % 4 == 0)
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tag_len = 0;
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else
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tag_len = 1 << ( sec_level % 4 + 1);
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for( i = 0; i < source_address_len; i++ )
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iv[i] = source_address[i];
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for( i = 0; i < frame_counter_len; i++ )
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iv[source_address_len + i] = frame_counter[i];
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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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msg_len -= tag_len;
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memcpy( tag, msg + msg_len, tag_len );
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TEST_ASSERT( mbedtls_ccm_setkey( &ctx, cipher_id, key, key_len * 8 ) == 0 );
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ret = mbedtls_ccm_star_auth_decrypt( &ctx, msg_len, iv, iv_len,
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add, add_len, msg, msg, msg + msg_len, tag_len );
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TEST_ASSERT( ret == output_ret );
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TEST_ASSERT( memcmp( msg, result, result_len ) == 0 );
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/* Check we didn't write past the end (where the original tag is) */
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TEST_ASSERT( memcmp( msg + msg_len, tag, tag_len ) == 0 );
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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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