677 lines
23 KiB
Text
677 lines
23 KiB
Text
/* BEGIN_HEADER */
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#include "mbedtls/cipher.h"
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#if defined(MBEDTLS_GCM_C)
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#include "mbedtls/gcm.h"
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#endif
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/* END_HEADER */
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/* BEGIN_DEPENDENCIES
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* depends_on:MBEDTLS_CIPHER_C
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* END_DEPENDENCIES
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*/
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/* BEGIN_CASE */
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void mbedtls_cipher_list( )
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{
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const int *cipher_type;
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for( cipher_type = mbedtls_cipher_list(); *cipher_type != 0; cipher_type++ )
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TEST_ASSERT( mbedtls_cipher_info_from_type( *cipher_type ) != NULL );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void cipher_null_args( )
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{
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mbedtls_cipher_context_t ctx;
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const mbedtls_cipher_info_t *info = mbedtls_cipher_info_from_type( *( mbedtls_cipher_list() ) );
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unsigned char buf[1] = { 0 };
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size_t olen;
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mbedtls_cipher_init( &ctx );
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TEST_ASSERT( mbedtls_cipher_get_block_size( NULL ) == 0 );
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TEST_ASSERT( mbedtls_cipher_get_block_size( &ctx ) == 0 );
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TEST_ASSERT( mbedtls_cipher_get_cipher_mode( NULL ) == MBEDTLS_MODE_NONE );
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TEST_ASSERT( mbedtls_cipher_get_cipher_mode( &ctx ) == MBEDTLS_MODE_NONE );
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TEST_ASSERT( mbedtls_cipher_get_iv_size( NULL ) == 0 );
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TEST_ASSERT( mbedtls_cipher_get_iv_size( &ctx ) == 0 );
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TEST_ASSERT( mbedtls_cipher_info_from_string( NULL ) == NULL );
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TEST_ASSERT( mbedtls_cipher_setup( &ctx, NULL )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_setup( NULL, info )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_setkey( NULL, buf, 0, MBEDTLS_ENCRYPT )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_setkey( &ctx, buf, 0, MBEDTLS_ENCRYPT )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_set_iv( NULL, buf, 0 )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_set_iv( &ctx, buf, 0 )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_reset( NULL ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_reset( &ctx ) == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
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TEST_ASSERT( mbedtls_cipher_update_ad( NULL, buf, 0 )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_update_ad( &ctx, buf, 0 )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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#endif
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TEST_ASSERT( mbedtls_cipher_update( NULL, buf, 0, buf, &olen )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_update( &ctx, buf, 0, buf, &olen )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_finish( NULL, buf, &olen )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_finish( &ctx, buf, &olen )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
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TEST_ASSERT( mbedtls_cipher_write_tag( NULL, buf, olen )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_write_tag( &ctx, buf, olen )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_check_tag( NULL, buf, olen )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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TEST_ASSERT( mbedtls_cipher_check_tag( &ctx, buf, olen )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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#endif
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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 cipher_special_behaviours( )
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{
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const mbedtls_cipher_info_t *cipher_info;
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mbedtls_cipher_context_t ctx;
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unsigned char input[32];
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unsigned char output[32];
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unsigned char iv[32];
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size_t olen = 0;
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mbedtls_cipher_init( &ctx );
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memset( input, 0, sizeof( input ) );
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memset( output, 0, sizeof( output ) );
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memset( iv, 0, sizeof( iv ) );
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/* Check and get info structures */
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cipher_info = mbedtls_cipher_info_from_type( MBEDTLS_CIPHER_AES_128_ECB );
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TEST_ASSERT( NULL != cipher_info );
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TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx, cipher_info ) );
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/* IV too big */
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TEST_ASSERT( mbedtls_cipher_set_iv( &ctx, iv, MBEDTLS_MAX_IV_LENGTH + 1 )
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== MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE );
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/* IV too small */
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TEST_ASSERT( mbedtls_cipher_set_iv( &ctx, iv, 0 )
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== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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/* Update ECB with partial block */
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TEST_ASSERT( mbedtls_cipher_update( &ctx, input, 1, output, &olen )
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== MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED );
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exit:
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mbedtls_cipher_free( &ctx );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void enc_dec_buf( int cipher_id, char * cipher_string, int key_len,
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int length_val, int pad_mode )
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{
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size_t length = length_val, outlen, total_len, i, block_size;
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unsigned char key[64];
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unsigned char iv[16];
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unsigned char ad[13];
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unsigned char tag[16];
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unsigned char inbuf[64];
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unsigned char encbuf[64];
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unsigned char decbuf[64];
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const mbedtls_cipher_info_t *cipher_info;
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mbedtls_cipher_context_t ctx_dec;
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mbedtls_cipher_context_t ctx_enc;
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/*
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* Prepare contexts
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*/
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mbedtls_cipher_init( &ctx_dec );
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mbedtls_cipher_init( &ctx_enc );
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memset( key, 0x2a, sizeof( key ) );
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/* Check and get info structures */
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cipher_info = mbedtls_cipher_info_from_type( cipher_id );
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TEST_ASSERT( NULL != cipher_info );
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TEST_ASSERT( mbedtls_cipher_info_from_string( cipher_string ) == cipher_info );
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/* Initialise enc and dec contexts */
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TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx_dec, cipher_info ) );
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TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx_enc, cipher_info ) );
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TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx_dec, key, key_len, MBEDTLS_DECRYPT ) );
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TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx_enc, key, key_len, MBEDTLS_ENCRYPT ) );
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#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
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if( -1 != pad_mode )
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{
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TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx_dec, pad_mode ) );
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TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx_enc, pad_mode ) );
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}
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#else
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(void) pad_mode;
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#endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */
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/*
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* Do a few encode/decode cycles
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*/
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for( i = 0; i < 3; i++ )
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{
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memset( iv , 0x00 + i, sizeof( iv ) );
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memset( ad, 0x10 + i, sizeof( ad ) );
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memset( inbuf, 0x20 + i, sizeof( inbuf ) );
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memset( encbuf, 0, sizeof( encbuf ) );
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memset( decbuf, 0, sizeof( decbuf ) );
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memset( tag, 0, sizeof( tag ) );
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TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx_dec, iv, sizeof( iv ) ) );
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TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx_enc, iv, sizeof( iv ) ) );
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TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx_dec ) );
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TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx_enc ) );
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#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
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TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx_dec, ad, sizeof( ad ) - i ) );
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TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx_enc, ad, sizeof( ad ) - i ) );
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#endif
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block_size = mbedtls_cipher_get_block_size( &ctx_enc );
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TEST_ASSERT( block_size != 0 );
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/* encode length number of bytes from inbuf */
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TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx_enc, inbuf, length, encbuf, &outlen ) );
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total_len = outlen;
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TEST_ASSERT( total_len == length ||
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( total_len % block_size == 0 &&
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total_len < length &&
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total_len + block_size > length ) );
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TEST_ASSERT( 0 == mbedtls_cipher_finish( &ctx_enc, encbuf + outlen, &outlen ) );
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total_len += outlen;
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#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
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TEST_ASSERT( 0 == mbedtls_cipher_write_tag( &ctx_enc, tag, sizeof( tag ) ) );
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#endif
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TEST_ASSERT( total_len == length ||
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( total_len % block_size == 0 &&
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total_len > length &&
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total_len <= length + block_size ) );
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/* decode the previously encoded string */
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TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx_dec, encbuf, total_len, decbuf, &outlen ) );
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total_len = outlen;
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TEST_ASSERT( total_len == length ||
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( total_len % block_size == 0 &&
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total_len < length &&
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total_len + block_size >= length ) );
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TEST_ASSERT( 0 == mbedtls_cipher_finish( &ctx_dec, decbuf + outlen, &outlen ) );
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total_len += outlen;
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#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
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TEST_ASSERT( 0 == mbedtls_cipher_check_tag( &ctx_dec, tag, sizeof( tag ) ) );
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#endif
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/* check result */
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TEST_ASSERT( total_len == length );
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TEST_ASSERT( 0 == memcmp(inbuf, decbuf, length) );
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}
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/*
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* Done
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*/
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exit:
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mbedtls_cipher_free( &ctx_dec );
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mbedtls_cipher_free( &ctx_enc );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void enc_fail( int cipher_id, int pad_mode, int key_len, int length_val,
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int ret )
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{
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size_t length = length_val;
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unsigned char key[32];
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unsigned char iv[16];
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const mbedtls_cipher_info_t *cipher_info;
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mbedtls_cipher_context_t ctx;
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unsigned char inbuf[64];
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unsigned char encbuf[64];
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size_t outlen = 0;
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memset( key, 0, 32 );
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memset( iv , 0, 16 );
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mbedtls_cipher_init( &ctx );
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memset( inbuf, 5, 64 );
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memset( encbuf, 0, 64 );
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/* Check and get info structures */
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cipher_info = mbedtls_cipher_info_from_type( cipher_id );
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TEST_ASSERT( NULL != cipher_info );
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/* Initialise context */
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TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx, cipher_info ) );
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TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx, key, key_len, MBEDTLS_ENCRYPT ) );
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#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
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TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx, pad_mode ) );
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#else
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(void) pad_mode;
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#endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */
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TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx, iv, 16 ) );
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TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx ) );
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#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
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TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx, NULL, 0 ) );
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#endif
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/* encode length number of bytes from inbuf */
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TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx, inbuf, length, encbuf, &outlen ) );
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TEST_ASSERT( ret == mbedtls_cipher_finish( &ctx, encbuf + outlen, &outlen ) );
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/* done */
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exit:
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mbedtls_cipher_free( &ctx );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void dec_empty_buf( )
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{
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unsigned char key[32];
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unsigned char iv[16];
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mbedtls_cipher_context_t ctx_dec;
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const mbedtls_cipher_info_t *cipher_info;
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unsigned char encbuf[64];
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unsigned char decbuf[64];
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size_t outlen = 0;
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memset( key, 0, 32 );
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memset( iv , 0, 16 );
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mbedtls_cipher_init( &ctx_dec );
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memset( encbuf, 0, 64 );
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memset( decbuf, 0, 64 );
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/* Initialise context */
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cipher_info = mbedtls_cipher_info_from_type( MBEDTLS_CIPHER_AES_128_CBC );
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TEST_ASSERT( NULL != cipher_info);
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TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx_dec, cipher_info ) );
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TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx_dec, key, 128, MBEDTLS_DECRYPT ) );
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TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx_dec, iv, 16 ) );
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TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx_dec ) );
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#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
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TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx_dec, NULL, 0 ) );
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#endif
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/* decode 0-byte string */
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TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx_dec, encbuf, 0, decbuf, &outlen ) );
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TEST_ASSERT( 0 == outlen );
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TEST_ASSERT( MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED == mbedtls_cipher_finish(
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&ctx_dec, decbuf + outlen, &outlen ) );
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TEST_ASSERT( 0 == outlen );
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exit:
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mbedtls_cipher_free( &ctx_dec );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void enc_dec_buf_multipart( int cipher_id, int key_len, int first_length_val,
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int second_length_val, int pad_mode,
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int first_encrypt_output_len, int second_encrypt_output_len,
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int first_decrypt_output_len, int second_decrypt_output_len )
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{
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size_t first_length = first_length_val;
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size_t second_length = second_length_val;
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size_t length = first_length + second_length;
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size_t block_size;
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unsigned char key[32];
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unsigned char iv[16];
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mbedtls_cipher_context_t ctx_dec;
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mbedtls_cipher_context_t ctx_enc;
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const mbedtls_cipher_info_t *cipher_info;
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unsigned char inbuf[64];
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unsigned char encbuf[64];
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unsigned char decbuf[64];
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size_t outlen = 0;
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size_t totaloutlen = 0;
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memset( key, 0, 32 );
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memset( iv , 0, 16 );
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mbedtls_cipher_init( &ctx_dec );
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mbedtls_cipher_init( &ctx_enc );
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memset( inbuf, 5, 64 );
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memset( encbuf, 0, 64 );
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memset( decbuf, 0, 64 );
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/* Initialise enc and dec contexts */
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cipher_info = mbedtls_cipher_info_from_type( cipher_id );
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TEST_ASSERT( NULL != cipher_info);
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TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx_dec, cipher_info ) );
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TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx_enc, cipher_info ) );
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TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx_dec, key, key_len, MBEDTLS_DECRYPT ) );
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TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx_enc, key, key_len, MBEDTLS_ENCRYPT ) );
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#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
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if( -1 != pad_mode )
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{
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TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx_dec, pad_mode ) );
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TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx_enc, pad_mode ) );
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}
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#else
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(void) pad_mode;
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#endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */
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TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx_dec, iv, 16 ) );
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TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx_enc, iv, 16 ) );
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TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx_dec ) );
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TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx_enc ) );
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#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
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TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx_dec, NULL, 0 ) );
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TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx_enc, NULL, 0 ) );
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#endif
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block_size = mbedtls_cipher_get_block_size( &ctx_enc );
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TEST_ASSERT( block_size != 0 );
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/* encode length number of bytes from inbuf */
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TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx_enc, inbuf, first_length, encbuf, &outlen ) );
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TEST_ASSERT( (size_t)first_encrypt_output_len == outlen );
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totaloutlen = outlen;
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TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx_enc, inbuf + first_length, second_length, encbuf + totaloutlen, &outlen ) );
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TEST_ASSERT( (size_t)second_encrypt_output_len == outlen );
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totaloutlen += outlen;
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TEST_ASSERT( totaloutlen == length ||
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( totaloutlen % block_size == 0 &&
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totaloutlen < length &&
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totaloutlen + block_size > length ) );
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TEST_ASSERT( 0 == mbedtls_cipher_finish( &ctx_enc, encbuf + totaloutlen, &outlen ) );
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totaloutlen += outlen;
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TEST_ASSERT( totaloutlen == length ||
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( totaloutlen % block_size == 0 &&
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totaloutlen > length &&
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totaloutlen <= length + block_size ) );
|
|
|
|
/* decode the previously encoded string */
|
|
second_length = totaloutlen - first_length;
|
|
TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx_dec, encbuf, first_length, decbuf, &outlen ) );
|
|
TEST_ASSERT( (size_t)first_decrypt_output_len == outlen );
|
|
totaloutlen = outlen;
|
|
TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx_dec, encbuf + first_length, second_length, decbuf + totaloutlen, &outlen ) );
|
|
TEST_ASSERT( (size_t)second_decrypt_output_len == outlen );
|
|
totaloutlen += outlen;
|
|
|
|
TEST_ASSERT( totaloutlen == length ||
|
|
( totaloutlen % block_size == 0 &&
|
|
totaloutlen < length &&
|
|
totaloutlen + block_size >= length ) );
|
|
|
|
TEST_ASSERT( 0 == mbedtls_cipher_finish( &ctx_dec, decbuf + totaloutlen, &outlen ) );
|
|
totaloutlen += outlen;
|
|
|
|
TEST_ASSERT( totaloutlen == length );
|
|
|
|
TEST_ASSERT( 0 == memcmp(inbuf, decbuf, length) );
|
|
|
|
exit:
|
|
mbedtls_cipher_free( &ctx_dec );
|
|
mbedtls_cipher_free( &ctx_enc );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* BEGIN_CASE */
|
|
void decrypt_test_vec( int cipher_id, int pad_mode, HexParam_t * key,
|
|
HexParam_t * iv, HexParam_t * cipher,
|
|
HexParam_t * clear, HexParam_t * ad, HexParam_t * tag,
|
|
int finish_result, int tag_result )
|
|
{
|
|
unsigned char output[265];
|
|
mbedtls_cipher_context_t ctx;
|
|
size_t outlen, total_len;
|
|
|
|
mbedtls_cipher_init( &ctx );
|
|
|
|
memset( output, 0x00, sizeof( output ) );
|
|
|
|
#if !defined(MBEDTLS_GCM_C) && !defined(MBEDTLS_CHACHAPOLY_C)
|
|
((void) ad);
|
|
((void) tag);
|
|
#endif
|
|
|
|
/* Prepare context */
|
|
TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx,
|
|
mbedtls_cipher_info_from_type( cipher_id ) ) );
|
|
TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx, key->x, 8 * key->len, MBEDTLS_DECRYPT ) );
|
|
#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
|
|
if( pad_mode != -1 )
|
|
TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx, pad_mode ) );
|
|
#else
|
|
(void) pad_mode;
|
|
#endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */
|
|
TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx, iv->x, iv->len ) );
|
|
TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx ) );
|
|
#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
|
|
TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx, ad->x, ad->len ) );
|
|
#endif
|
|
|
|
/* decode buffer and check tag->x */
|
|
total_len = 0;
|
|
TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx, cipher->x, cipher->len, output, &outlen ) );
|
|
total_len += outlen;
|
|
TEST_ASSERT( finish_result == mbedtls_cipher_finish( &ctx, output + outlen,
|
|
&outlen ) );
|
|
total_len += outlen;
|
|
#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
|
|
TEST_ASSERT( tag_result == mbedtls_cipher_check_tag( &ctx, tag->x, tag->len ) );
|
|
#endif
|
|
|
|
/* check plaintext only if everything went fine */
|
|
if( 0 == finish_result && 0 == tag_result )
|
|
{
|
|
TEST_ASSERT( total_len == clear->len );
|
|
TEST_ASSERT( 0 == memcmp( output, clear->x, clear->len ) );
|
|
}
|
|
|
|
exit:
|
|
mbedtls_cipher_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_AEAD */
|
|
void auth_crypt_tv( int cipher_id, HexParam_t * key, HexParam_t * iv,
|
|
HexParam_t * ad, HexParam_t * cipher, HexParam_t * tag,
|
|
char * result, HexParam_t * clear )
|
|
{
|
|
int ret;
|
|
unsigned char output[267]; /* above + 2 (overwrite check) */
|
|
unsigned char my_tag[20];
|
|
mbedtls_cipher_context_t ctx;
|
|
size_t outlen;
|
|
|
|
mbedtls_cipher_init( &ctx );
|
|
|
|
memset( output, 0xFF, sizeof( output ) );
|
|
memset( my_tag, 0xFF, sizeof( my_tag ) );
|
|
|
|
|
|
/* Prepare context */
|
|
TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx,
|
|
mbedtls_cipher_info_from_type( cipher_id ) ) );
|
|
TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx, key->x, 8 * key->len, MBEDTLS_DECRYPT ) );
|
|
|
|
/* decode buffer and check tag->x */
|
|
ret = mbedtls_cipher_auth_decrypt( &ctx, iv->x, iv->len, ad->x, ad->len,
|
|
cipher->x, cipher->len, output, &outlen,
|
|
tag->x, tag->len );
|
|
|
|
/* make sure we didn't overwrite */
|
|
TEST_ASSERT( output[outlen + 0] == 0xFF );
|
|
TEST_ASSERT( output[outlen + 1] == 0xFF );
|
|
|
|
/* make sure the message is rejected if it should be */
|
|
if( strcmp( result, "FAIL" ) == 0 )
|
|
{
|
|
TEST_ASSERT( ret == MBEDTLS_ERR_CIPHER_AUTH_FAILED );
|
|
goto exit;
|
|
}
|
|
|
|
/* otherwise, make sure it was decrypted properly */
|
|
TEST_ASSERT( ret == 0 );
|
|
|
|
TEST_ASSERT( outlen == clear->len );
|
|
TEST_ASSERT( memcmp( output, clear->x, clear->len ) == 0 );
|
|
|
|
/* then encrypt the clear->x and make sure we get the same ciphertext and tag->x */
|
|
memset( output, 0xFF, sizeof( output ) );
|
|
outlen = 0;
|
|
|
|
ret = mbedtls_cipher_auth_encrypt( &ctx, iv->x, iv->len, ad->x, ad->len,
|
|
clear->x, clear->len, output, &outlen,
|
|
my_tag, tag->len );
|
|
TEST_ASSERT( ret == 0 );
|
|
|
|
TEST_ASSERT( outlen == clear->len );
|
|
TEST_ASSERT( memcmp( output, cipher->x, clear->len ) == 0 );
|
|
TEST_ASSERT( memcmp( my_tag, tag->x, tag->len ) == 0 );
|
|
|
|
/* make sure we didn't overwrite */
|
|
TEST_ASSERT( output[outlen + 0] == 0xFF );
|
|
TEST_ASSERT( output[outlen + 1] == 0xFF );
|
|
TEST_ASSERT( my_tag[tag->len + 0] == 0xFF );
|
|
TEST_ASSERT( my_tag[tag->len + 1] == 0xFF );
|
|
|
|
|
|
exit:
|
|
mbedtls_cipher_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* BEGIN_CASE */
|
|
void test_vec_ecb( int cipher_id, int operation, HexParam_t * key,
|
|
HexParam_t * input, HexParam_t * result, int finish_result
|
|
)
|
|
{
|
|
mbedtls_cipher_context_t ctx;
|
|
unsigned char output[32];
|
|
size_t outlen;
|
|
|
|
mbedtls_cipher_init( &ctx );
|
|
|
|
memset( output, 0x00, sizeof( output ) );
|
|
|
|
/* Prepare context */
|
|
TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx,
|
|
mbedtls_cipher_info_from_type( cipher_id ) ) );
|
|
|
|
|
|
TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx, key->x, 8 * key->len, operation ) );
|
|
|
|
TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx, input->x,
|
|
mbedtls_cipher_get_block_size( &ctx ),
|
|
output, &outlen ) );
|
|
TEST_ASSERT( outlen == mbedtls_cipher_get_block_size( &ctx ) );
|
|
TEST_ASSERT( finish_result == mbedtls_cipher_finish( &ctx, output + outlen,
|
|
&outlen ) );
|
|
TEST_ASSERT( 0 == outlen );
|
|
|
|
/* check plaintext only if everything went fine */
|
|
if( 0 == finish_result )
|
|
TEST_ASSERT( 0 == memcmp( output, result->x,
|
|
mbedtls_cipher_get_block_size( &ctx ) ) );
|
|
|
|
exit:
|
|
mbedtls_cipher_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_WITH_PADDING */
|
|
void set_padding( int cipher_id, int pad_mode, int ret )
|
|
{
|
|
const mbedtls_cipher_info_t *cipher_info;
|
|
mbedtls_cipher_context_t ctx;
|
|
|
|
mbedtls_cipher_init( &ctx );
|
|
|
|
cipher_info = mbedtls_cipher_info_from_type( cipher_id );
|
|
TEST_ASSERT( NULL != cipher_info );
|
|
TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx, cipher_info ) );
|
|
|
|
TEST_ASSERT( ret == mbedtls_cipher_set_padding_mode( &ctx, pad_mode ) );
|
|
|
|
exit:
|
|
mbedtls_cipher_free( &ctx );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_CBC */
|
|
void check_padding( int pad_mode, HexParam_t * input, int ret, int dlen_check
|
|
)
|
|
{
|
|
mbedtls_cipher_info_t cipher_info;
|
|
mbedtls_cipher_context_t ctx;
|
|
size_t dlen;
|
|
|
|
/* build a fake context just for getting access to get_padding */
|
|
mbedtls_cipher_init( &ctx );
|
|
cipher_info.mode = MBEDTLS_MODE_CBC;
|
|
ctx.cipher_info = &cipher_info;
|
|
|
|
TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx, pad_mode ) );
|
|
|
|
|
|
TEST_ASSERT( ret == ctx.get_padding( input->x, input->len, &dlen ) );
|
|
if( 0 == ret )
|
|
TEST_ASSERT( dlen == (size_t) dlen_check );
|
|
}
|
|
/* END_CASE */
|