327 lines
10 KiB
Text
327 lines
10 KiB
Text
/* BEGIN_HEADER */
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#include <polarssl/cipher.h>
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/* END_HEADER */
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/* BEGIN_DEPENDENCIES
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* depends_on:POLARSSL_CIPHER_C
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* END_DEPENDENCIES
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*/
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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;
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unsigned char key[32];
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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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const cipher_info_t *cipher_info;
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cipher_context_t ctx_dec;
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cipher_context_t ctx_enc;
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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 total_len = 0;
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memset( key, 0, 32 );
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memset( iv , 0, 16 );
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memset( &ctx_dec, 0, sizeof( ctx_dec ) );
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memset( &ctx_enc, 0, sizeof( 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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memset( tag, 0, 16 );
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memset( ad, 0x2a, 13 );
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/* Check and get info structures */
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cipher_info = cipher_info_from_type( cipher_id );
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TEST_ASSERT( NULL != cipher_info );
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TEST_ASSERT( cipher_info_from_string( cipher_string ) == cipher_info );
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/* Initialise enc and dec contexts */
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TEST_ASSERT( 0 == cipher_init_ctx( &ctx_dec, cipher_info ) );
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TEST_ASSERT( 0 == cipher_init_ctx( &ctx_enc, cipher_info ) );
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TEST_ASSERT( 0 == cipher_setkey( &ctx_dec, key, key_len, POLARSSL_DECRYPT ) );
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TEST_ASSERT( 0 == cipher_setkey( &ctx_enc, key, key_len, POLARSSL_ENCRYPT ) );
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if( -1 != pad_mode )
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{
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TEST_ASSERT( 0 == cipher_set_padding_mode( &ctx_dec, pad_mode ) );
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TEST_ASSERT( 0 == cipher_set_padding_mode( &ctx_enc, pad_mode ) );
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}
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TEST_ASSERT( 0 == cipher_set_iv( &ctx_dec, iv, 16 ) );
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TEST_ASSERT( 0 == cipher_set_iv( &ctx_enc, iv, 16 ) );
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TEST_ASSERT( 0 == cipher_reset( &ctx_dec, ad, 13 ) );
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TEST_ASSERT( 0 == cipher_reset( &ctx_enc, ad, 13 ) );
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/* encode length number of bytes from inbuf */
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TEST_ASSERT( 0 == 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 % cipher_get_block_size( &ctx_enc ) == 0 &&
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total_len < length &&
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total_len + cipher_get_block_size( &ctx_enc ) > length ) );
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TEST_ASSERT( 0 == cipher_finish( &ctx_enc, encbuf + outlen, &outlen,
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tag, 16 ) );
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total_len += outlen;
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TEST_ASSERT( total_len == length ||
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( total_len % cipher_get_block_size( &ctx_enc ) == 0 &&
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total_len > length &&
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total_len <= length + cipher_get_block_size( &ctx_enc ) ) );
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/* decode the previously encoded string */
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TEST_ASSERT( 0 == 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 % cipher_get_block_size( &ctx_dec ) == 0 &&
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total_len < length &&
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total_len + cipher_get_block_size( &ctx_dec ) >= length ) );
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TEST_ASSERT( 0 == cipher_finish( &ctx_dec, decbuf + outlen, &outlen,
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tag, 16 ) );
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total_len += outlen;
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TEST_ASSERT( total_len == length );
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TEST_ASSERT( 0 == memcmp(inbuf, decbuf, length) );
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TEST_ASSERT( 0 == cipher_free_ctx( &ctx_dec ) );
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TEST_ASSERT( 0 == cipher_free_ctx( &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,
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int length_val, 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 cipher_info_t *cipher_info;
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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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memset( &ctx, 0, sizeof( 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 = 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 == cipher_init_ctx( &ctx, cipher_info ) );
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TEST_ASSERT( 0 == cipher_setkey( &ctx, key, key_len, POLARSSL_ENCRYPT ) );
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TEST_ASSERT( 0 == cipher_set_padding_mode( &ctx, pad_mode ) );
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TEST_ASSERT( 0 == cipher_set_iv( &ctx, iv, 16 ) );
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TEST_ASSERT( 0 == cipher_reset( &ctx, NULL, 0 ) );
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/* encode length number of bytes from inbuf */
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TEST_ASSERT( 0 == cipher_update( &ctx, inbuf, length, encbuf, &outlen ) );
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TEST_ASSERT( ret == cipher_finish( &ctx, encbuf + outlen, &outlen, NULL, 0 ) );
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/* done */
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TEST_ASSERT( 0 == cipher_free_ctx( &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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cipher_context_t ctx_dec;
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const 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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memset( &ctx_dec, 0, sizeof( 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 = cipher_info_from_type( POLARSSL_CIPHER_AES_128_CBC );
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TEST_ASSERT( NULL != cipher_info);
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TEST_ASSERT( 0 == cipher_init_ctx( &ctx_dec, cipher_info ) );
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TEST_ASSERT( 0 == cipher_setkey( &ctx_dec, key, 128, POLARSSL_DECRYPT ) );
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TEST_ASSERT( 0 == cipher_set_iv( &ctx_dec, iv, 16 ) );
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TEST_ASSERT( 0 == cipher_reset( &ctx_dec, NULL, 0 ) );
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/* decode 0-byte string */
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TEST_ASSERT( 0 == cipher_update( &ctx_dec, encbuf, 0, decbuf, &outlen ) );
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TEST_ASSERT( 0 == outlen );
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TEST_ASSERT( POLARSSL_ERR_CIPHER_FULL_BLOCK_EXPECTED == cipher_finish(
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&ctx_dec, decbuf + outlen, &outlen, NULL, 0 ) );
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TEST_ASSERT( 0 == outlen );
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TEST_ASSERT( 0 == cipher_free_ctx( &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 )
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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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unsigned char key[32];
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unsigned char iv[16];
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cipher_context_t ctx_dec;
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cipher_context_t ctx_enc;
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const 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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memset( &ctx_dec, 0, sizeof( ctx_dec ) );
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memset( &ctx_enc, 0, sizeof( 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 = cipher_info_from_type( cipher_id );
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TEST_ASSERT( NULL != cipher_info);
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TEST_ASSERT( 0 == cipher_init_ctx( &ctx_dec, cipher_info ) );
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TEST_ASSERT( 0 == cipher_init_ctx( &ctx_enc, cipher_info ) );
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TEST_ASSERT( 0 == cipher_setkey( &ctx_dec, key, key_len, POLARSSL_DECRYPT ) );
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TEST_ASSERT( 0 == cipher_setkey( &ctx_enc, key, key_len, POLARSSL_ENCRYPT ) );
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TEST_ASSERT( 0 == cipher_set_iv( &ctx_dec, iv, 16 ) );
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TEST_ASSERT( 0 == cipher_set_iv( &ctx_enc, iv, 16 ) );
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TEST_ASSERT( 0 == cipher_reset( &ctx_dec, NULL, 0 ) );
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TEST_ASSERT( 0 == cipher_reset( &ctx_enc, NULL, 0 ) );
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/* encode length number of bytes from inbuf */
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TEST_ASSERT( 0 == cipher_update( &ctx_enc, inbuf, first_length, encbuf, &outlen ) );
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totaloutlen = outlen;
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TEST_ASSERT( 0 == cipher_update( &ctx_enc, inbuf + first_length, second_length, encbuf + totaloutlen, &outlen ) );
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totaloutlen += outlen;
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TEST_ASSERT( totaloutlen == length ||
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( totaloutlen % cipher_get_block_size( &ctx_enc ) == 0 &&
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totaloutlen < length &&
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totaloutlen + cipher_get_block_size( &ctx_enc ) > length ) );
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TEST_ASSERT( 0 == cipher_finish( &ctx_enc, encbuf + totaloutlen, &outlen,
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NULL, 0 ) );
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totaloutlen += outlen;
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TEST_ASSERT( totaloutlen == length ||
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( totaloutlen % cipher_get_block_size( &ctx_enc ) == 0 &&
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totaloutlen > length &&
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totaloutlen <= length + cipher_get_block_size( &ctx_enc ) ) );
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/* decode the previously encoded string */
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TEST_ASSERT( 0 == cipher_update( &ctx_dec, encbuf, totaloutlen, decbuf, &outlen ) );
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totaloutlen = outlen;
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TEST_ASSERT( totaloutlen == length ||
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( totaloutlen % cipher_get_block_size( &ctx_dec ) == 0 &&
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totaloutlen < length &&
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totaloutlen + cipher_get_block_size( &ctx_dec ) >= length ) );
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TEST_ASSERT( 0 == cipher_finish( &ctx_dec, decbuf + outlen, &outlen,
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NULL, 0 ) );
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totaloutlen += outlen;
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TEST_ASSERT( totaloutlen == length );
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TEST_ASSERT( 0 == memcmp(inbuf, decbuf, length) );
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TEST_ASSERT( 0 == cipher_free_ctx( &ctx_dec ) );
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TEST_ASSERT( 0 == cipher_free_ctx( &ctx_enc ) );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void set_padding( int cipher_id, int pad_mode, int ret )
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{
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const cipher_info_t *cipher_info;
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cipher_context_t ctx;
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cipher_info = cipher_info_from_type( cipher_id );
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TEST_ASSERT( NULL != cipher_info );
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TEST_ASSERT( 0 == cipher_init_ctx( &ctx, cipher_info ) );
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TEST_ASSERT( ret == cipher_set_padding_mode( &ctx, pad_mode ) );
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TEST_ASSERT( 0 == cipher_free_ctx( &ctx ) );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void check_padding( int pad_mode, char *input_str, int ret, int dlen_check )
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{
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cipher_info_t cipher_info;
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cipher_context_t ctx;
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unsigned char input[16];
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size_t ilen, dlen;
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/* build a fake context just for getting access to get_padding */
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memset( &ctx, 0, sizeof( ctx ) );
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cipher_info.mode = POLARSSL_MODE_CBC;
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ctx.cipher_info = &cipher_info;
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TEST_ASSERT( 0 == cipher_set_padding_mode( &ctx, pad_mode ) );
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ilen = unhexify( input, input_str );
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TEST_ASSERT( ret == ctx.get_padding( input, ilen, &dlen ) );
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if( 0 == ret )
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TEST_ASSERT( dlen == (size_t) dlen_check );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void cipher_selftest()
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{
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TEST_ASSERT( cipher_self_test( 0 ) == 0 );
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}
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/* END_CASE */
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