| /* BEGIN_HEADER */ |
| #include "mbedtls/cipher.h" |
| |
| #if defined(MBEDTLS_AES_C) |
| #include "mbedtls/aes.h" |
| #endif |
| |
| #if defined(MBEDTLS_GCM_C) |
| #include "mbedtls/gcm.h" |
| #endif |
| |
| #if defined(MBEDTLS_CIPHER_MODE_AEAD) || defined(MBEDTLS_NIST_KW_C) |
| #define MBEDTLS_CIPHER_AUTH_CRYPT |
| #endif |
| |
| #if defined(MBEDTLS_CIPHER_AUTH_CRYPT) |
| /* Helper for resetting key/direction |
| * |
| * The documentation doesn't explicitly say whether calling |
| * mbedtls_cipher_setkey() twice is allowed or not. This currently works with |
| * the default software implementation, but only by accident. It isn't |
| * guaranteed to work with new ciphers or with alternative implementations of |
| * individual ciphers, and it doesn't work with the PSA wrappers. So don't do |
| * it, and instead start with a fresh context. |
| */ |
| static int cipher_reset_key( mbedtls_cipher_context_t *ctx, int cipher_id, |
| int use_psa, size_t tag_len, const data_t *key, int direction ) |
| { |
| mbedtls_cipher_free( ctx ); |
| mbedtls_cipher_init( ctx ); |
| |
| #if !defined(MBEDTLS_USE_PSA_CRYPTO) |
| (void) use_psa; |
| (void) tag_len; |
| #else |
| if( use_psa == 1 ) |
| { |
| TEST_ASSERT( 0 == mbedtls_cipher_setup_psa( ctx, |
| mbedtls_cipher_info_from_type( cipher_id ), |
| tag_len ) ); |
| } |
| else |
| #endif /* MBEDTLS_USE_PSA_CRYPTO */ |
| { |
| 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, |
| direction ) ); |
| return( 1 ); |
| |
| exit: |
| return( 0 ); |
| } |
| |
| /* |
| * Check if a buffer is all-0 bytes: |
| * return 1 if it is, |
| * 0 if it isn't. |
| */ |
| int buffer_is_all_zero( const uint8_t *buf, size_t size ) |
| { |
| for( size_t i = 0; i < size; i++ ) |
| if( buf[i] != 0 ) |
| return 0; |
| return 1; |
| } |
| #endif /* MBEDTLS_CIPHER_AUTH_CRYPT */ |
| |
| /* END_HEADER */ |
| |
| /* BEGIN_DEPENDENCIES |
| * depends_on:MBEDTLS_CIPHER_C |
| * END_DEPENDENCIES |
| */ |
| |
| /* BEGIN_CASE */ |
| void mbedtls_cipher_list( ) |
| { |
| const int *cipher_type; |
| |
| for( cipher_type = mbedtls_cipher_list(); *cipher_type != 0; cipher_type++ ) |
| TEST_ASSERT( mbedtls_cipher_info_from_type( *cipher_type ) != NULL ); |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE */ |
| void cipher_invalid_param_unconditional( ) |
| { |
| mbedtls_cipher_context_t valid_ctx; |
| mbedtls_cipher_context_t invalid_ctx; |
| mbedtls_operation_t valid_operation = MBEDTLS_ENCRYPT; |
| mbedtls_cipher_padding_t valid_mode = MBEDTLS_PADDING_ZEROS; |
| unsigned char valid_buffer[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; |
| int valid_size = sizeof(valid_buffer); |
| int valid_bitlen = valid_size * 8; |
| const mbedtls_cipher_info_t *valid_info = mbedtls_cipher_info_from_type( |
| *( mbedtls_cipher_list() ) ); |
| size_t size_t_var; |
| |
| (void)valid_mode; /* In some configurations this is unused */ |
| |
| mbedtls_cipher_init( &valid_ctx ); |
| mbedtls_cipher_setup( &valid_ctx, valid_info ); |
| mbedtls_cipher_init( &invalid_ctx ); |
| |
| /* mbedtls_cipher_setup() */ |
| TEST_ASSERT( mbedtls_cipher_setup( &valid_ctx, NULL ) == |
| MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| |
| /* mbedtls_cipher_get_block_size() */ |
| TEST_ASSERT( mbedtls_cipher_get_block_size( &invalid_ctx ) == 0 ); |
| |
| /* mbedtls_cipher_get_cipher_mode() */ |
| TEST_ASSERT( mbedtls_cipher_get_cipher_mode( &invalid_ctx ) == |
| MBEDTLS_MODE_NONE ); |
| |
| /* mbedtls_cipher_get_iv_size() */ |
| TEST_ASSERT( mbedtls_cipher_get_iv_size( &invalid_ctx ) == 0 ); |
| |
| /* mbedtls_cipher_get_type() */ |
| TEST_ASSERT( |
| mbedtls_cipher_get_type( &invalid_ctx ) == |
| MBEDTLS_CIPHER_NONE); |
| |
| /* mbedtls_cipher_get_name() */ |
| TEST_ASSERT( mbedtls_cipher_get_name( &invalid_ctx ) == 0 ); |
| |
| /* mbedtls_cipher_get_key_bitlen() */ |
| TEST_ASSERT( mbedtls_cipher_get_key_bitlen( &invalid_ctx ) == |
| MBEDTLS_KEY_LENGTH_NONE ); |
| |
| /* mbedtls_cipher_get_operation() */ |
| TEST_ASSERT( mbedtls_cipher_get_operation( &invalid_ctx ) == |
| MBEDTLS_OPERATION_NONE ); |
| |
| /* mbedtls_cipher_setkey() */ |
| TEST_ASSERT( |
| mbedtls_cipher_setkey( &invalid_ctx, |
| valid_buffer, |
| valid_bitlen, |
| valid_operation ) == |
| MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| |
| /* mbedtls_cipher_set_iv() */ |
| TEST_ASSERT( |
| mbedtls_cipher_set_iv( &invalid_ctx, |
| valid_buffer, |
| valid_size ) == |
| MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| |
| /* mbedtls_cipher_reset() */ |
| TEST_ASSERT( mbedtls_cipher_reset( &invalid_ctx ) == |
| MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| |
| #if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) |
| /* mbedtls_cipher_update_ad() */ |
| TEST_ASSERT( |
| mbedtls_cipher_update_ad( &invalid_ctx, |
| valid_buffer, |
| valid_size ) == |
| MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| #endif /* defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) */ |
| |
| #if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING) |
| /* mbedtls_cipher_set_padding_mode() */ |
| TEST_ASSERT( mbedtls_cipher_set_padding_mode( &invalid_ctx, valid_mode ) == |
| MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| #endif |
| |
| /* mbedtls_cipher_update() */ |
| TEST_ASSERT( |
| mbedtls_cipher_update( &invalid_ctx, |
| valid_buffer, |
| valid_size, |
| valid_buffer, |
| &size_t_var ) == |
| MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| |
| /* mbedtls_cipher_finish() */ |
| TEST_ASSERT( |
| mbedtls_cipher_finish( &invalid_ctx, |
| valid_buffer, |
| &size_t_var ) == |
| MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| |
| #if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) |
| /* mbedtls_cipher_write_tag() */ |
| TEST_ASSERT( |
| mbedtls_cipher_write_tag( &invalid_ctx, |
| valid_buffer, |
| valid_size ) == |
| MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| |
| /* mbedtls_cipher_check_tag() */ |
| TEST_ASSERT( |
| mbedtls_cipher_check_tag( &invalid_ctx, |
| valid_buffer, |
| valid_size ) == |
| MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| #endif /* defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) */ |
| |
| exit: |
| mbedtls_cipher_free( &invalid_ctx ); |
| mbedtls_cipher_free( &valid_ctx ); |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE depends_on:NOT_DEFINED */ |
| void cipher_invalid_param_conditional( ) |
| { |
| mbedtls_cipher_context_t valid_ctx; |
| |
| mbedtls_operation_t invalid_operation = 100; |
| unsigned char valid_buffer[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; |
| int valid_size = sizeof(valid_buffer); |
| int valid_bitlen = valid_size * 8; |
| const mbedtls_cipher_info_t *valid_info = mbedtls_cipher_info_from_type( |
| *( mbedtls_cipher_list() ) ); |
| |
| TEST_EQUAL( |
| MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA, |
| mbedtls_cipher_setkey( &valid_ctx, |
| valid_buffer, |
| valid_bitlen, |
| invalid_operation ) ); |
| |
| exit: |
| ; |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE depends_on:MBEDTLS_AES_C */ |
| void cipher_special_behaviours( ) |
| { |
| const mbedtls_cipher_info_t *cipher_info; |
| mbedtls_cipher_context_t ctx; |
| unsigned char input[32]; |
| unsigned char output[32]; |
| #if defined (MBEDTLS_CIPHER_MODE_CBC) |
| unsigned char iv[32]; |
| #endif |
| size_t olen = 0; |
| |
| mbedtls_cipher_init( &ctx ); |
| memset( input, 0, sizeof( input ) ); |
| memset( output, 0, sizeof( output ) ); |
| #if defined(MBEDTLS_CIPHER_MODE_CBC) |
| memset( iv, 0, sizeof( iv ) ); |
| |
| /* Check and get info structures */ |
| cipher_info = mbedtls_cipher_info_from_type( MBEDTLS_CIPHER_AES_128_CBC ); |
| TEST_ASSERT( NULL != cipher_info ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx, cipher_info ) ); |
| |
| /* IV too big */ |
| TEST_ASSERT( mbedtls_cipher_set_iv( &ctx, iv, MBEDTLS_MAX_IV_LENGTH + 1 ) |
| == MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE ); |
| |
| /* IV too small */ |
| TEST_ASSERT( mbedtls_cipher_set_iv( &ctx, iv, 0 ) |
| == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| |
| mbedtls_cipher_free( &ctx ); |
| mbedtls_cipher_init( &ctx ); |
| #endif /* MBEDTLS_CIPHER_MODE_CBC */ |
| cipher_info = mbedtls_cipher_info_from_type( MBEDTLS_CIPHER_AES_128_ECB ); |
| TEST_ASSERT( NULL != cipher_info ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx, cipher_info ) ); |
| |
| /* Update ECB with partial block */ |
| TEST_ASSERT( mbedtls_cipher_update( &ctx, input, 1, output, &olen ) |
| == MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED ); |
| |
| exit: |
| mbedtls_cipher_free( &ctx ); |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE */ |
| void enc_dec_buf( int cipher_id, char * cipher_string, int key_len, |
| int length_val, int pad_mode ) |
| { |
| size_t length = length_val, outlen, total_len, i, block_size; |
| unsigned char key[64]; |
| unsigned char iv[16]; |
| unsigned char ad[13]; |
| unsigned char tag[16]; |
| unsigned char inbuf[64]; |
| unsigned char encbuf[64]; |
| unsigned char decbuf[64]; |
| |
| const mbedtls_cipher_info_t *cipher_info; |
| mbedtls_cipher_context_t ctx_dec; |
| mbedtls_cipher_context_t ctx_enc; |
| |
| /* |
| * Prepare contexts |
| */ |
| mbedtls_cipher_init( &ctx_dec ); |
| mbedtls_cipher_init( &ctx_enc ); |
| |
| memset( key, 0x2a, sizeof( key ) ); |
| |
| /* Check and get info structures */ |
| cipher_info = mbedtls_cipher_info_from_type( cipher_id ); |
| TEST_ASSERT( NULL != cipher_info ); |
| TEST_ASSERT( mbedtls_cipher_info_from_string( cipher_string ) == cipher_info ); |
| |
| /* Initialise enc and dec contexts */ |
| TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx_dec, cipher_info ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx_enc, cipher_info ) ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx_dec, key, key_len, MBEDTLS_DECRYPT ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx_enc, key, key_len, MBEDTLS_ENCRYPT ) ); |
| |
| #if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING) |
| if( -1 != pad_mode ) |
| { |
| TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx_dec, pad_mode ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx_enc, pad_mode ) ); |
| } |
| #else |
| (void) pad_mode; |
| #endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */ |
| |
| /* |
| * Do a few encode/decode cycles |
| */ |
| for( i = 0; i < 3; i++ ) |
| { |
| memset( iv , 0x00 + i, sizeof( iv ) ); |
| memset( ad, 0x10 + i, sizeof( ad ) ); |
| memset( inbuf, 0x20 + i, sizeof( inbuf ) ); |
| |
| memset( encbuf, 0, sizeof( encbuf ) ); |
| memset( decbuf, 0, sizeof( decbuf ) ); |
| memset( tag, 0, sizeof( tag ) ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx_dec, iv, sizeof( iv ) ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx_enc, iv, sizeof( iv ) ) ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx_dec ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx_enc ) ); |
| |
| #if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) |
| TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx_dec, ad, sizeof( ad ) - i ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx_enc, ad, sizeof( ad ) - i ) ); |
| #endif |
| |
| block_size = mbedtls_cipher_get_block_size( &ctx_enc ); |
| TEST_ASSERT( block_size != 0 ); |
| |
| /* encode length number of bytes from inbuf */ |
| TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx_enc, inbuf, length, encbuf, &outlen ) ); |
| total_len = outlen; |
| |
| TEST_ASSERT( total_len == length || |
| ( total_len % block_size == 0 && |
| total_len < length && |
| total_len + block_size > length ) ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_finish( &ctx_enc, encbuf + outlen, &outlen ) ); |
| total_len += outlen; |
| |
| #if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) |
| TEST_ASSERT( 0 == mbedtls_cipher_write_tag( &ctx_enc, tag, sizeof( tag ) ) ); |
| #endif |
| |
| TEST_ASSERT( total_len == length || |
| ( total_len % block_size == 0 && |
| total_len > length && |
| total_len <= length + block_size ) ); |
| |
| /* decode the previously encoded string */ |
| TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx_dec, encbuf, total_len, decbuf, &outlen ) ); |
| total_len = outlen; |
| |
| TEST_ASSERT( total_len == length || |
| ( total_len % block_size == 0 && |
| total_len < length && |
| total_len + block_size >= length ) ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_finish( &ctx_dec, decbuf + outlen, &outlen ) ); |
| total_len += outlen; |
| |
| #if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) |
| TEST_ASSERT( 0 == mbedtls_cipher_check_tag( &ctx_dec, tag, sizeof( tag ) ) ); |
| #endif |
| |
| /* check result */ |
| TEST_ASSERT( total_len == length ); |
| TEST_ASSERT( 0 == memcmp(inbuf, decbuf, length) ); |
| } |
| |
| /* |
| * Done |
| */ |
| exit: |
| mbedtls_cipher_free( &ctx_dec ); |
| mbedtls_cipher_free( &ctx_enc ); |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE */ |
| void enc_fail( int cipher_id, int pad_mode, int key_len, int length_val, |
| int ret ) |
| { |
| size_t length = length_val; |
| unsigned char key[32]; |
| unsigned char iv[16]; |
| |
| const mbedtls_cipher_info_t *cipher_info; |
| mbedtls_cipher_context_t ctx; |
| |
| unsigned char inbuf[64]; |
| unsigned char encbuf[64]; |
| |
| size_t outlen = 0; |
| |
| memset( key, 0, 32 ); |
| memset( iv , 0, 16 ); |
| |
| mbedtls_cipher_init( &ctx ); |
| |
| memset( inbuf, 5, 64 ); |
| memset( encbuf, 0, 64 ); |
| |
| /* Check and get info structures */ |
| cipher_info = mbedtls_cipher_info_from_type( cipher_id ); |
| TEST_ASSERT( NULL != cipher_info ); |
| |
| /* Initialise context */ |
| TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx, cipher_info ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx, key, key_len, MBEDTLS_ENCRYPT ) ); |
| #if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING) |
| 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, 16 ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx ) ); |
| #if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) |
| TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx, NULL, 0 ) ); |
| #endif |
| |
| /* encode length number of bytes from inbuf */ |
| TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx, inbuf, length, encbuf, &outlen ) ); |
| TEST_ASSERT( ret == mbedtls_cipher_finish( &ctx, encbuf + outlen, &outlen ) ); |
| |
| /* done */ |
| exit: |
| mbedtls_cipher_free( &ctx ); |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE */ |
| void dec_empty_buf( int cipher, |
| int expected_update_ret, |
| int expected_finish_ret ) |
| { |
| unsigned char key[32]; |
| unsigned char iv[16]; |
| |
| mbedtls_cipher_context_t ctx_dec; |
| const mbedtls_cipher_info_t *cipher_info; |
| |
| unsigned char encbuf[64]; |
| unsigned char decbuf[64]; |
| |
| size_t outlen = 0; |
| |
| memset( key, 0, 32 ); |
| memset( iv , 0, 16 ); |
| |
| mbedtls_cipher_init( &ctx_dec ); |
| |
| memset( encbuf, 0, 64 ); |
| memset( decbuf, 0, 64 ); |
| |
| /* Initialise context */ |
| cipher_info = mbedtls_cipher_info_from_type( cipher ); |
| TEST_ASSERT( NULL != cipher_info); |
| TEST_ASSERT( sizeof(key) * 8 >= cipher_info->key_bitlen ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx_dec, cipher_info ) ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx_dec, |
| key, cipher_info->key_bitlen, |
| MBEDTLS_DECRYPT ) ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx_dec, iv, 16 ) ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx_dec ) ); |
| |
| #if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) |
| TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx_dec, NULL, 0 ) ); |
| #endif |
| |
| /* decode 0-byte string */ |
| TEST_ASSERT( expected_update_ret == |
| mbedtls_cipher_update( &ctx_dec, encbuf, 0, decbuf, &outlen ) ); |
| TEST_ASSERT( 0 == outlen ); |
| |
| if ( expected_finish_ret == 0 && |
| ( cipher_info->mode == MBEDTLS_MODE_CBC || |
| cipher_info->mode == MBEDTLS_MODE_ECB ) ) |
| { |
| /* Non-CBC and non-ECB ciphers are OK with decrypting empty buffers and |
| * return success, not MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED, when |
| * decrypting an empty buffer. |
| * On the other hand, CBC and ECB ciphers need a full block of input. |
| */ |
| expected_finish_ret = MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED; |
| } |
| |
| TEST_ASSERT( expected_finish_ret == mbedtls_cipher_finish( |
| &ctx_dec, decbuf + outlen, &outlen ) ); |
| TEST_ASSERT( 0 == outlen ); |
| |
| exit: |
| mbedtls_cipher_free( &ctx_dec ); |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE */ |
| void enc_dec_buf_multipart( int cipher_id, int key_len, int first_length_val, |
| int second_length_val, int pad_mode, |
| int first_encrypt_output_len, int second_encrypt_output_len, |
| int first_decrypt_output_len, int second_decrypt_output_len ) |
| { |
| size_t first_length = first_length_val; |
| size_t second_length = second_length_val; |
| size_t length = first_length + second_length; |
| size_t block_size; |
| unsigned char key[32]; |
| unsigned char iv[16]; |
| |
| mbedtls_cipher_context_t ctx_dec; |
| mbedtls_cipher_context_t ctx_enc; |
| const mbedtls_cipher_info_t *cipher_info; |
| |
| unsigned char inbuf[64]; |
| unsigned char encbuf[64]; |
| unsigned char decbuf[64]; |
| |
| size_t outlen = 0; |
| size_t totaloutlen = 0; |
| |
| memset( key, 0, 32 ); |
| memset( iv , 0, 16 ); |
| |
| mbedtls_cipher_init( &ctx_dec ); |
| mbedtls_cipher_init( &ctx_enc ); |
| |
| memset( inbuf, 5, 64 ); |
| memset( encbuf, 0, 64 ); |
| memset( decbuf, 0, 64 ); |
| |
| /* Initialise enc and dec contexts */ |
| cipher_info = mbedtls_cipher_info_from_type( cipher_id ); |
| TEST_ASSERT( NULL != cipher_info); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx_dec, cipher_info ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_setup( &ctx_enc, cipher_info ) ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx_dec, key, key_len, MBEDTLS_DECRYPT ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_setkey( &ctx_enc, key, key_len, MBEDTLS_ENCRYPT ) ); |
| |
| #if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING) |
| if( -1 != pad_mode ) |
| { |
| TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx_dec, pad_mode ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx_enc, pad_mode ) ); |
| } |
| #else |
| (void) pad_mode; |
| #endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */ |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx_dec, iv, 16 ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_set_iv( &ctx_enc, iv, 16 ) ); |
| |
| TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx_dec ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_reset( &ctx_enc ) ); |
| |
| #if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) |
| TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx_dec, NULL, 0 ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_update_ad( &ctx_enc, NULL, 0 ) ); |
| #endif |
| |
| block_size = mbedtls_cipher_get_block_size( &ctx_enc ); |
| TEST_ASSERT( block_size != 0 ); |
| |
| /* encode length number of bytes from inbuf */ |
| TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx_enc, inbuf, first_length, encbuf, &outlen ) ); |
| TEST_ASSERT( (size_t)first_encrypt_output_len == outlen ); |
| totaloutlen = outlen; |
| TEST_ASSERT( 0 == mbedtls_cipher_update( &ctx_enc, inbuf + first_length, second_length, encbuf + totaloutlen, &outlen ) ); |
| TEST_ASSERT( (size_t)second_encrypt_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_enc, encbuf + totaloutlen, &outlen ) ); |
| totaloutlen += outlen; |
| TEST_ASSERT( totaloutlen == length || |
| ( totaloutlen % block_size == 0 && |
| totaloutlen > length && |
| 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, data_t * key, |
| data_t * iv, data_t * cipher, |
| data_t * clear, data_t * ad, data_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_AUTH_CRYPT */ |
| void auth_crypt_tv( int cipher_id, data_t * key, data_t * iv, |
| data_t * ad, data_t * cipher, data_t * tag, |
| char * result, data_t * clear, int use_psa ) |
| { |
| /* |
| * Take an AEAD ciphertext + tag and perform a pair |
| * of AEAD decryption and AEAD encryption. Check that |
| * this results in the expected plaintext, and that |
| * decryption and encryption are inverse to one another. |
| */ |
| |
| int ret; |
| int using_nist_kw, using_nist_kw_padding; |
| |
| mbedtls_cipher_context_t ctx; |
| size_t outlen; |
| |
| unsigned char *cipher_plus_tag = NULL; |
| size_t cipher_plus_tag_len; |
| unsigned char *decrypt_buf = NULL; |
| size_t decrypt_buf_len = 0; |
| unsigned char *encrypt_buf = NULL; |
| size_t encrypt_buf_len = 0; |
| |
| /* Null pointers are documented as valid for inputs of length 0. |
| * The test framework passes non-null pointers, so set them to NULL. |
| * key, cipher and tag can't be empty. */ |
| if( iv->len == 0 ) |
| iv->x = NULL; |
| if( ad->len == 0 ) |
| ad->x = NULL; |
| if( clear->len == 0 ) |
| clear->x = NULL; |
| |
| mbedtls_cipher_init( &ctx ); |
| |
| /* Initialize PSA Crypto */ |
| #if defined(MBEDTLS_USE_PSA_CRYPTO) |
| if( use_psa == 1 ) |
| PSA_ASSERT( psa_crypto_init( ) ); |
| #else |
| (void) use_psa; |
| #endif |
| |
| /* |
| * Are we using NIST_KW? with padding? |
| */ |
| using_nist_kw_padding = cipher_id == MBEDTLS_CIPHER_AES_128_KWP || |
| cipher_id == MBEDTLS_CIPHER_AES_192_KWP || |
| cipher_id == MBEDTLS_CIPHER_AES_256_KWP; |
| using_nist_kw = cipher_id == MBEDTLS_CIPHER_AES_128_KW || |
| cipher_id == MBEDTLS_CIPHER_AES_192_KW || |
| cipher_id == MBEDTLS_CIPHER_AES_256_KW || |
| using_nist_kw_padding; |
| |
| /* |
| * Prepare context for decryption |
| */ |
| if( ! cipher_reset_key( &ctx, cipher_id, use_psa, tag->len, key, |
| MBEDTLS_DECRYPT ) ) |
| goto exit; |
| |
| /* |
| * prepare buffer for decryption |
| * (we need the tag appended to the ciphertext) |
| */ |
| cipher_plus_tag_len = cipher->len + tag->len; |
| ASSERT_ALLOC( cipher_plus_tag, cipher_plus_tag_len ); |
| memcpy( cipher_plus_tag, cipher->x, cipher->len ); |
| memcpy( cipher_plus_tag + cipher->len, tag->x, tag->len ); |
| |
| /* |
| * Compute length of output buffer according to the documentation |
| */ |
| if( using_nist_kw ) |
| decrypt_buf_len = cipher_plus_tag_len - 8; |
| else |
| decrypt_buf_len = cipher_plus_tag_len - tag->len; |
| |
| |
| /* |
| * Try decrypting to a buffer that's 1B too small |
| */ |
| if( decrypt_buf_len != 0 ) |
| { |
| ASSERT_ALLOC( decrypt_buf, decrypt_buf_len - 1 ); |
| |
| outlen = 0; |
| ret = mbedtls_cipher_auth_decrypt_ext( &ctx, iv->x, iv->len, |
| ad->x, ad->len, cipher_plus_tag, cipher_plus_tag_len, |
| decrypt_buf, decrypt_buf_len - 1, &outlen, tag->len ); |
| TEST_ASSERT( ret == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); |
| |
| mbedtls_free( decrypt_buf ); |
| decrypt_buf = NULL; |
| } |
| |
| /* |
| * Authenticate and decrypt, and check result |
| */ |
| ASSERT_ALLOC( decrypt_buf, decrypt_buf_len ); |
| |
| outlen = 0; |
| ret = mbedtls_cipher_auth_decrypt_ext( &ctx, iv->x, iv->len, |
| ad->x, ad->len, cipher_plus_tag, cipher_plus_tag_len, |
| decrypt_buf, decrypt_buf_len, &outlen, tag->len ); |
| |
| if( strcmp( result, "FAIL" ) == 0 ) |
| { |
| TEST_ASSERT( ret == MBEDTLS_ERR_CIPHER_AUTH_FAILED ); |
| TEST_ASSERT( buffer_is_all_zero( decrypt_buf, decrypt_buf_len ) ); |
| } |
| else |
| { |
| TEST_ASSERT( ret == 0 ); |
| ASSERT_COMPARE( decrypt_buf, outlen, clear->x, clear->len ); |
| } |
| |
| mbedtls_free( decrypt_buf ); |
| decrypt_buf = NULL; |
| |
| /* |
| * Encrypt back if test data was authentic |
| */ |
| if( strcmp( result, "FAIL" ) != 0 ) |
| { |
| /* prepare context for encryption */ |
| if( ! cipher_reset_key( &ctx, cipher_id, use_psa, tag->len, key, |
| MBEDTLS_ENCRYPT ) ) |
| goto exit; |
| |
| /* |
| * Compute size of output buffer according to documentation |
| */ |
| if( using_nist_kw ) |
| { |
| encrypt_buf_len = clear->len + 8; |
| if( using_nist_kw_padding && encrypt_buf_len % 8 != 0 ) |
| encrypt_buf_len += 8 - encrypt_buf_len % 8; |
| } |
| else |
| { |
| encrypt_buf_len = clear->len + tag->len; |
| } |
| |
| /* |
| * Try encrypting with an output buffer that's 1B too small |
| */ |
| ASSERT_ALLOC( encrypt_buf, encrypt_buf_len - 1 ); |
| |
| outlen = 0; |
| ret = mbedtls_cipher_auth_encrypt_ext( &ctx, iv->x, iv->len, |
| ad->x, ad->len, clear->x, clear->len, |
| encrypt_buf, encrypt_buf_len - 1, &outlen, tag->len ); |
| TEST_ASSERT( ret != 0 ); |
| |
| mbedtls_free( encrypt_buf ); |
| encrypt_buf = NULL; |
| |
| /* |
| * Encrypt and check the result |
| */ |
| ASSERT_ALLOC( encrypt_buf, encrypt_buf_len ); |
| |
| outlen = 0; |
| ret = mbedtls_cipher_auth_encrypt_ext( &ctx, iv->x, iv->len, |
| ad->x, ad->len, clear->x, clear->len, |
| encrypt_buf, encrypt_buf_len, &outlen, tag->len ); |
| TEST_ASSERT( ret == 0 ); |
| |
| TEST_ASSERT( outlen == cipher->len + tag->len ); |
| TEST_ASSERT( memcmp( encrypt_buf, cipher->x, cipher->len ) == 0 ); |
| TEST_ASSERT( memcmp( encrypt_buf + cipher->len, |
| tag->x, tag->len ) == 0 ); |
| |
| mbedtls_free( encrypt_buf ); |
| encrypt_buf = NULL; |
| } |
| |
| exit: |
| |
| mbedtls_cipher_free( &ctx ); |
| mbedtls_free( decrypt_buf ); |
| mbedtls_free( encrypt_buf ); |
| mbedtls_free( cipher_plus_tag ); |
| |
| #if defined(MBEDTLS_USE_PSA_CRYPTO) |
| if( use_psa == 1 ) |
| PSA_DONE( ); |
| #endif /* MBEDTLS_USE_PSA_CRYPTO */ |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE */ |
| void test_vec_ecb( int cipher_id, int operation, data_t * key, |
| data_t * input, data_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 test_vec_crypt( int cipher_id, int operation, data_t *key, |
| data_t *iv, data_t *input, data_t *result, |
| int finish_result, int use_psa ) |
| { |
| mbedtls_cipher_context_t ctx; |
| unsigned char output[32]; |
| size_t outlen; |
| |
| mbedtls_cipher_init( &ctx ); |
| |
| memset( output, 0x00, sizeof( output ) ); |
| |
| /* Prepare context */ |
| #if !defined(MBEDTLS_USE_PSA_CRYPTO) |
| (void) use_psa; |
| #else |
| if( use_psa == 1 ) |
| { |
| PSA_ASSERT( psa_crypto_init( ) ); |
| TEST_ASSERT( 0 == mbedtls_cipher_setup_psa( &ctx, |
| mbedtls_cipher_info_from_type( cipher_id ), 0 ) ); |
| } |
| else |
| #endif /* MBEDTLS_USE_PSA_CRYPTO */ |
| 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 ) ); |
| if( MBEDTLS_MODE_CBC == ctx.cipher_info->mode ) |
| TEST_ASSERT( 0 == mbedtls_cipher_set_padding_mode( &ctx, MBEDTLS_PADDING_NONE ) ); |
| |
| TEST_ASSERT( finish_result == mbedtls_cipher_crypt( &ctx, iv->len ? iv->x : NULL, |
| iv->len, input->x, input->len, |
| output, &outlen ) ); |
| TEST_ASSERT( result->len == outlen ); |
| /* check plaintext only if everything went fine */ |
| if( 0 == finish_result ) |
| TEST_ASSERT( 0 == memcmp( output, result->x, outlen ) ); |
| |
| exit: |
| mbedtls_cipher_free( &ctx ); |
| #if defined(MBEDTLS_USE_PSA_CRYPTO) |
| PSA_DONE( ); |
| #endif /* MBEDTLS_USE_PSA_CRYPTO */ |
| } |
| /* 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, data_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 */ |
