mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-30 00:54:24 +01:00
Add tests for record encryption/decryption
This commit adds tests exercising mutually inverse pairs of record encryption and decryption transformations for the various transformation types allowed in TLS: Stream, CBC, and AEAD.
This commit is contained in:
Hanno Becker
parent
d56ed2491b
commit
a18d1320da
@ -262,4 +262,3 @@ void mbedtls_debug_printf_ecdh( const mbedtls_ssl_context *ssl, int level,
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#endif
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#endif
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#endif /* debug.h */
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#endif /* debug.h */
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@ -950,4 +950,14 @@ int mbedtls_ssl_get_key_exchange_md_tls1_2( mbedtls_ssl_context *ssl,
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}
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}
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#endif
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#endif
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void mbedtls_ssl_transform_init( mbedtls_ssl_transform *transform );
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int mbedtls_ssl_encrypt_buf( mbedtls_ssl_context *ssl,
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mbedtls_ssl_transform *transform,
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mbedtls_record *rec,
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int (*f_rng)(void *, unsigned char *, size_t),
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void *p_rng );
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int mbedtls_ssl_decrypt_buf( mbedtls_ssl_context *ssl,
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mbedtls_ssl_transform *transform,
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mbedtls_record *rec );
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#endif /* ssl_internal.h */
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#endif /* ssl_internal.h */
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@ -1767,7 +1767,7 @@ static void ssl_extract_add_data_from_record( unsigned char* add_data,
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add_data[12] = rec->data_len & 0xFF;
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add_data[12] = rec->data_len & 0xFF;
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}
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}
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static int ssl_encrypt_buf( mbedtls_ssl_context *ssl,
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int mbedtls_ssl_encrypt_buf( mbedtls_ssl_context *ssl,
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mbedtls_ssl_transform *transform,
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mbedtls_ssl_transform *transform,
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mbedtls_record *rec,
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mbedtls_record *rec,
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int (*f_rng)(void *, unsigned char *, size_t),
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int (*f_rng)(void *, unsigned char *, size_t),
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@ -1780,7 +1780,7 @@ static int ssl_encrypt_buf( mbedtls_ssl_context *ssl,
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size_t post_avail;
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size_t post_avail;
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/* The SSL context is only used for debugging purposes! */
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/* The SSL context is only used for debugging purposes! */
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#if !defined(MBEDTLS_SSL_DEBUG_C)
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#if !defined(MBEDTLS_DEBUG_C)
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((void) ssl);
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((void) ssl);
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#endif
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#endif
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@ -2159,7 +2159,7 @@ static int ssl_encrypt_buf( mbedtls_ssl_context *ssl,
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return( 0 );
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return( 0 );
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}
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}
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static int ssl_decrypt_buf( mbedtls_ssl_context *ssl,
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int mbedtls_ssl_decrypt_buf( mbedtls_ssl_context *ssl,
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mbedtls_ssl_transform *transform,
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mbedtls_ssl_transform *transform,
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mbedtls_record *rec )
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mbedtls_record *rec )
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{
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{
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@ -2172,7 +2172,7 @@ static int ssl_decrypt_buf( mbedtls_ssl_context *ssl,
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unsigned char* data;
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unsigned char* data;
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unsigned char add_data[13];
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unsigned char add_data[13];
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#if !defined(MBEDTLS_SSL_DEBUG_C)
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#if !defined(MBEDTLS_DEBUG_C)
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((void) ssl);
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((void) ssl);
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#endif
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#endif
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@ -3752,7 +3752,7 @@ int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl, uint8_t force_flush )
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ssl->conf->transport, rec.ver );
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ssl->conf->transport, rec.ver );
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rec.type = ssl->out_msgtype;
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rec.type = ssl->out_msgtype;
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if( ( ret = ssl_encrypt_buf( ssl, ssl->transform_out, &rec,
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if( ( ret = mbedtls_ssl_encrypt_buf( ssl, ssl->transform_out, &rec,
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ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
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ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
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{
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{
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MBEDTLS_SSL_DEBUG_RET( 1, "ssl_encrypt_buf", ret );
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MBEDTLS_SSL_DEBUG_RET( 1, "ssl_encrypt_buf", ret );
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@ -4634,7 +4634,8 @@ static int ssl_prepare_record_content( mbedtls_ssl_context *ssl )
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mbedtls_ssl_write_version( ssl->major_ver, ssl->minor_ver,
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mbedtls_ssl_write_version( ssl->major_ver, ssl->minor_ver,
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ssl->conf->transport, rec.ver );
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ssl->conf->transport, rec.ver );
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rec.type = ssl->in_msgtype;
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rec.type = ssl->in_msgtype;
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if( ( ret = ssl_decrypt_buf( ssl, ssl->transform_in, &rec ) ) != 0 )
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if( ( ret = mbedtls_ssl_decrypt_buf( ssl, ssl->transform_in,
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&rec ) ) != 0 )
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{
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{
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MBEDTLS_SSL_DEBUG_RET( 1, "ssl_decrypt_buf", ret );
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MBEDTLS_SSL_DEBUG_RET( 1, "ssl_decrypt_buf", ret );
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return( ret );
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return( ret );
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@ -7422,7 +7423,7 @@ static void ssl_handshake_params_init( mbedtls_ssl_handshake_params *handshake )
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#endif
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#endif
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}
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}
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static void ssl_transform_init( mbedtls_ssl_transform *transform )
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void mbedtls_ssl_transform_init( mbedtls_ssl_transform *transform )
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{
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{
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memset( transform, 0, sizeof(mbedtls_ssl_transform) );
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memset( transform, 0, sizeof(mbedtls_ssl_transform) );
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@ -7489,7 +7490,7 @@ static int ssl_handshake_init( mbedtls_ssl_context *ssl )
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/* Initialize structures */
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/* Initialize structures */
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mbedtls_ssl_session_init( ssl->session_negotiate );
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mbedtls_ssl_session_init( ssl->session_negotiate );
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ssl_transform_init( ssl->transform_negotiate );
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mbedtls_ssl_transform_init( ssl->transform_negotiate );
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ssl_handshake_params_init( ssl->handshake );
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ssl_handshake_params_init( ssl->handshake );
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#if defined(MBEDTLS_SSL_PROTO_DTLS)
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#if defined(MBEDTLS_SSL_PROTO_DTLS)
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File diff suppressed because it is too large
Load Diff
@ -1,6 +1,231 @@
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/* BEGIN_HEADER */
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/* BEGIN_HEADER */
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#include <mbedtls/ssl.h>
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#include <mbedtls/ssl.h>
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#include <mbedtls/ssl_internal.h>
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#include <mbedtls/ssl_internal.h>
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/*
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* Helper function setting up inverse record transformations
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* using given cipher, hash, EtM mode, authentication tag length,
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* and version.
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*/
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#define CHK( x ) \
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do \
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{ \
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if( !( x ) ) \
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return( 1 ); \
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} while( 0 )
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static int build_transforms( mbedtls_ssl_transform *t_in,
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mbedtls_ssl_transform *t_out,
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int cipher_type, int hash_id,
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int etm, int tag_mode, int ver )
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{
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mbedtls_cipher_info_t const *cipher_info;
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size_t keylen, maclen, ivlen;
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unsigned char *key0, *key1;
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unsigned char iv_enc[16], iv_dec[16];
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maclen = 0;
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/* Pick cipher */
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cipher_info = mbedtls_cipher_info_from_type( cipher_type );
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CHK( cipher_info != NULL );
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CHK( cipher_info->iv_size <= 16 );
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CHK( cipher_info->key_bitlen % 8 == 0 );
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/* Pick keys */
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keylen = cipher_info->key_bitlen / 8;
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CHK( ( key0 = malloc( keylen ) ) != NULL );
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CHK( ( key1 = malloc( keylen ) ) != NULL );
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memset( key0, 0x1, keylen );
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memset( key1, 0x2, keylen );
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/* Setup cipher contexts */
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CHK( mbedtls_cipher_setup( &t_in->cipher_ctx_enc, cipher_info ) == 0 );
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CHK( mbedtls_cipher_setup( &t_in->cipher_ctx_dec, cipher_info ) == 0 );
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CHK( mbedtls_cipher_setup( &t_out->cipher_ctx_enc, cipher_info ) == 0 );
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CHK( mbedtls_cipher_setup( &t_out->cipher_ctx_dec, cipher_info ) == 0 );
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#if defined(MBEDTLS_CIPHER_MODE_CBC)
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if( cipher_info->mode == MBEDTLS_MODE_CBC )
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{
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CHK( mbedtls_cipher_set_padding_mode( &t_in->cipher_ctx_enc,
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MBEDTLS_PADDING_NONE ) == 0 );
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CHK( mbedtls_cipher_set_padding_mode( &t_in->cipher_ctx_dec,
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MBEDTLS_PADDING_NONE ) == 0 );
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CHK( mbedtls_cipher_set_padding_mode( &t_out->cipher_ctx_enc,
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MBEDTLS_PADDING_NONE ) == 0 );
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CHK( mbedtls_cipher_set_padding_mode( &t_out->cipher_ctx_dec,
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MBEDTLS_PADDING_NONE ) == 0 );
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}
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#endif /* MBEDTLS_CIPHER_MODE_CBC */
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CHK( mbedtls_cipher_setkey( &t_in->cipher_ctx_enc, key0,
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keylen << 3, MBEDTLS_ENCRYPT ) == 0 );
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CHK( mbedtls_cipher_setkey( &t_in->cipher_ctx_dec, key1,
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keylen << 3, MBEDTLS_DECRYPT ) == 0 );
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CHK( mbedtls_cipher_setkey( &t_out->cipher_ctx_enc, key1,
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keylen << 3, MBEDTLS_ENCRYPT ) == 0 );
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CHK( mbedtls_cipher_setkey( &t_out->cipher_ctx_dec, key0,
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keylen << 3, MBEDTLS_DECRYPT ) == 0 );
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free( key0 );
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free( key1 );
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/* Setup MAC contexts */
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#if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC)
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if( cipher_info->mode == MBEDTLS_MODE_CBC ||
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cipher_info->mode == MBEDTLS_MODE_STREAM )
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{
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mbedtls_md_info_t const *md_info;
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unsigned char *md0, *md1;
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/* Pick hash */
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md_info = mbedtls_md_info_from_type( hash_id );
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CHK( md_info != NULL );
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/* Pick hash keys */
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maclen = mbedtls_md_get_size( md_info );
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CHK( ( md0 = malloc( maclen ) ) != NULL );
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CHK( ( md1 = malloc( maclen ) ) != NULL );
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memset( md0, 0x5, maclen );
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memset( md1, 0x6, maclen );
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CHK( mbedtls_md_setup( &t_out->md_ctx_enc, md_info, 1 ) == 0 );
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CHK( mbedtls_md_setup( &t_out->md_ctx_dec, md_info, 1 ) == 0 );
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CHK( mbedtls_md_setup( &t_in->md_ctx_enc, md_info, 1 ) == 0 );
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CHK( mbedtls_md_setup( &t_in->md_ctx_dec, md_info, 1 ) == 0 );
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if( ver > MBEDTLS_SSL_MINOR_VERSION_0 )
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{
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CHK( mbedtls_md_hmac_starts( &t_in->md_ctx_enc,
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md0, maclen ) == 0 );
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CHK( mbedtls_md_hmac_starts( &t_in->md_ctx_dec,
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md1, maclen ) == 0 );
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CHK( mbedtls_md_hmac_starts( &t_out->md_ctx_enc,
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md1, maclen ) == 0 );
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CHK( mbedtls_md_hmac_starts( &t_out->md_ctx_dec,
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md0, maclen ) == 0 );
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}
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#if defined(MBEDTLS_SSL_PROTO_SSL3)
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else
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{
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memcpy( &t_in->mac_enc, md0, maclen );
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memcpy( &t_in->mac_dec, md1, maclen );
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memcpy( &t_out->mac_enc, md1, maclen );
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memcpy( &t_out->mac_dec, md0, maclen );
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}
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#endif
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free( md0 );
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free( md1 );
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}
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#else
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((void) hash_id);
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#endif /* MBEDTLS_SSL_SOME_MODES_USE_MAC */
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/* Pick IV's (regardless of whether they
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* are being used by the transform). */
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ivlen = cipher_info->iv_size;
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memset( iv_enc, 0x3, sizeof( iv_enc ) );
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memset( iv_dec, 0x4, sizeof( iv_dec ) );
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/*
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* Setup transforms
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*/
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#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
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t_out->encrypt_then_mac = etm;
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t_in->encrypt_then_mac = etm;
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#else
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((void) etm);
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#endif
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t_out->minor_ver = ver;
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t_in->minor_ver = ver;
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t_out->ivlen = ivlen;
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t_in->ivlen = ivlen;
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switch( cipher_info->mode )
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{
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case MBEDTLS_MODE_GCM:
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case MBEDTLS_MODE_CCM:
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t_out->fixed_ivlen = 4;
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t_in->fixed_ivlen = 4;
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t_out->maclen = 0;
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t_in->maclen = 0;
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switch( tag_mode )
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{
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case 0: /* Full tag */
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t_out->taglen = 16;
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t_in->taglen = 16;
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break;
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case 1: /* Partial tag */
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t_out->taglen = 8;
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t_in->taglen = 8;
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break;
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default:
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return( 1 );
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}
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break;
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case MBEDTLS_MODE_CHACHAPOLY:
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t_out->fixed_ivlen = 12;
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t_in->fixed_ivlen = 12;
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t_out->maclen = 0;
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t_in->maclen = 0;
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switch( tag_mode )
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{
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case 0: /* Full tag */
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t_out->taglen = 16;
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t_in->taglen = 16;
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break;
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case 1: /* Partial tag */
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t_out->taglen = 8;
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t_in->taglen = 8;
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break;
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default:
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return( 1 );
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}
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break;
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case MBEDTLS_MODE_STREAM:
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case MBEDTLS_MODE_CBC:
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t_out->fixed_ivlen = 0; /* redundant, must be 0 */
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t_in->fixed_ivlen = 0; /* redundant, must be 0 */
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t_out->taglen = 0;
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t_in->taglen = 0;
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switch( tag_mode )
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{
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case 0: /* Full tag */
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t_out->maclen = maclen;
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t_in->maclen = maclen;
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break;
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case 1: /* Partial tag */
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t_out->maclen = 10;
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t_in->maclen = 10;
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break;
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default:
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return( 1 );
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}
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break;
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default:
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return( 1 );
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break;
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}
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/* Setup IV's */
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memcpy( &t_in->iv_dec, iv_dec, sizeof( iv_dec ) );
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memcpy( &t_in->iv_enc, iv_enc, sizeof( iv_enc ) );
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memcpy( &t_out->iv_dec, iv_enc, sizeof( iv_enc ) );
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memcpy( &t_out->iv_enc, iv_dec, sizeof( iv_dec ) );
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return( 0 );
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}
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/* END_HEADER */
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/* END_HEADER */
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/* BEGIN_DEPENDENCIES
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/* BEGIN_DEPENDENCIES
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@ -52,3 +277,107 @@ void ssl_set_hostname_twice( char *hostname0, char *hostname1 )
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mbedtls_ssl_free( &ssl );
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mbedtls_ssl_free( &ssl );
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}
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}
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/* END_CASE */
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/* END_CASE */
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/* BEGIN_CASE */
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void ssl_crypt_record( int cipher_type, int hash_id,
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||||||
|
int etm, int tag_mode, int ver )
|
||||||
|
{
|
||||||
|
/*
|
||||||
|
* Test several record encryptions and decryptions
|
||||||
|
* with plenty of space before and after the data
|
||||||
|
* within the record buffer.
|
||||||
|
*/
|
||||||
|
|
||||||
|
int ret;
|
||||||
|
int num_records = 16;
|
||||||
|
mbedtls_ssl_context ssl; /* ONLY for debugging */
|
||||||
|
|
||||||
|
mbedtls_ssl_transform t0, t1;
|
||||||
|
unsigned char *buf;
|
||||||
|
size_t const buflen = 512;
|
||||||
|
mbedtls_record rec, rec_backup;
|
||||||
|
|
||||||
|
mbedtls_ssl_init( &ssl );
|
||||||
|
mbedtls_ssl_transform_init( &t0 );
|
||||||
|
mbedtls_ssl_transform_init( &t1 );
|
||||||
|
TEST_ASSERT( build_transforms( &t0, &t1, cipher_type, hash_id,
|
||||||
|
etm, tag_mode, ver ) == 0 );
|
||||||
|
|
||||||
|
TEST_ASSERT( ( buf = malloc( buflen ) ) != NULL );
|
||||||
|
|
||||||
|
while( num_records-- > 0 )
|
||||||
|
{
|
||||||
|
mbedtls_ssl_transform *t_dec, *t_enc;
|
||||||
|
/* Take turns in who's sending and who's receiving. */
|
||||||
|
if( num_records % 3 == 0 )
|
||||||
|
{
|
||||||
|
t_dec = &t0;
|
||||||
|
t_enc = &t1;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
t_dec = &t1;
|
||||||
|
t_enc = &t0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The record header affects the transformation in two ways:
|
||||||
|
* 1) It determines the AEAD additional data
|
||||||
|
* 2) The record counter sometimes determines the IV.
|
||||||
|
*
|
||||||
|
* Apart from that, the fields don't have influence.
|
||||||
|
* In particular, it is currently not the responsibility
|
||||||
|
* of ssl_encrypt/decrypt_buf to check if the transform
|
||||||
|
* version matches the record version, or that the
|
||||||
|
* type is sensible.
|
||||||
|
*/
|
||||||
|
|
||||||
|
memset( rec.ctr, num_records, sizeof( rec.ctr ) );
|
||||||
|
rec.type = 42;
|
||||||
|
rec.ver[0] = num_records;
|
||||||
|
rec.ver[1] = num_records;
|
||||||
|
|
||||||
|
rec.buf = buf;
|
||||||
|
rec.buf_len = buflen;
|
||||||
|
rec.data_offset = 16;
|
||||||
|
/* Make sure to vary the length to exercise different
|
||||||
|
* paddings. */
|
||||||
|
rec.data_len = 1 + num_records;
|
||||||
|
|
||||||
|
memset( rec.buf + rec.data_offset, 42, rec.data_len );
|
||||||
|
|
||||||
|
/* Make a copy for later comparison */
|
||||||
|
rec_backup = rec;
|
||||||
|
|
||||||
|
/* Encrypt record */
|
||||||
|
ret = mbedtls_ssl_encrypt_buf( &ssl, t_enc, &rec,
|
||||||
|
rnd_std_rand, NULL );
|
||||||
|
TEST_ASSERT( ret == 0 || ret == MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
|
||||||
|
if( ret != 0 )
|
||||||
|
{
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Decrypt record with t_dec */
|
||||||
|
TEST_ASSERT( mbedtls_ssl_decrypt_buf( &ssl, t_dec, &rec ) == 0 );
|
||||||
|
|
||||||
|
/* Compare results */
|
||||||
|
TEST_ASSERT( rec.type == rec_backup.type );
|
||||||
|
TEST_ASSERT( memcmp( rec.ctr, rec_backup.ctr, 8 ) == 0 );
|
||||||
|
TEST_ASSERT( rec.ver[0] == rec_backup.ver[0] );
|
||||||
|
TEST_ASSERT( rec.ver[1] == rec_backup.ver[1] );
|
||||||
|
TEST_ASSERT( rec.data_len == rec_backup.data_len );
|
||||||
|
TEST_ASSERT( rec.data_offset == rec_backup.data_offset );
|
||||||
|
TEST_ASSERT( memcmp( rec.buf + rec.data_offset,
|
||||||
|
rec_backup.buf + rec_backup.data_offset,
|
||||||
|
rec.data_len ) == 0 );
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Cleanup */
|
||||||
|
mbedtls_ssl_free( &ssl );
|
||||||
|
mbedtls_ssl_transform_free( &t0 );
|
||||||
|
mbedtls_ssl_transform_free( &t1 );
|
||||||
|
|
||||||
|
free( buf );
|
||||||
|
}
|
||||||
|
/* END_CASE */
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user