1023 lines
33 KiB
Text
1023 lines
33 KiB
Text
/* BEGIN_HEADER */
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#include "mbedtls/cipher.h"
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#if defined(MBEDTLS_AES_C)
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#include "mbedtls/aes.h"
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#endif
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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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#if defined(MBEDTLS_CIPHER_MODE_AEAD) || defined(MBEDTLS_NIST_KW_C)
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#define MBEDTLS_CIPHER_AUTH_CRYPT
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#endif
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#if defined(MBEDTLS_CIPHER_AUTH_CRYPT)
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/* Helper for resetting key/direction
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*
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* The documentation doesn't explicitly say whether calling
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* mbedtls_cipher_setkey() twice is allowed or not. This currently works with
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* the default software implementation, but only by accident. It isn't
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* guaranteed to work with new ciphers or with alternative implementations of
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* individual ciphers, and it doesn't work with the PSA wrappers. So don't do
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* it, and instead start with a fresh context.
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*/
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static int cipher_reset_key( mbedtls_cipher_context_t *ctx, int cipher_id,
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int use_psa, size_t tag_len, const data_t *key, int direction )
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{
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mbedtls_cipher_free( ctx );
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mbedtls_cipher_init( ctx );
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#if !defined(MBEDTLS_USE_PSA_CRYPTO)
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(void) use_psa;
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(void) tag_len;
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#else
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if( use_psa == 1 )
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{
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TEST_ASSERT( 0 == mbedtls_cipher_setup_psa( ctx,
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mbedtls_cipher_info_from_type( cipher_id ),
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tag_len ) );
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}
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else
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#endif /* MBEDTLS_USE_PSA_CRYPTO */
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{
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TEST_ASSERT( 0 == mbedtls_cipher_setup( ctx,
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mbedtls_cipher_info_from_type( cipher_id ) ) );
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}
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TEST_ASSERT( 0 == mbedtls_cipher_setkey( ctx, key->x, 8 * key->len,
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direction ) );
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return( 1 );
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exit:
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return( 0 );
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}
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/*
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* Check if a buffer is all-0 bytes:
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* return 1 if it is,
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* 0 if it isn't.
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*/
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int buffer_is_all_zero( const uint8_t *buf, size_t size )
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{
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for( size_t i = 0; i < size; i++ )
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if( buf[i] != 0 )
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return 0;
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return 1;
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}
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#endif /* MBEDTLS_CIPHER_AUTH_CRYPT */
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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_invalid_param_unconditional( )
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{
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mbedtls_cipher_context_t valid_ctx;
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mbedtls_cipher_context_t invalid_ctx;
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mbedtls_operation_t valid_operation = MBEDTLS_ENCRYPT;
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mbedtls_cipher_padding_t valid_mode = MBEDTLS_PADDING_ZEROS;
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unsigned char valid_buffer[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
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int valid_size = sizeof(valid_buffer);
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int valid_bitlen = valid_size * 8;
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const mbedtls_cipher_info_t *valid_info = mbedtls_cipher_info_from_type(
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*( mbedtls_cipher_list() ) );
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size_t size_t_var;
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(void)valid_mode; /* In some configurations this is unused */
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mbedtls_cipher_init( &valid_ctx );
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mbedtls_cipher_setup( &valid_ctx, valid_info );
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mbedtls_cipher_init( &invalid_ctx );
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/* mbedtls_cipher_setup() */
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TEST_ASSERT( mbedtls_cipher_setup( &valid_ctx, NULL ) ==
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MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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/* mbedtls_cipher_get_block_size() */
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TEST_ASSERT( mbedtls_cipher_get_block_size( &invalid_ctx ) == 0 );
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/* mbedtls_cipher_get_cipher_mode() */
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TEST_ASSERT( mbedtls_cipher_get_cipher_mode( &invalid_ctx ) ==
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MBEDTLS_MODE_NONE );
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/* mbedtls_cipher_get_iv_size() */
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TEST_ASSERT( mbedtls_cipher_get_iv_size( &invalid_ctx ) == 0 );
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/* mbedtls_cipher_get_type() */
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TEST_ASSERT(
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mbedtls_cipher_get_type( &invalid_ctx ) ==
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MBEDTLS_CIPHER_NONE);
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/* mbedtls_cipher_get_name() */
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TEST_ASSERT( mbedtls_cipher_get_name( &invalid_ctx ) == 0 );
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/* mbedtls_cipher_get_key_bitlen() */
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TEST_ASSERT( mbedtls_cipher_get_key_bitlen( &invalid_ctx ) ==
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MBEDTLS_KEY_LENGTH_NONE );
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/* mbedtls_cipher_get_operation() */
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TEST_ASSERT( mbedtls_cipher_get_operation( &invalid_ctx ) ==
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MBEDTLS_OPERATION_NONE );
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/* mbedtls_cipher_setkey() */
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TEST_ASSERT(
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mbedtls_cipher_setkey( &invalid_ctx,
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valid_buffer,
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valid_bitlen,
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valid_operation ) ==
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MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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/* mbedtls_cipher_set_iv() */
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TEST_ASSERT(
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mbedtls_cipher_set_iv( &invalid_ctx,
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valid_buffer,
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valid_size ) ==
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MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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/* mbedtls_cipher_reset() */
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TEST_ASSERT( mbedtls_cipher_reset( &invalid_ctx ) ==
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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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/* mbedtls_cipher_update_ad() */
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TEST_ASSERT(
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mbedtls_cipher_update_ad( &invalid_ctx,
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valid_buffer,
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valid_size ) ==
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MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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#endif /* defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) */
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#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
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/* mbedtls_cipher_set_padding_mode() */
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TEST_ASSERT( mbedtls_cipher_set_padding_mode( &invalid_ctx, valid_mode ) ==
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MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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#endif
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/* mbedtls_cipher_update() */
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TEST_ASSERT(
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mbedtls_cipher_update( &invalid_ctx,
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valid_buffer,
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valid_size,
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valid_buffer,
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&size_t_var ) ==
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MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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/* mbedtls_cipher_finish() */
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TEST_ASSERT(
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mbedtls_cipher_finish( &invalid_ctx,
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valid_buffer,
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&size_t_var ) ==
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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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/* mbedtls_cipher_write_tag() */
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TEST_ASSERT(
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mbedtls_cipher_write_tag( &invalid_ctx,
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valid_buffer,
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valid_size ) ==
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MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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/* mbedtls_cipher_check_tag() */
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TEST_ASSERT(
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mbedtls_cipher_check_tag( &invalid_ctx,
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valid_buffer,
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valid_size ) ==
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MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
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#endif /* defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) */
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exit:
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mbedtls_cipher_free( &invalid_ctx );
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mbedtls_cipher_free( &valid_ctx );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:NOT_DEFINED */
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void cipher_invalid_param_conditional( )
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{
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mbedtls_cipher_context_t valid_ctx;
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mbedtls_operation_t invalid_operation = 100;
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mbedtls_cipher_padding_t valid_mode = MBEDTLS_PADDING_ZEROS;
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unsigned char valid_buffer[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
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int valid_size = sizeof(valid_buffer);
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int valid_bitlen = valid_size * 8;
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const mbedtls_cipher_info_t *valid_info = mbedtls_cipher_info_from_type(
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*( mbedtls_cipher_list() ) );
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(void)valid_mode; /* In some configurations this is unused */
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TEST_EQUAL(
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MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
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mbedtls_cipher_setkey( &valid_ctx,
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valid_buffer,
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valid_bitlen,
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invalid_operation ) );
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exit:
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;
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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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#if defined (MBEDTLS_CIPHER_MODE_CBC)
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unsigned char iv[32];
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#endif
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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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#if defined(MBEDTLS_CIPHER_MODE_CBC)
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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_CBC );
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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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mbedtls_cipher_free( &ctx );
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mbedtls_cipher_init( &ctx );
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#endif /* MBEDTLS_CIPHER_MODE_CBC */
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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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/* 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( int cipher,
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int expected_update_ret,
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int expected_finish_ret )
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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;
|
|
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 */
|