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- /*
- * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- FILE_LICENCE ( GPL2_OR_LATER );
-
- /** @file
- *
- * CBC self-tests
- *
- */
-
- /* Forcibly enable assertions */
- #undef NDEBUG
-
- #include <stdint.h>
- #include <string.h>
- #include <assert.h>
- #include <ipxe/crypto.h>
- #include "cbc_test.h"
-
- /**
- * Test CBC encryption
- *
- * @v cipher Cipher algorithm
- * @v key Key
- * @v key_len Length of key
- * @v iv Initialisation vector
- * @v plaintext Plaintext data
- * @v expected_ciphertext Expected ciphertext data
- * @v len Length of data
- * @ret ok Ciphertext is as expected
- */
- int cbc_test_encrypt ( struct cipher_algorithm *cipher, const void *key,
- size_t key_len, const void *iv, const void *plaintext,
- const void *expected_ciphertext, size_t len ) {
- uint8_t ctx[ cipher->ctxsize ];
- uint8_t ciphertext[ len ];
- int rc;
-
- /* Initialise cipher */
- rc = cipher_setkey ( cipher, ctx, key, key_len );
- assert ( rc == 0 );
- cipher_setiv ( cipher, ctx, iv );
-
- /* Perform encryption */
- cipher_encrypt ( cipher, ctx, plaintext, ciphertext, len );
-
- /* Verify result */
- return ( memcmp ( ciphertext, expected_ciphertext, len ) == 0 );
- }
-
- /**
- * Test CBC decryption
- *
- * @v cipher Cipher algorithm
- * @v key Key
- * @v key_len Length of key
- * @v iv Initialisation vector
- * @v ciphertext Ciphertext data
- * @v expected_plaintext Expected plaintext data
- * @v len Length of data
- * @ret ok Plaintext is as expected
- */
- int cbc_test_decrypt ( struct cipher_algorithm *cipher, const void *key,
- size_t key_len, const void *iv, const void *ciphertext,
- const void *expected_plaintext, size_t len ) {
- uint8_t ctx[ cipher->ctxsize ];
- uint8_t plaintext[ len ];
- int rc;
-
- /* Initialise cipher */
- rc = cipher_setkey ( cipher, ctx, key, key_len );
- assert ( rc == 0 );
- cipher_setiv ( cipher, ctx, iv );
-
- /* Perform encryption */
- cipher_decrypt ( cipher, ctx, ciphertext, plaintext, len );
-
- /* Verify result */
- return ( memcmp ( plaintext, expected_plaintext, len ) == 0 );
- }
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