-/* crypto/seed/seed_cbc.c -*- mode:C; c-file-style: "eay" -*- */
-/* ====================================================================
- * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
+/*
+ * Copyright 2007-2016 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
-#include "seed_locl.h"
-#include <string.h>
+#include <openssl/seed.h>
+#include <openssl/modes.h>
void SEED_cbc_encrypt(const unsigned char *in, unsigned char *out,
size_t len, const SEED_KEY_SCHEDULE *ks,
unsigned char ivec[SEED_BLOCK_SIZE], int enc)
- {
- size_t n;
- unsigned char tmp[SEED_BLOCK_SIZE];
- const unsigned char *iv = ivec;
-
- if (enc)
- {
- while (len >= SEED_BLOCK_SIZE)
- {
- for (n = 0; n < SEED_BLOCK_SIZE; ++n)
- out[n] = in[n] ^ iv[n];
- SEED_encrypt(out, out, ks);
- iv = out;
- len -= SEED_BLOCK_SIZE;
- in += SEED_BLOCK_SIZE;
- out += SEED_BLOCK_SIZE;
- }
- if (len)
- {
- for (n = 0; n < len; ++n)
- out[n] = in[n] ^ iv[n];
- for (n = len; n < SEED_BLOCK_SIZE; ++n)
- out[n] = iv[n];
- SEED_encrypt(out, out, ks);
- iv = out;
- }
- memcpy(ivec, iv, SEED_BLOCK_SIZE);
- }
- else if (in != out) /* decrypt */
- {
- while (len >= SEED_BLOCK_SIZE)
- {
- SEED_decrypt(in, out, ks);
- for (n = 0; n < SEED_BLOCK_SIZE; ++n)
- out[n] ^= iv[n];
- iv = in;
- len -= SEED_BLOCK_SIZE;
- in += SEED_BLOCK_SIZE;
- out += SEED_BLOCK_SIZE;
- }
- if (len)
- {
- SEED_decrypt(in, tmp, ks);
- for (n = 0; n < len; ++n)
- out[n] = tmp[n] ^ iv[n];
- iv = in;
- }
- memcpy(ivec, iv, SEED_BLOCK_SIZE);
- }
- else /* decrypt, overlap */
- {
- while (len >= SEED_BLOCK_SIZE)
- {
- memcpy(tmp, in, SEED_BLOCK_SIZE);
- SEED_decrypt(in, out, ks);
- for (n = 0; n < SEED_BLOCK_SIZE; ++n)
- out[n] ^= ivec[n];
- memcpy(ivec, tmp, SEED_BLOCK_SIZE);
- len -= SEED_BLOCK_SIZE;
- in += SEED_BLOCK_SIZE;
- out += SEED_BLOCK_SIZE;
- }
- if (len)
- {
- memcpy(tmp, in, SEED_BLOCK_SIZE);
- SEED_decrypt(tmp, tmp, ks);
- for (n = 0; n < len; ++n)
- out[n] = tmp[n] ^ ivec[n];
- memcpy(ivec, tmp, SEED_BLOCK_SIZE);
- }
- }
- }
+{
+ if (enc)
+ CRYPTO_cbc128_encrypt(in, out, len, ks, ivec,
+ (block128_f) SEED_encrypt);
+ else
+ CRYPTO_cbc128_decrypt(in, out, len, ks, ivec,
+ (block128_f) SEED_decrypt);
+}
projects / openssl.git / blobdiff