From 6f9079fd505c28961049a732e33e662530bdad21 Mon Sep 17 00:00:00 2001 From: Richard Levitte Date: Wed, 2 Jan 2002 16:55:35 +0000 Subject: Because Rijndael is more known as AES, use crypto/aes instead of crypto/rijndael. Additionally, I applied the AES integration patch from Stephen Sprunk and fiddled it to work properly with the normal EVP constructs (and incidently work the same way as all other symmetric cipher implementations). This results in an API that looks a lot like the rest of the OpenSSL cipher suite. --- crypto/aes/aes_cbc.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 crypto/aes/aes_cbc.c (limited to 'crypto/aes/aes_cbc.c') diff --git a/crypto/aes/aes_cbc.c b/crypto/aes/aes_cbc.c new file mode 100644 index 0000000000..964a9780e4 --- /dev/null +++ b/crypto/aes/aes_cbc.c @@ -0,0 +1,89 @@ +/* crypto/aes/aes_cbc.c -*- mode:C; c-file-style: "eay" -*- */ +/* ==================================================================== + * Copyright (c) 1998-2001 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. + * ==================================================================== + * + */ + +#include +#include +#include "aes_locl.h" + +void AES_cbc_encrypt(const unsigned char *in, unsigned char *out, + const unsigned long length, const AES_KEY *key, + unsigned char *ivec, const int enc) { + + int n; + unsigned long len = length; + unsigned char tmp[16]; + + assert(in && out && key && ivec); + assert(length % AES_BLOCK_SIZE == 0); + assert((AES_ENCRYPT == enc)||(AES_DECRYPT == enc)); + + if (AES_ENCRYPT == enc) + while (len > 0) { + for(n=0; n < 16; ++n) + tmp[n] = in[n] ^ ivec[n]; + AES_encrypt(tmp, out, key); + memcpy(ivec, out, 16); + len -= 16; + in += 16; + out += 16; + } + else + while (len > 0) { + memcpy(tmp, in, 16); + AES_decrypt(in, out, key); + for(n=0; n < 16; ++n) + out[n] ^= ivec[n]; + memcpy(ivec, tmp, 16); + len -= 16; + in += 16; + out += 16; + } +} -- cgit v1.2.3