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Diffstat (limited to 'openssl/crypto/des/cbc_cksm.c')
| -rw-r--r-- | openssl/crypto/des/cbc_cksm.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/openssl/crypto/des/cbc_cksm.c b/openssl/crypto/des/cbc_cksm.c new file mode 100644 index 0000000..f89b5b9 --- /dev/null +++ b/openssl/crypto/des/cbc_cksm.c @@ -0,0 +1,103 @@ +/* crypto/des/cbc_cksm.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * 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 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 acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS 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 AUTHOR OR 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. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include "des_locl.h" + +DES_LONG DES_cbc_cksum(const unsigned char *in, DES_cblock *output, + long length, DES_key_schedule *schedule, + const_DES_cblock *ivec) +{ + register DES_LONG tout0, tout1, tin0, tin1; + register long l = length; + DES_LONG tin[2]; + unsigned char *out = &(*output)[0]; + const unsigned char *iv = &(*ivec)[0]; + + c2l(iv, tout0); + c2l(iv, tout1); + for (; l > 0; l -= 8) { + if (l >= 8) { + c2l(in, tin0); + c2l(in, tin1); + } else + c2ln(in, tin0, tin1, l); + + tin0 ^= tout0; + tin[0] = tin0; + tin1 ^= tout1; + tin[1] = tin1; + DES_encrypt1((DES_LONG *)tin, schedule, DES_ENCRYPT); + /* fix 15/10/91 eay - thanks to keithr@sco.COM */ + tout0 = tin[0]; + tout1 = tin[1]; + } + if (out != NULL) { + l2c(tout0, out); + l2c(tout1, out); + } + tout0 = tin0 = tin1 = tin[0] = tin[1] = 0; + /* + * Transform the data in tout1 so that it will match the return value + * that the MIT Kerberos mit_des_cbc_cksum API returns. + */ + tout1 = ((tout1 >> 24L) & 0x000000FF) + | ((tout1 >> 8L) & 0x0000FF00) + | ((tout1 << 8L) & 0x00FF0000) + | ((tout1 << 24L) & 0xFF000000); + return (tout1); +} |