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Diffstat (limited to 'thirdparty/openssl/crypto/des/qud_cksm.c')
| -rw-r--r-- | thirdparty/openssl/crypto/des/qud_cksm.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/des/qud_cksm.c b/thirdparty/openssl/crypto/des/qud_cksm.c new file mode 100644 index 0000000000..2a168a5769 --- /dev/null +++ b/thirdparty/openssl/crypto/des/qud_cksm.c @@ -0,0 +1,143 @@ +/* crypto/des/qud_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.] + */ + +/* + * From "Message Authentication" R.R. Jueneman, S.M. Matyas, C.H. Meyer IEEE + * Communications Magazine Sept 1985 Vol. 23 No. 9 p 29-40 This module in + * only based on the code in this paper and is almost definitely not the same + * as the MIT implementation. + */ +#include "des_locl.h" + +/* bug fix for dos - 7/6/91 - Larry hughes@logos.ucs.indiana.edu */ +#define Q_B0(a) (((DES_LONG)(a))) +#define Q_B1(a) (((DES_LONG)(a))<<8) +#define Q_B2(a) (((DES_LONG)(a))<<16) +#define Q_B3(a) (((DES_LONG)(a))<<24) + +/* used to scramble things a bit */ +/* Got the value MIT uses via brute force :-) 2/10/90 eay */ +#define NOISE ((DES_LONG)83653421L) + +DES_LONG DES_quad_cksum(const unsigned char *input, DES_cblock output[], + long length, int out_count, DES_cblock *seed) +{ + DES_LONG z0, z1, t0, t1; + int i; + long l; + const unsigned char *cp; +#ifdef _CRAY + struct lp_st { + int a:32; + int b:32; + } *lp; +#else + DES_LONG *lp; +#endif + + if (out_count < 1) + out_count = 1; +#ifdef _CRAY + lp = (struct lp_st *)&(output[0])[0]; +#else + lp = (DES_LONG *)&(output[0])[0]; +#endif + + z0 = Q_B0((*seed)[0]) | Q_B1((*seed)[1]) | Q_B2((*seed)[2]) | + Q_B3((*seed)[3]); + z1 = Q_B0((*seed)[4]) | Q_B1((*seed)[5]) | Q_B2((*seed)[6]) | + Q_B3((*seed)[7]); + + for (i = 0; ((i < 4) && (i < out_count)); i++) { + cp = input; + l = length; + while (l > 0) { + if (l > 1) { + t0 = (DES_LONG)(*(cp++)); + t0 |= (DES_LONG)Q_B1(*(cp++)); + l--; + } else + t0 = (DES_LONG)(*(cp++)); + l--; + /* add */ + t0 += z0; + t0 &= 0xffffffffL; + t1 = z1; + /* square, well sort of square */ + z0 = ((((t0 * t0) & 0xffffffffL) + ((t1 * t1) & 0xffffffffL)) + & 0xffffffffL) % 0x7fffffffL; + z1 = ((t0 * ((t1 + NOISE) & 0xffffffffL)) & 0xffffffffL) % + 0x7fffffffL; + } + if (lp != NULL) { + /* + * The MIT library assumes that the checksum is composed of + * 2*out_count 32 bit ints + */ +#ifdef _CRAY + (*lp).a = z0; + (*lp).b = z1; + lp++; +#else + *lp++ = z0; + *lp++ = z1; +#endif + } + } + return (z0); +} |