diff options
Diffstat (limited to 'app/openssl/crypto/des/qud_cksm.c')
| -rw-r--r-- | app/openssl/crypto/des/qud_cksm.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/app/openssl/crypto/des/qud_cksm.c b/app/openssl/crypto/des/qud_cksm.c new file mode 100644 index 00000000..dac20122 --- /dev/null +++ b/app/openssl/crypto/des/qud_cksm.c @@ -0,0 +1,139 @@ +/* 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); + } + |