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| 1 /* crypto/des/qud_cksm.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This package is an SSL implementation written | |
| 6 * by Eric Young (eay@cryptsoft.com). | |
| 7 * The implementation was written so as to conform with Netscapes SSL. | |
| 8 * | |
| 9 * This library is free for commercial and non-commercial use as long as | |
| 10 * the following conditions are aheared to. The following conditions | |
| 11 * apply to all code found in this distribution, be it the RC4, RSA, | |
| 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
| 13 * included with this distribution is covered by the same copyright terms | |
| 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
| 15 * | |
| 16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
| 17 * the code are not to be removed. | |
| 18 * If this package is used in a product, Eric Young should be given attribution | |
| 19 * as the author of the parts of the library used. | |
| 20 * This can be in the form of a textual message at program startup or | |
| 21 * in documentation (online or textual) provided with the package. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 26 * 1. Redistributions of source code must retain the copyright | |
| 27 * notice, this list of conditions and the following disclaimer. | |
| 28 * 2. Redistributions in binary form must reproduce the above copyright | |
| 29 * notice, this list of conditions and the following disclaimer in the | |
| 30 * documentation and/or other materials provided with the distribution. | |
| 31 * 3. All advertising materials mentioning features or use of this software | |
| 32 * must display the following acknowledgement: | |
| 33 * "This product includes cryptographic software written by | |
| 34 * Eric Young (eay@cryptsoft.com)" | |
| 35 * The word 'cryptographic' can be left out if the rouines from the library | |
| 36 * being used are not cryptographic related :-). | |
| 37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
| 38 * the apps directory (application code) you must include an acknowledgement: | |
| 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
| 40 * | |
| 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
| 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 53 * The licence and distribution terms for any publically available version or | |
| 54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
| 55 * copied and put under another distribution licence | |
| 56 * [including the GNU Public Licence.] | |
| 57 */ | |
| 58 | |
| 59 /* From "Message Authentication" R.R. Jueneman, S.M. Matyas, C.H. Meyer | |
| 60 * IEEE Communications Magazine Sept 1985 Vol. 23 No. 9 p 29-40 | |
| 61 * This module in only based on the code in this paper and is | |
| 62 * almost definitely not the same as the MIT implementation. | |
| 63 */ | |
| 64 #include "des_locl.h" | |
| 65 | |
| 66 /* bug fix for dos - 7/6/91 - Larry hughes@logos.ucs.indiana.edu */ | |
| 67 #define Q_B0(a) (((DES_LONG)(a))) | |
| 68 #define Q_B1(a) (((DES_LONG)(a))<<8) | |
| 69 #define Q_B2(a) (((DES_LONG)(a))<<16) | |
| 70 #define Q_B3(a) (((DES_LONG)(a))<<24) | |
| 71 | |
| 72 /* used to scramble things a bit */ | |
| 73 /* Got the value MIT uses via brute force :-) 2/10/90 eay */ | |
| 74 #define NOISE ((DES_LONG)83653421L) | |
| 75 | |
| 76 DES_LONG DES_quad_cksum(const unsigned char *input, DES_cblock output[], | |
| 77 long length, int out_count, DES_cblock *seed) | |
| 78 { | |
| 79 DES_LONG z0,z1,t0,t1; | |
| 80 int i; | |
| 81 long l; | |
| 82 const unsigned char *cp; | |
| 83 #ifdef _CRAY | |
| 84 struct lp_st { int a:32; int b:32; } *lp; | |
| 85 #else | |
| 86 DES_LONG *lp; | |
| 87 #endif | |
| 88 | |
| 89 if (out_count < 1) out_count=1; | |
| 90 #ifdef _CRAY | |
| 91 lp = (struct lp_st *) &(output[0])[0]; | |
| 92 #else | |
| 93 lp = (DES_LONG *) &(output[0])[0]; | |
| 94 #endif | |
| 95 | |
| 96 z0=Q_B0((*seed)[0])|Q_B1((*seed)[1])|Q_B2((*seed)[2])|Q_B3((*seed)[3]); | |
| 97 z1=Q_B0((*seed)[4])|Q_B1((*seed)[5])|Q_B2((*seed)[6])|Q_B3((*seed)[7]); | |
| 98 | |
| 99 for (i=0; ((i<4)&&(i<out_count)); i++) | |
| 100 { | |
| 101 cp=input; | |
| 102 l=length; | |
| 103 while (l > 0) | |
| 104 { | |
| 105 if (l > 1) | |
| 106 { | |
| 107 t0= (DES_LONG)(*(cp++)); | |
| 108 t0|=(DES_LONG)Q_B1(*(cp++)); | |
| 109 l--; | |
| 110 } | |
| 111 else | |
| 112 t0= (DES_LONG)(*(cp++)); | |
| 113 l--; | |
| 114 /* add */ | |
| 115 t0+=z0; | |
| 116 t0&=0xffffffffL; | |
| 117 t1=z1; | |
| 118 /* square, well sort of square */ | |
| 119 z0=((((t0*t0)&0xffffffffL)+((t1*t1)&0xffffffffL)) | |
| 120 &0xffffffffL)%0x7fffffffL; | |
| 121 z1=((t0*((t1+NOISE)&0xffffffffL))&0xffffffffL)%0x7ffffff
fL; | |
| 122 } | |
| 123 if (lp != NULL) | |
| 124 { | |
| 125 /* The MIT library assumes that the checksum is | |
| 126 * composed of 2*out_count 32 bit ints */ | |
| 127 #ifdef _CRAY | |
| 128 (*lp).a = z0; | |
| 129 (*lp).b = z1; | |
| 130 lp++; | |
| 131 #else | |
| 132 *lp++ = z0; | |
| 133 *lp++ = z1; | |
| 134 #endif | |
| 135 } | |
| 136 } | |
| 137 return(z0); | |
| 138 } | |
| 139 | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master