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| 1 /* crypto/rc4/rc4_skey.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 #include <openssl/rc4.h> | |
| 60 #include "rc4_locl.h" | |
| 61 #include <openssl/opensslv.h> | |
| 62 | |
| 63 const char RC4_version[]="RC4" OPENSSL_VERSION_PTEXT; | |
| 64 | |
| 65 const char *RC4_options(void) | |
| 66 { | |
| 67 #ifdef RC4_INDEX | |
| 68 if (sizeof(RC4_INT) == 1) | |
| 69 return("rc4(idx,char)"); | |
| 70 else | |
| 71 return("rc4(idx,int)"); | |
| 72 #else | |
| 73 if (sizeof(RC4_INT) == 1) | |
| 74 return("rc4(ptr,char)"); | |
| 75 else | |
| 76 return("rc4(ptr,int)"); | |
| 77 #endif | |
| 78 } | |
| 79 | |
| 80 /* RC4 as implemented from a posting from | |
| 81 * Newsgroups: sci.crypt | |
| 82 * From: sterndark@netcom.com (David Sterndark) | |
| 83 * Subject: RC4 Algorithm revealed. | |
| 84 * Message-ID: <sternCvKL4B.Hyy@netcom.com> | |
| 85 * Date: Wed, 14 Sep 1994 06:35:31 GMT | |
| 86 */ | |
| 87 | |
| 88 void private_RC4_set_key(RC4_KEY *key, int len, const unsigned char *data) | |
| 89 { | |
| 90 register RC4_INT tmp; | |
| 91 register int id1,id2; | |
| 92 register RC4_INT *d; | |
| 93 unsigned int i; | |
| 94 | |
| 95 d= &(key->data[0]); | |
| 96 key->x = 0; | |
| 97 key->y = 0; | |
| 98 id1=id2=0; | |
| 99 | |
| 100 #define SK_LOOP(d,n) { \ | |
| 101 tmp=d[(n)]; \ | |
| 102 id2 = (data[id1] + tmp + id2) & 0xff; \ | |
| 103 if (++id1 == len) id1=0; \ | |
| 104 d[(n)]=d[id2]; \ | |
| 105 d[id2]=tmp; } | |
| 106 | |
| 107 for (i=0; i < 256; i++) d[i]=i; | |
| 108 for (i=0; i < 256; i+=4) | |
| 109 { | |
| 110 SK_LOOP(d,i+0); | |
| 111 SK_LOOP(d,i+1); | |
| 112 SK_LOOP(d,i+2); | |
| 113 SK_LOOP(d,i+3); | |
| 114 } | |
| 115 } | |
| 116 | |
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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