1*0Sstevel@tonic-gate /* crypto/rc2/rc2_skey.c */ 2*0Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate * 5*0Sstevel@tonic-gate * This package is an SSL implementation written 6*0Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com). 7*0Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as 10*0Sstevel@tonic-gate * the following conditions are aheared to. The following conditions 11*0Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA, 12*0Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13*0Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms 14*0Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15*0Sstevel@tonic-gate * 16*0Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in 17*0Sstevel@tonic-gate * the code are not to be removed. 18*0Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution 19*0Sstevel@tonic-gate * as the author of the parts of the library used. 20*0Sstevel@tonic-gate * This can be in the form of a textual message at program startup or 21*0Sstevel@tonic-gate * in documentation (online or textual) provided with the package. 22*0Sstevel@tonic-gate * 23*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 24*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 25*0Sstevel@tonic-gate * are met: 26*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright 27*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 28*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 29*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 30*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 31*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software 32*0Sstevel@tonic-gate * must display the following acknowledgement: 33*0Sstevel@tonic-gate * "This product includes cryptographic software written by 34*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)" 35*0Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library 36*0Sstevel@tonic-gate * being used are not cryptographic related :-). 37*0Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from 38*0Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement: 39*0Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40*0Sstevel@tonic-gate * 41*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51*0Sstevel@tonic-gate * SUCH DAMAGE. 52*0Sstevel@tonic-gate * 53*0Sstevel@tonic-gate * The licence and distribution terms for any publically available version or 54*0Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be 55*0Sstevel@tonic-gate * copied and put under another distribution licence 56*0Sstevel@tonic-gate * [including the GNU Public Licence.] 57*0Sstevel@tonic-gate */ 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #include <openssl/rc2.h> 60*0Sstevel@tonic-gate #include "rc2_locl.h" 61*0Sstevel@tonic-gate 62*0Sstevel@tonic-gate static unsigned char key_table[256]={ 63*0Sstevel@tonic-gate 0xd9,0x78,0xf9,0xc4,0x19,0xdd,0xb5,0xed,0x28,0xe9,0xfd,0x79, 64*0Sstevel@tonic-gate 0x4a,0xa0,0xd8,0x9d,0xc6,0x7e,0x37,0x83,0x2b,0x76,0x53,0x8e, 65*0Sstevel@tonic-gate 0x62,0x4c,0x64,0x88,0x44,0x8b,0xfb,0xa2,0x17,0x9a,0x59,0xf5, 66*0Sstevel@tonic-gate 0x87,0xb3,0x4f,0x13,0x61,0x45,0x6d,0x8d,0x09,0x81,0x7d,0x32, 67*0Sstevel@tonic-gate 0xbd,0x8f,0x40,0xeb,0x86,0xb7,0x7b,0x0b,0xf0,0x95,0x21,0x22, 68*0Sstevel@tonic-gate 0x5c,0x6b,0x4e,0x82,0x54,0xd6,0x65,0x93,0xce,0x60,0xb2,0x1c, 69*0Sstevel@tonic-gate 0x73,0x56,0xc0,0x14,0xa7,0x8c,0xf1,0xdc,0x12,0x75,0xca,0x1f, 70*0Sstevel@tonic-gate 0x3b,0xbe,0xe4,0xd1,0x42,0x3d,0xd4,0x30,0xa3,0x3c,0xb6,0x26, 71*0Sstevel@tonic-gate 0x6f,0xbf,0x0e,0xda,0x46,0x69,0x07,0x57,0x27,0xf2,0x1d,0x9b, 72*0Sstevel@tonic-gate 0xbc,0x94,0x43,0x03,0xf8,0x11,0xc7,0xf6,0x90,0xef,0x3e,0xe7, 73*0Sstevel@tonic-gate 0x06,0xc3,0xd5,0x2f,0xc8,0x66,0x1e,0xd7,0x08,0xe8,0xea,0xde, 74*0Sstevel@tonic-gate 0x80,0x52,0xee,0xf7,0x84,0xaa,0x72,0xac,0x35,0x4d,0x6a,0x2a, 75*0Sstevel@tonic-gate 0x96,0x1a,0xd2,0x71,0x5a,0x15,0x49,0x74,0x4b,0x9f,0xd0,0x5e, 76*0Sstevel@tonic-gate 0x04,0x18,0xa4,0xec,0xc2,0xe0,0x41,0x6e,0x0f,0x51,0xcb,0xcc, 77*0Sstevel@tonic-gate 0x24,0x91,0xaf,0x50,0xa1,0xf4,0x70,0x39,0x99,0x7c,0x3a,0x85, 78*0Sstevel@tonic-gate 0x23,0xb8,0xb4,0x7a,0xfc,0x02,0x36,0x5b,0x25,0x55,0x97,0x31, 79*0Sstevel@tonic-gate 0x2d,0x5d,0xfa,0x98,0xe3,0x8a,0x92,0xae,0x05,0xdf,0x29,0x10, 80*0Sstevel@tonic-gate 0x67,0x6c,0xba,0xc9,0xd3,0x00,0xe6,0xcf,0xe1,0x9e,0xa8,0x2c, 81*0Sstevel@tonic-gate 0x63,0x16,0x01,0x3f,0x58,0xe2,0x89,0xa9,0x0d,0x38,0x34,0x1b, 82*0Sstevel@tonic-gate 0xab,0x33,0xff,0xb0,0xbb,0x48,0x0c,0x5f,0xb9,0xb1,0xcd,0x2e, 83*0Sstevel@tonic-gate 0xc5,0xf3,0xdb,0x47,0xe5,0xa5,0x9c,0x77,0x0a,0xa6,0x20,0x68, 84*0Sstevel@tonic-gate 0xfe,0x7f,0xc1,0xad, 85*0Sstevel@tonic-gate }; 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate /* It has come to my attention that there are 2 versions of the RC2 88*0Sstevel@tonic-gate * key schedule. One which is normal, and anther which has a hook to 89*0Sstevel@tonic-gate * use a reduced key length. 90*0Sstevel@tonic-gate * BSAFE uses the 'retarded' version. What I previously shipped is 91*0Sstevel@tonic-gate * the same as specifying 1024 for the 'bits' parameter. Bsafe uses 92*0Sstevel@tonic-gate * a version where the bits parameter is the same as len*8 */ 93*0Sstevel@tonic-gate void RC2_set_key(RC2_KEY *key, int len, const unsigned char *data, int bits) 94*0Sstevel@tonic-gate { 95*0Sstevel@tonic-gate int i,j; 96*0Sstevel@tonic-gate unsigned char *k; 97*0Sstevel@tonic-gate RC2_INT *ki; 98*0Sstevel@tonic-gate unsigned int c,d; 99*0Sstevel@tonic-gate 100*0Sstevel@tonic-gate k= (unsigned char *)&(key->data[0]); 101*0Sstevel@tonic-gate *k=0; /* for if there is a zero length key */ 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate if (len > 128) len=128; 104*0Sstevel@tonic-gate if (bits <= 0) bits=1024; 105*0Sstevel@tonic-gate if (bits > 1024) bits=1024; 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate for (i=0; i<len; i++) 108*0Sstevel@tonic-gate k[i]=data[i]; 109*0Sstevel@tonic-gate 110*0Sstevel@tonic-gate /* expand table */ 111*0Sstevel@tonic-gate d=k[len-1]; 112*0Sstevel@tonic-gate j=0; 113*0Sstevel@tonic-gate for (i=len; i < 128; i++,j++) 114*0Sstevel@tonic-gate { 115*0Sstevel@tonic-gate d=key_table[(k[j]+d)&0xff]; 116*0Sstevel@tonic-gate k[i]=d; 117*0Sstevel@tonic-gate } 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate /* hmm.... key reduction to 'bits' bits */ 120*0Sstevel@tonic-gate 121*0Sstevel@tonic-gate j=(bits+7)>>3; 122*0Sstevel@tonic-gate i=128-j; 123*0Sstevel@tonic-gate c= (0xff>>(-bits & 0x07)); 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate d=key_table[k[i]&c]; 126*0Sstevel@tonic-gate k[i]=d; 127*0Sstevel@tonic-gate while (i--) 128*0Sstevel@tonic-gate { 129*0Sstevel@tonic-gate d=key_table[k[i+j]^d]; 130*0Sstevel@tonic-gate k[i]=d; 131*0Sstevel@tonic-gate } 132*0Sstevel@tonic-gate 133*0Sstevel@tonic-gate /* copy from bytes into RC2_INT's */ 134*0Sstevel@tonic-gate ki= &(key->data[63]); 135*0Sstevel@tonic-gate for (i=127; i>=0; i-=2) 136*0Sstevel@tonic-gate *(ki--)=((k[i]<<8)|k[i-1])&0xffff; 137*0Sstevel@tonic-gate } 138*0Sstevel@tonic-gate 139