| /* crypto/des/xcbc_enc.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.] |
| */ |
| |
| #include "des_locl.h" |
| |
| /* RSA's DESX */ |
| |
| #if 0 /* broken code, preserved just in case anyone |
| * specifically looks for this */ |
| static const unsigned char desx_white_in2out[256] = { |
| 0xBD, 0x56, 0xEA, 0xF2, 0xA2, 0xF1, 0xAC, 0x2A, 0xB0, 0x93, 0xD1, 0x9C, |
| 0x1B, 0x33, 0xFD, 0xD0, |
| 0x30, 0x04, 0xB6, 0xDC, 0x7D, 0xDF, 0x32, 0x4B, 0xF7, 0xCB, 0x45, 0x9B, |
| 0x31, 0xBB, 0x21, 0x5A, |
| 0x41, 0x9F, 0xE1, 0xD9, 0x4A, 0x4D, 0x9E, 0xDA, 0xA0, 0x68, 0x2C, 0xC3, |
| 0x27, 0x5F, 0x80, 0x36, |
| 0x3E, 0xEE, 0xFB, 0x95, 0x1A, 0xFE, 0xCE, 0xA8, 0x34, 0xA9, 0x13, 0xF0, |
| 0xA6, 0x3F, 0xD8, 0x0C, |
| 0x78, 0x24, 0xAF, 0x23, 0x52, 0xC1, 0x67, 0x17, 0xF5, 0x66, 0x90, 0xE7, |
| 0xE8, 0x07, 0xB8, 0x60, |
| 0x48, 0xE6, 0x1E, 0x53, 0xF3, 0x92, 0xA4, 0x72, 0x8C, 0x08, 0x15, 0x6E, |
| 0x86, 0x00, 0x84, 0xFA, |
| 0xF4, 0x7F, 0x8A, 0x42, 0x19, 0xF6, 0xDB, 0xCD, 0x14, 0x8D, 0x50, 0x12, |
| 0xBA, 0x3C, 0x06, 0x4E, |
| 0xEC, 0xB3, 0x35, 0x11, 0xA1, 0x88, 0x8E, 0x2B, 0x94, 0x99, 0xB7, 0x71, |
| 0x74, 0xD3, 0xE4, 0xBF, |
| 0x3A, 0xDE, 0x96, 0x0E, 0xBC, 0x0A, 0xED, 0x77, 0xFC, 0x37, 0x6B, 0x03, |
| 0x79, 0x89, 0x62, 0xC6, |
| 0xD7, 0xC0, 0xD2, 0x7C, 0x6A, 0x8B, 0x22, 0xA3, 0x5B, 0x05, 0x5D, 0x02, |
| 0x75, 0xD5, 0x61, 0xE3, |
| 0x18, 0x8F, 0x55, 0x51, 0xAD, 0x1F, 0x0B, 0x5E, 0x85, 0xE5, 0xC2, 0x57, |
| 0x63, 0xCA, 0x3D, 0x6C, |
| 0xB4, 0xC5, 0xCC, 0x70, 0xB2, 0x91, 0x59, 0x0D, 0x47, 0x20, 0xC8, 0x4F, |
| 0x58, 0xE0, 0x01, 0xE2, |
| 0x16, 0x38, 0xC4, 0x6F, 0x3B, 0x0F, 0x65, 0x46, 0xBE, 0x7E, 0x2D, 0x7B, |
| 0x82, 0xF9, 0x40, 0xB5, |
| 0x1D, 0x73, 0xF8, 0xEB, 0x26, 0xC7, 0x87, 0x97, 0x25, 0x54, 0xB1, 0x28, |
| 0xAA, 0x98, 0x9D, 0xA5, |
| 0x64, 0x6D, 0x7A, 0xD4, 0x10, 0x81, 0x44, 0xEF, 0x49, 0xD6, 0xAE, 0x2E, |
| 0xDD, 0x76, 0x5C, 0x2F, |
| 0xA7, 0x1C, 0xC9, 0x09, 0x69, 0x9A, 0x83, 0xCF, 0x29, 0x39, 0xB9, 0xE9, |
| 0x4C, 0xFF, 0x43, 0xAB, |
| }; |
| |
| void DES_xwhite_in2out(const_DES_cblock *des_key, const_DES_cblock *in_white, |
| DES_cblock *out_white) |
| { |
| int out0, out1; |
| int i; |
| const unsigned char *key = &(*des_key)[0]; |
| const unsigned char *in = &(*in_white)[0]; |
| unsigned char *out = &(*out_white)[0]; |
| |
| out[0] = out[1] = out[2] = out[3] = out[4] = out[5] = out[6] = out[7] = 0; |
| out0 = out1 = 0; |
| for (i = 0; i < 8; i++) { |
| out[i] = key[i] ^ desx_white_in2out[out0 ^ out1]; |
| out0 = out1; |
| out1 = (int)out[i & 0x07]; |
| } |
| |
| out0 = out[0]; |
| out1 = out[i]; /* BUG: out-of-bounds read */ |
| for (i = 0; i < 8; i++) { |
| out[i] = in[i] ^ desx_white_in2out[out0 ^ out1]; |
| out0 = out1; |
| out1 = (int)out[i & 0x07]; |
| } |
| } |
| #endif |
| |
| void DES_xcbc_encrypt(const unsigned char *in, unsigned char *out, |
| long length, DES_key_schedule *schedule, |
| DES_cblock *ivec, const_DES_cblock *inw, |
| const_DES_cblock *outw, int enc) |
| { |
| register DES_LONG tin0, tin1; |
| register DES_LONG tout0, tout1, xor0, xor1; |
| register DES_LONG inW0, inW1, outW0, outW1; |
| register const unsigned char *in2; |
| register long l = length; |
| DES_LONG tin[2]; |
| unsigned char *iv; |
| |
| in2 = &(*inw)[0]; |
| c2l(in2, inW0); |
| c2l(in2, inW1); |
| in2 = &(*outw)[0]; |
| c2l(in2, outW0); |
| c2l(in2, outW1); |
| |
| iv = &(*ivec)[0]; |
| |
| if (enc) { |
| c2l(iv, tout0); |
| c2l(iv, tout1); |
| for (l -= 8; l >= 0; l -= 8) { |
| c2l(in, tin0); |
| c2l(in, tin1); |
| tin0 ^= tout0 ^ inW0; |
| tin[0] = tin0; |
| tin1 ^= tout1 ^ inW1; |
| tin[1] = tin1; |
| DES_encrypt1(tin, schedule, DES_ENCRYPT); |
| tout0 = tin[0] ^ outW0; |
| l2c(tout0, out); |
| tout1 = tin[1] ^ outW1; |
| l2c(tout1, out); |
| } |
| if (l != -8) { |
| c2ln(in, tin0, tin1, l + 8); |
| tin0 ^= tout0 ^ inW0; |
| tin[0] = tin0; |
| tin1 ^= tout1 ^ inW1; |
| tin[1] = tin1; |
| DES_encrypt1(tin, schedule, DES_ENCRYPT); |
| tout0 = tin[0] ^ outW0; |
| l2c(tout0, out); |
| tout1 = tin[1] ^ outW1; |
| l2c(tout1, out); |
| } |
| iv = &(*ivec)[0]; |
| l2c(tout0, iv); |
| l2c(tout1, iv); |
| } else { |
| c2l(iv, xor0); |
| c2l(iv, xor1); |
| for (l -= 8; l > 0; l -= 8) { |
| c2l(in, tin0); |
| tin[0] = tin0 ^ outW0; |
| c2l(in, tin1); |
| tin[1] = tin1 ^ outW1; |
| DES_encrypt1(tin, schedule, DES_DECRYPT); |
| tout0 = tin[0] ^ xor0 ^ inW0; |
| tout1 = tin[1] ^ xor1 ^ inW1; |
| l2c(tout0, out); |
| l2c(tout1, out); |
| xor0 = tin0; |
| xor1 = tin1; |
| } |
| if (l != -8) { |
| c2l(in, tin0); |
| tin[0] = tin0 ^ outW0; |
| c2l(in, tin1); |
| tin[1] = tin1 ^ outW1; |
| DES_encrypt1(tin, schedule, DES_DECRYPT); |
| tout0 = tin[0] ^ xor0 ^ inW0; |
| tout1 = tin[1] ^ xor1 ^ inW1; |
| l2cn(tout0, tout1, out, l + 8); |
| xor0 = tin0; |
| xor1 = tin1; |
| } |
| |
| iv = &(*ivec)[0]; |
| l2c(xor0, iv); |
| l2c(xor1, iv); |
| } |
| tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0; |
| inW0 = inW1 = outW0 = outW1 = 0; |
| tin[0] = tin[1] = 0; |
| } |
