/* 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 #include "des_locl.h" #include "spr.h" void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc) { register DES_LONG l, r, t, u; register DES_LONG *s; r = data[0]; l = data[1]; IP(r, l); /* * Things have been modified so that the initial rotate is done outside * the loop. This required the DES_SPtrans values in sp.h to be rotated * 1 bit to the right. One perl script later and things have a 5% speed * up on a sparc2. Thanks to Richard Outerbridge * <71755.204@CompuServe.COM> for pointing this out. */ /* clear the top bits on machines with 8byte longs */ /* shift left by 2 */ r = ROTATE(r, 29) & 0xffffffffL; l = ROTATE(l, 29) & 0xffffffffL; s = ks->ks->deslong; /* * I don't know if it is worth the effort of loop unrolling the inner * loop */ if (enc) { D_ENCRYPT(l, r, 0); /* 1 */ D_ENCRYPT(r, l, 2); /* 2 */ D_ENCRYPT(l, r, 4); /* 3 */ D_ENCRYPT(r, l, 6); /* 4 */ D_ENCRYPT(l, r, 8); /* 5 */ D_ENCRYPT(r, l, 10); /* 6 */ D_ENCRYPT(l, r, 12); /* 7 */ D_ENCRYPT(r, l, 14); /* 8 */ D_ENCRYPT(l, r, 16); /* 9 */ D_ENCRYPT(r, l, 18); /* 10 */ D_ENCRYPT(l, r, 20); /* 11 */ D_ENCRYPT(r, l, 22); /* 12 */ D_ENCRYPT(l, r, 24); /* 13 */ D_ENCRYPT(r, l, 26); /* 14 */ D_ENCRYPT(l, r, 28); /* 15 */ D_ENCRYPT(r, l, 30); /* 16 */ } else { D_ENCRYPT(l, r, 30); /* 16 */ D_ENCRYPT(r, l, 28); /* 15 */ D_ENCRYPT(l, r, 26); /* 14 */ D_ENCRYPT(r, l, 24); /* 13 */ D_ENCRYPT(l, r, 22); /* 12 */ D_ENCRYPT(r, l, 20); /* 11 */ D_ENCRYPT(l, r, 18); /* 10 */ D_ENCRYPT(r, l, 16); /* 9 */ D_ENCRYPT(l, r, 14); /* 8 */ D_ENCRYPT(r, l, 12); /* 7 */ D_ENCRYPT(l, r, 10); /* 6 */ D_ENCRYPT(r, l, 8); /* 5 */ D_ENCRYPT(l, r, 6); /* 4 */ D_ENCRYPT(r, l, 4); /* 3 */ D_ENCRYPT(l, r, 2); /* 2 */ D_ENCRYPT(r, l, 0); /* 1 */ } /* rotate and clear the top bits on machines with 8byte longs */ l = ROTATE(l, 3) & 0xffffffffL; r = ROTATE(r, 3) & 0xffffffffL; FP(r, l); data[0] = l; data[1] = r; l = r = t = u = 0; } void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc) { register DES_LONG l, r, t, u; register DES_LONG *s; r = data[0]; l = data[1]; /* * Things have been modified so that the initial rotate is done outside * the loop. This required the DES_SPtrans values in sp.h to be rotated * 1 bit to the right. One perl script later and things have a 5% speed * up on a sparc2. Thanks to Richard Outerbridge * <71755.204@CompuServe.COM> for pointing this out. */ /* clear the top bits on machines with 8byte longs */ r = ROTATE(r, 29) & 0xffffffffL; l = ROTATE(l, 29) & 0xffffffffL; s = ks->ks->deslong; /* * I don't know if it is worth the effort of loop unrolling the inner * loop */ if (enc) { D_ENCRYPT(l, r, 0); /* 1 */ D_ENCRYPT(r, l, 2); /* 2 */ D_ENCRYPT(l, r, 4); /* 3 */ D_ENCRYPT(r, l, 6); /* 4 */ D_ENCRYPT(l, r, 8); /* 5 */ D_ENCRYPT(r, l, 10); /* 6 */ D_ENCRYPT(l, r, 12); /* 7 */ D_ENCRYPT(r, l, 14); /* 8 */ D_ENCRYPT(l, r, 16); /* 9 */ D_ENCRYPT(r, l, 18); /* 10 */ D_ENCRYPT(l, r, 20); /* 11 */ D_ENCRYPT(r, l, 22); /* 12 */ D_ENCRYPT(l, r, 24); /* 13 */ D_ENCRYPT(r, l, 26); /* 14 */ D_ENCRYPT(l, r, 28); /* 15 */ D_ENCRYPT(r, l, 30); /* 16 */ } else { D_ENCRYPT(l, r, 30); /* 16 */ D_ENCRYPT(r, l, 28); /* 15 */ D_ENCRYPT(l, r, 26); /* 14 */ D_ENCRYPT(r, l, 24); /* 13 */ D_ENCRYPT(l, r, 22); /* 12 */ D_ENCRYPT(r, l, 20); /* 11 */ D_ENCRYPT(l, r, 18); /* 10 */ D_ENCRYPT(r, l, 16); /* 9 */ D_ENCRYPT(l, r, 14); /* 8 */ D_ENCRYPT(r, l, 12); /* 7 */ D_ENCRYPT(l, r, 10); /* 6 */ D_ENCRYPT(r, l, 8); /* 5 */ D_ENCRYPT(l, r, 6); /* 4 */ D_ENCRYPT(r, l, 4); /* 3 */ D_ENCRYPT(l, r, 2); /* 2 */ D_ENCRYPT(r, l, 0); /* 1 */ } /* rotate and clear the top bits on machines with 8byte longs */ data[0] = ROTATE(l, 3) & 0xffffffffL; data[1] = ROTATE(r, 3) & 0xffffffffL; l = r = t = u = 0; } void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1, DES_key_schedule *ks2, DES_key_schedule *ks3) { register DES_LONG l, r; l = data[0]; r = data[1]; IP(l, r); data[0] = l; data[1] = r; DES_encrypt2((DES_LONG *)data, ks1, DES_ENCRYPT); DES_encrypt2((DES_LONG *)data, ks2, DES_DECRYPT); DES_encrypt2((DES_LONG *)data, ks3, DES_ENCRYPT); l = data[0]; r = data[1]; FP(r, l); data[0] = l; data[1] = r; } void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1, DES_key_schedule *ks2, DES_key_schedule *ks3) { register DES_LONG l, r; l = data[0]; r = data[1]; IP(l, r); data[0] = l; data[1] = r; DES_encrypt2((DES_LONG *)data, ks3, DES_DECRYPT); DES_encrypt2((DES_LONG *)data, ks2, DES_ENCRYPT); DES_encrypt2((DES_LONG *)data, ks1, DES_DECRYPT); l = data[0]; r = data[1]; FP(r, l); data[0] = l; data[1] = r; } #ifndef DES_DEFAULT_OPTIONS # undef CBC_ENC_C__DONT_UPDATE_IV # include "ncbc_enc.c" /* DES_ncbc_encrypt */ void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output, long length, DES_key_schedule *ks1, DES_key_schedule *ks2, DES_key_schedule *ks3, DES_cblock *ivec, int enc) { register DES_LONG tin0, tin1; register DES_LONG tout0, tout1, xor0, xor1; register const unsigned char *in; unsigned char *out; register long l = length; DES_LONG tin[2]; unsigned char *iv; in = input; out = output; 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; tin1 ^= tout1; tin[0] = tin0; tin[1] = tin1; DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3); tout0 = tin[0]; tout1 = tin[1]; l2c(tout0, out); l2c(tout1, out); } if (l != -8) { c2ln(in, tin0, tin1, l + 8); tin0 ^= tout0; tin1 ^= tout1; tin[0] = tin0; tin[1] = tin1; DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3); tout0 = tin[0]; tout1 = tin[1]; l2c(tout0, out); l2c(tout1, out); } iv = &(*ivec)[0]; l2c(tout0, iv); l2c(tout1, iv); } else { register DES_LONG t0, t1; c2l(iv, xor0); c2l(iv, xor1); for (l -= 8; l >= 0; l -= 8) { c2l(in, tin0); c2l(in, tin1); t0 = tin0; t1 = tin1; tin[0] = tin0; tin[1] = tin1; DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3); tout0 = tin[0]; tout1 = tin[1]; tout0 ^= xor0; tout1 ^= xor1; l2c(tout0, out); l2c(tout1, out); xor0 = t0; xor1 = t1; } if (l != -8) { c2l(in, tin0); c2l(in, tin1); t0 = tin0; t1 = tin1; tin[0] = tin0; tin[1] = tin1; DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3); tout0 = tin[0]; tout1 = tin[1]; tout0 ^= xor0; tout1 ^= xor1; l2cn(tout0, tout1, out, l + 8); xor0 = t0; xor1 = t1; } iv = &(*ivec)[0]; l2c(xor0, iv); l2c(xor1, iv); } tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0; tin[0] = tin[1] = 0; } #endif /* DES_DEFAULT_OPTIONS */