diff options
Diffstat (limited to 'thirdparty/openssl/crypto/des/fcrypt_b.c')
| -rw-r--r-- | thirdparty/openssl/crypto/des/fcrypt_b.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/des/fcrypt_b.c b/thirdparty/openssl/crypto/des/fcrypt_b.c new file mode 100644 index 0000000000..b9e87383d2 --- /dev/null +++ b/thirdparty/openssl/crypto/des/fcrypt_b.c @@ -0,0 +1,140 @@ +/* crypto/des/fcrypt_b.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 <stdio.h> + +/* + * This version of crypt has been developed from my MIT compatible DES + * library. The library is available at pub/Crypto/DES at ftp.psy.uq.oz.au + * Eric Young (eay@cryptsoft.com) + */ + +#define DES_FCRYPT +#include "des_locl.h" +#undef DES_FCRYPT + +#undef PERM_OP +#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ + (b)^=(t),\ + (a)^=((t)<<(n))) + +#undef HPERM_OP +#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ + (a)=(a)^(t)^(t>>(16-(n))))\ + +void fcrypt_body(DES_LONG *out, DES_key_schedule *ks, DES_LONG Eswap0, + DES_LONG Eswap1) +{ + register DES_LONG l, r, t, u; +#ifdef DES_PTR + register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans; +#endif + register DES_LONG *s; + register int j; + register DES_LONG E0, E1; + + l = 0; + r = 0; + + s = (DES_LONG *)ks; + E0 = Eswap0; + E1 = Eswap1; + + for (j = 0; j < 25; j++) { +#ifndef DES_UNROLL + register int i; + + for (i = 0; i < 32; i += 4) { + D_ENCRYPT(l, r, i + 0); /* 1 */ + D_ENCRYPT(r, l, i + 2); /* 2 */ + } +#else + 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 */ +#endif + + t = l; + l = r; + r = t; + } + l = ROTATE(l, 3) & 0xffffffffL; + r = ROTATE(r, 3) & 0xffffffffL; + + PERM_OP(l, r, t, 1, 0x55555555L); + PERM_OP(r, l, t, 8, 0x00ff00ffL); + PERM_OP(l, r, t, 2, 0x33333333L); + PERM_OP(r, l, t, 16, 0x0000ffffL); + PERM_OP(l, r, t, 4, 0x0f0f0f0fL); + + out[0] = r; + out[1] = l; +} |