--- /dev/null
+/* 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+=8)
+ {
+ D_ENCRYPT(l,r,i+0); /* 1 */
+ D_ENCRYPT(r,l,i+2); /* 2 */
+ D_ENCRYPT(l,r,i+4); /* 1 */
+ D_ENCRYPT(r,l,i+6); /* 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;
+ }
+
projects / bcm963xx.git / blobdiff