1*0Sstevel@tonic-gate /* crypto/des/fcrypt_b.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 <stdio.h>
60*0Sstevel@tonic-gate
61*0Sstevel@tonic-gate /* This version of crypt has been developed from my MIT compatible
62*0Sstevel@tonic-gate * DES library.
63*0Sstevel@tonic-gate * The library is available at pub/Crypto/DES at ftp.psy.uq.oz.au
64*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)
65*0Sstevel@tonic-gate */
66*0Sstevel@tonic-gate
67*0Sstevel@tonic-gate #define DES_FCRYPT
68*0Sstevel@tonic-gate #include "des_locl.h"
69*0Sstevel@tonic-gate #undef DES_FCRYPT
70*0Sstevel@tonic-gate
71*0Sstevel@tonic-gate #undef PERM_OP
72*0Sstevel@tonic-gate #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
73*0Sstevel@tonic-gate (b)^=(t),\
74*0Sstevel@tonic-gate (a)^=((t)<<(n)))
75*0Sstevel@tonic-gate
76*0Sstevel@tonic-gate #undef HPERM_OP
77*0Sstevel@tonic-gate #define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
78*0Sstevel@tonic-gate (a)=(a)^(t)^(t>>(16-(n))))\
79*0Sstevel@tonic-gate
fcrypt_body(DES_LONG * out,DES_key_schedule * ks,DES_LONG Eswap0,DES_LONG Eswap1)80*0Sstevel@tonic-gate void fcrypt_body(DES_LONG *out, DES_key_schedule *ks, DES_LONG Eswap0,
81*0Sstevel@tonic-gate DES_LONG Eswap1)
82*0Sstevel@tonic-gate {
83*0Sstevel@tonic-gate register DES_LONG l,r,t,u;
84*0Sstevel@tonic-gate #ifdef DES_PTR
85*0Sstevel@tonic-gate register const unsigned char *des_SP=(const unsigned char *)DES_SPtrans;
86*0Sstevel@tonic-gate #endif
87*0Sstevel@tonic-gate register DES_LONG *s;
88*0Sstevel@tonic-gate register int j;
89*0Sstevel@tonic-gate register DES_LONG E0,E1;
90*0Sstevel@tonic-gate
91*0Sstevel@tonic-gate l=0;
92*0Sstevel@tonic-gate r=0;
93*0Sstevel@tonic-gate
94*0Sstevel@tonic-gate s=(DES_LONG *)ks;
95*0Sstevel@tonic-gate E0=Eswap0;
96*0Sstevel@tonic-gate E1=Eswap1;
97*0Sstevel@tonic-gate
98*0Sstevel@tonic-gate for (j=0; j<25; j++)
99*0Sstevel@tonic-gate {
100*0Sstevel@tonic-gate #ifndef DES_UNROLL
101*0Sstevel@tonic-gate register int i;
102*0Sstevel@tonic-gate
103*0Sstevel@tonic-gate for (i=0; i<32; i+=8)
104*0Sstevel@tonic-gate {
105*0Sstevel@tonic-gate D_ENCRYPT(l,r,i+0); /* 1 */
106*0Sstevel@tonic-gate D_ENCRYPT(r,l,i+2); /* 2 */
107*0Sstevel@tonic-gate D_ENCRYPT(l,r,i+4); /* 1 */
108*0Sstevel@tonic-gate D_ENCRYPT(r,l,i+6); /* 2 */
109*0Sstevel@tonic-gate }
110*0Sstevel@tonic-gate #else
111*0Sstevel@tonic-gate D_ENCRYPT(l,r, 0); /* 1 */
112*0Sstevel@tonic-gate D_ENCRYPT(r,l, 2); /* 2 */
113*0Sstevel@tonic-gate D_ENCRYPT(l,r, 4); /* 3 */
114*0Sstevel@tonic-gate D_ENCRYPT(r,l, 6); /* 4 */
115*0Sstevel@tonic-gate D_ENCRYPT(l,r, 8); /* 5 */
116*0Sstevel@tonic-gate D_ENCRYPT(r,l,10); /* 6 */
117*0Sstevel@tonic-gate D_ENCRYPT(l,r,12); /* 7 */
118*0Sstevel@tonic-gate D_ENCRYPT(r,l,14); /* 8 */
119*0Sstevel@tonic-gate D_ENCRYPT(l,r,16); /* 9 */
120*0Sstevel@tonic-gate D_ENCRYPT(r,l,18); /* 10 */
121*0Sstevel@tonic-gate D_ENCRYPT(l,r,20); /* 11 */
122*0Sstevel@tonic-gate D_ENCRYPT(r,l,22); /* 12 */
123*0Sstevel@tonic-gate D_ENCRYPT(l,r,24); /* 13 */
124*0Sstevel@tonic-gate D_ENCRYPT(r,l,26); /* 14 */
125*0Sstevel@tonic-gate D_ENCRYPT(l,r,28); /* 15 */
126*0Sstevel@tonic-gate D_ENCRYPT(r,l,30); /* 16 */
127*0Sstevel@tonic-gate #endif
128*0Sstevel@tonic-gate
129*0Sstevel@tonic-gate t=l;
130*0Sstevel@tonic-gate l=r;
131*0Sstevel@tonic-gate r=t;
132*0Sstevel@tonic-gate }
133*0Sstevel@tonic-gate l=ROTATE(l,3)&0xffffffffL;
134*0Sstevel@tonic-gate r=ROTATE(r,3)&0xffffffffL;
135*0Sstevel@tonic-gate
136*0Sstevel@tonic-gate PERM_OP(l,r,t, 1,0x55555555L);
137*0Sstevel@tonic-gate PERM_OP(r,l,t, 8,0x00ff00ffL);
138*0Sstevel@tonic-gate PERM_OP(l,r,t, 2,0x33333333L);
139*0Sstevel@tonic-gate PERM_OP(r,l,t,16,0x0000ffffL);
140*0Sstevel@tonic-gate PERM_OP(l,r,t, 4,0x0f0f0f0fL);
141*0Sstevel@tonic-gate
142*0Sstevel@tonic-gate out[0]=r;
143*0Sstevel@tonic-gate out[1]=l;
144*0Sstevel@tonic-gate }
145*0Sstevel@tonic-gate
146