+/*
+ * Copyright (C) 1996-2015 The Squid Software Foundation and contributors
+ *
+ * Squid software is distributed under GPLv2+ license and includes
+ * contributions from numerous individuals and organizations.
+ * Please see the COPYING and CONTRIBUTORS files for details.
+ */
+
/* encrypt.c - providing 56 bit DES encryption
* Copyright (C) 1991 Jochen Obalek
- *
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+#include "squid.h"
+
#include <time.h>
#include <string.h>
#include <stdlib.h>
static char schluessel[16][KS];
-
-static char PC1[] =
-{
+static char PC1[] = {
56, 48, 40, 32, 24, 16, 8, 0,
57, 49, 41, 33, 25, 17, 9, 1,
58, 50, 42, 34, 26, 18, 10, 2,
27, 19, 11, 3
};
-
-static char PC2[] =
-{
+static char PC2[] = {
13, 16, 10, 23, 0, 4, 2, 27,
14, 5, 20, 9, 22, 18, 11, 3,
25, 7, 15, 6, 26, 19, 12, 1,
33, 52, 45, 41, 49, 35, 28, 31
};
-
-static char IP[] =
-{
+static char IP[] = {
57, 49, 41, 33, 25, 17, 9, 1,
59, 51, 43, 35, 27, 19, 11, 3,
61, 53, 45, 37, 29, 21, 13, 5,
62, 54, 46, 38, 30, 22, 14, 6
};
-
-static char EP[] =
-{
+static char EP[] = {
7, 39, 15, 47, 23, 55, 31, 63,
6, 38, 14, 46, 22, 54, 30, 62,
5, 37, 13, 45, 21, 53, 29, 61,
0, 32, 8, 40, 16, 48, 24, 56
};
-
-static char E0[] =
-{
+static char E0[] = {
31, 0, 1, 2, 3, 4, 3, 4,
5, 6, 7, 8, 7, 8, 9, 10,
11, 12, 11, 12, 13, 14, 15, 16,
27, 28, 27, 28, 29, 30, 31, 0
};
-
static char E[KS];
-
-static char PERM[] =
-{
+static char PERM[] = {
15, 6, 19, 20, 28, 11, 27, 16,
0, 14, 22, 25, 4, 17, 30, 9,
1, 7, 23, 13, 31, 26, 2, 8,
18, 12, 29, 5, 21, 10, 3, 24
};
-
-static char S_BOX[][64] =
-{
+static char S_BOX[][64] = {
{
- 14, 0, 4, 15, 13, 7, 1, 4, 2, 14, 15, 2, 11, 13, 8, 1,
- 3, 10, 10, 6, 6, 12, 12, 11, 5, 9, 9, 5, 0, 3, 7, 8,
- 4, 15, 1, 12, 14, 8, 8, 2, 13, 4, 6, 9, 2, 1, 11, 7,
- 15, 5, 12, 11, 9, 3, 7, 14, 3, 10, 10, 0, 5, 6, 0, 13
+ 14, 0, 4, 15, 13, 7, 1, 4, 2, 14, 15, 2, 11, 13, 8, 1,
+ 3, 10, 10, 6, 6, 12, 12, 11, 5, 9, 9, 5, 0, 3, 7, 8,
+ 4, 15, 1, 12, 14, 8, 8, 2, 13, 4, 6, 9, 2, 1, 11, 7,
+ 15, 5, 12, 11, 9, 3, 7, 14, 3, 10, 10, 0, 5, 6, 0, 13
},
{
- 15, 3, 1, 13, 8, 4, 14, 7, 6, 15, 11, 2, 3, 8, 4, 14,
- 9, 12, 7, 0, 2, 1, 13, 10, 12, 6, 0, 9, 5, 11, 10, 5,
- 0, 13, 14, 8, 7, 10, 11, 1, 10, 3, 4, 15, 13, 4, 1, 2,
- 5, 11, 8, 6, 12, 7, 6, 12, 9, 0, 3, 5, 2, 14, 15, 9
+ 15, 3, 1, 13, 8, 4, 14, 7, 6, 15, 11, 2, 3, 8, 4, 14,
+ 9, 12, 7, 0, 2, 1, 13, 10, 12, 6, 0, 9, 5, 11, 10, 5,
+ 0, 13, 14, 8, 7, 10, 11, 1, 10, 3, 4, 15, 13, 4, 1, 2,
+ 5, 11, 8, 6, 12, 7, 6, 12, 9, 0, 3, 5, 2, 14, 15, 9
},
{
- 10, 13, 0, 7, 9, 0, 14, 9, 6, 3, 3, 4, 15, 6, 5, 10,
- 1, 2, 13, 8, 12, 5, 7, 14, 11, 12, 4, 11, 2, 15, 8, 1,
- 13, 1, 6, 10, 4, 13, 9, 0, 8, 6, 15, 9, 3, 8, 0, 7,
- 11, 4, 1, 15, 2, 14, 12, 3, 5, 11, 10, 5, 14, 2, 7, 12
+ 10, 13, 0, 7, 9, 0, 14, 9, 6, 3, 3, 4, 15, 6, 5, 10,
+ 1, 2, 13, 8, 12, 5, 7, 14, 11, 12, 4, 11, 2, 15, 8, 1,
+ 13, 1, 6, 10, 4, 13, 9, 0, 8, 6, 15, 9, 3, 8, 0, 7,
+ 11, 4, 1, 15, 2, 14, 12, 3, 5, 11, 10, 5, 14, 2, 7, 12
},
{
- 7, 13, 13, 8, 14, 11, 3, 5, 0, 6, 6, 15, 9, 0, 10, 3,
- 1, 4, 2, 7, 8, 2, 5, 12, 11, 1, 12, 10, 4, 14, 15, 9,
- 10, 3, 6, 15, 9, 0, 0, 6, 12, 10, 11, 1, 7, 13, 13, 8,
- 15, 9, 1, 4, 3, 5, 14, 11, 5, 12, 2, 7, 8, 2, 4, 14
+ 7, 13, 13, 8, 14, 11, 3, 5, 0, 6, 6, 15, 9, 0, 10, 3,
+ 1, 4, 2, 7, 8, 2, 5, 12, 11, 1, 12, 10, 4, 14, 15, 9,
+ 10, 3, 6, 15, 9, 0, 0, 6, 12, 10, 11, 1, 7, 13, 13, 8,
+ 15, 9, 1, 4, 3, 5, 14, 11, 5, 12, 2, 7, 8, 2, 4, 14
},
{
- 2, 14, 12, 11, 4, 2, 1, 12, 7, 4, 10, 7, 11, 13, 6, 1,
- 8, 5, 5, 0, 3, 15, 15, 10, 13, 3, 0, 9, 14, 8, 9, 6,
- 4, 11, 2, 8, 1, 12, 11, 7, 10, 1, 13, 14, 7, 2, 8, 13,
- 15, 6, 9, 15, 12, 0, 5, 9, 6, 10, 3, 4, 0, 5, 14, 3
+ 2, 14, 12, 11, 4, 2, 1, 12, 7, 4, 10, 7, 11, 13, 6, 1,
+ 8, 5, 5, 0, 3, 15, 15, 10, 13, 3, 0, 9, 14, 8, 9, 6,
+ 4, 11, 2, 8, 1, 12, 11, 7, 10, 1, 13, 14, 7, 2, 8, 13,
+ 15, 6, 9, 15, 12, 0, 5, 9, 6, 10, 3, 4, 0, 5, 14, 3
},
{
- 12, 10, 1, 15, 10, 4, 15, 2, 9, 7, 2, 12, 6, 9, 8, 5,
- 0, 6, 13, 1, 3, 13, 4, 14, 14, 0, 7, 11, 5, 3, 11, 8,
- 9, 4, 14, 3, 15, 2, 5, 12, 2, 9, 8, 5, 12, 15, 3, 10,
- 7, 11, 0, 14, 4, 1, 10, 7, 1, 6, 13, 0, 11, 8, 6, 13
+ 12, 10, 1, 15, 10, 4, 15, 2, 9, 7, 2, 12, 6, 9, 8, 5,
+ 0, 6, 13, 1, 3, 13, 4, 14, 14, 0, 7, 11, 5, 3, 11, 8,
+ 9, 4, 14, 3, 15, 2, 5, 12, 2, 9, 8, 5, 12, 15, 3, 10,
+ 7, 11, 0, 14, 4, 1, 10, 7, 1, 6, 13, 0, 11, 8, 6, 13
},
{
- 4, 13, 11, 0, 2, 11, 14, 7, 15, 4, 0, 9, 8, 1, 13, 10,
- 3, 14, 12, 3, 9, 5, 7, 12, 5, 2, 10, 15, 6, 8, 1, 6,
- 1, 6, 4, 11, 11, 13, 13, 8, 12, 1, 3, 4, 7, 10, 14, 7,
- 10, 9, 15, 5, 6, 0, 8, 15, 0, 14, 5, 2, 9, 3, 2, 12
+ 4, 13, 11, 0, 2, 11, 14, 7, 15, 4, 0, 9, 8, 1, 13, 10,
+ 3, 14, 12, 3, 9, 5, 7, 12, 5, 2, 10, 15, 6, 8, 1, 6,
+ 1, 6, 4, 11, 11, 13, 13, 8, 12, 1, 3, 4, 7, 10, 14, 7,
+ 10, 9, 15, 5, 6, 0, 8, 15, 0, 14, 5, 2, 9, 3, 2, 12
},
{
- 13, 1, 2, 15, 8, 13, 4, 8, 6, 10, 15, 3, 11, 7, 1, 4,
- 10, 12, 9, 5, 3, 6, 14, 11, 5, 0, 0, 14, 12, 9, 7, 2,
- 7, 2, 11, 1, 4, 14, 1, 7, 9, 4, 12, 10, 14, 8, 2, 13,
- 0, 15, 6, 12, 10, 9, 13, 0, 15, 3, 3, 5, 5, 6, 8, 11
+ 13, 1, 2, 15, 8, 13, 4, 8, 6, 10, 15, 3, 11, 7, 1, 4,
+ 10, 12, 9, 5, 3, 6, 14, 11, 5, 0, 0, 14, 12, 9, 7, 2,
+ 7, 2, 11, 1, 4, 14, 1, 7, 9, 4, 12, 10, 14, 8, 2, 13,
+ 0, 15, 6, 12, 10, 9, 13, 0, 15, 3, 3, 5, 5, 6, 8, 11
}
};
static void
perm(a, e, pc, n)
- register char *a, *e;
- register char *pc;
- int n;
+register char *a, *e;
+register char *pc;
+int n;
{
for (; n--; pc++, a++)
- *a = e[*pc];
+ *a = e[(int)*pc];
}
static void
crypt_main(nachr_l, nachr_r, schl)
- register char *nachr_l, *nachr_r;
- register char *schl;
+register char *nachr_l, *nachr_r;
+register char *schl;
{
char tmp[KS];
register int sbval;
register int i, j;
for (i = 0; i < 8; i++) {
- for (j = 0, sbval = 0; j < 6; j++)
- sbval = (sbval << 1) | (nachr_r[*e++] ^ *schl++);
- sbval = S_BOX[i][sbval];
- for (tp += 4, j = 4; j--; sbval >>= 1)
- *--tp = sbval & 1;
- tp += 4;
+ for (j = 0, sbval = 0; j < 6; j++)
+ sbval = (sbval << 1) | (nachr_r[(int)*e++] ^ *schl++);
+ sbval = S_BOX[i][sbval];
+ for (tp += 4, j = 4; j--; sbval >>= 1)
+ *--tp = sbval & 1;
+ tp += 4;
}
e = PERM;
for (i = 0; i < BS2; i++)
- *nachr_l++ ^= tmp[*e++];
+ *nachr_l++ ^= tmp[(int)*e++];
}
void
perm(tmp, nachr, IP, BS);
for (i = 8; i--;) {
- crypt_main(tmp, tmp + BS2, *schl);
- if (decr)
- schl--;
- else
- schl++;
- crypt_main(tmp + BS2, tmp, *schl);
- if (decr)
- schl--;
- else
- schl++;
+ crypt_main(tmp, tmp + BS2, *schl);
+ if (decr)
+ schl--;
+ else
+ schl++;
+ crypt_main(tmp + BS2, tmp, *schl);
+ if (decr)
+ schl--;
+ else
+ schl++;
}
perm(nachr, tmp, EP, BS);
perm(tmp1, schl, PC1, IS);
for (i = 0; i < 16; i++) {
- shval += 1 + (ls & 1);
- akt_schl = schluessel[i];
- for (j = 0; j < KS; j++) {
- if ((k = PC2[j]) >= IS2) {
- if ((k += shval) >= IS)
- k = (k - IS2) % IS2 + IS2;
- } else if ((k += shval) >= IS2)
- k %= IS2;
- *akt_schl++ = tmp1[k];
- }
- ls >>= 1;
+ shval += 1 + (ls & 1);
+ akt_schl = schluessel[i];
+ for (j = 0; j < KS; j++) {
+ if ((k = PC2[j]) >= IS2) {
+ if ((k += shval) >= IS)
+ k = (k - IS2) % IS2 + IS2;
+ } else if ((k += shval) >= IS2)
+ k %= IS2;
+ *akt_schl++ = tmp1[k];
+ }
+ ls >>= 1;
}
}
memset(key, 0, BS + 2);
for (k = key, i = 0; i < BS; i++) {
- if (!(keybyte = *wort++))
- break;
- k += 7;
- for (j = 0; j < 7; j++, i++) {
- *--k = keybyte & 1;
- keybyte >>= 1;
- }
- k += 8;
+ if (!(keybyte = *wort++))
+ break;
+ k += 7;
+ for (j = 0; j < 7; j++, i++) {
+ *--k = keybyte & 1;
+ keybyte >>= 1;
+ }
+ k += 8;
}
setkey(key);
memset(key, 0, BS + 2);
for (k = E, i = 0; i < 2; i++) {
- retkey[i] = keybyte = *salt++;
- if (keybyte > 'Z')
- keybyte -= 'a' - 'Z' - 1;
- if (keybyte > '9')
- keybyte -= 'A' - '9' - 1;
- keybyte -= '.';
-
- for (j = 0; j < 6; j++, keybyte >>= 1, k++) {
- if (!(keybyte & 1))
- continue;
- tmp = *k;
- *k = k[24];
- k[24] = tmp;
- }
+ retkey[i] = keybyte = *salt++;
+ if (keybyte > 'Z')
+ keybyte -= 'a' - 'Z' - 1;
+ if (keybyte > '9')
+ keybyte -= 'A' - '9' - 1;
+ keybyte -= '.';
+
+ for (j = 0; j < 6; j++, keybyte >>= 1, k++) {
+ if (!(keybyte & 1))
+ continue;
+ tmp = *k;
+ *k = k[24];
+ k[24] = tmp;
+ }
}
for (i = 0; i < 25; i++)
- encrypt(key, 0);
+ encrypt(key, 0);
for (k = key, i = 0; i < 11; i++) {
- for (j = keybyte = 0; j < 6; j++) {
- keybyte <<= 1;
- keybyte |= *k++;
- }
-
- keybyte += '.';
- if (keybyte > '9')
- keybyte += 'A' - '9' - 1;
- if (keybyte > 'Z')
- keybyte += 'a' - 'Z' - 1;
- retkey[i + 2] = keybyte;
+ for (j = keybyte = 0; j < 6; j++) {
+ keybyte <<= 1;
+ keybyte |= *k++;
+ }
+
+ keybyte += '.';
+ if (keybyte > '9')
+ keybyte += 'A' - '9' - 1;
+ if (keybyte > 'Z')
+ keybyte += 'a' - 'Z' - 1;
+ retkey[i + 2] = keybyte;
}
retkey[i + 2] = 0;
if (!retkey[1])
- retkey[1] = *retkey;
+ retkey[1] = *retkey;
return retkey;
}
+
projects / thirdparty / squid.git / blobdiff