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authorcvs2svn <admin@example.com>2004-03-22 14:57:04 +0000
committercvs2svn <admin@example.com>2004-03-22 14:57:04 +0000
commit8e32b76f8c63e27a8c61f3e7d76a05ce1f419061 (patch)
tree03dad5c33d913f60f2a0a8df81dfdfb65788c5d9 /src/lib/libcrypto/des/fcrypt.c
parentc051a3c4a24fa90cc755059f99d5c2e7131d5ca7 (diff)
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Diffstat (limited to 'src/lib/libcrypto/des/fcrypt.c')
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1 files changed, 0 insertions, 173 deletions
diff --git a/src/lib/libcrypto/des/fcrypt.c b/src/lib/libcrypto/des/fcrypt.c
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1/* NOCW */
2#include <stdio.h>
3#ifdef _OSD_POSIX
4#ifndef CHARSET_EBCDIC
5#define CHARSET_EBCDIC 1
6#endif
7#endif
8#ifdef CHARSET_EBCDIC
9#include <openssl/ebcdic.h>
10#endif
11
12/* This version of crypt has been developed from my MIT compatible
13 * DES library.
14 * Eric Young (eay@cryptsoft.com)
15 */
16
17/* Modification by Jens Kupferschmidt (Cu)
18 * I have included directive PARA for shared memory computers.
19 * I have included a directive LONGCRYPT to using this routine to cipher
20 * passwords with more then 8 bytes like HP-UX 10.x it used. The MAXPLEN
21 * definition is the maximum of length of password and can changed. I have
22 * defined 24.
23 */
24
25#include "des_locl.h"
26
27/* Added more values to handle illegal salt values the way normal
28 * crypt() implementations do. The patch was sent by
29 * Bjorn Gronvall <bg@sics.se>
30 */
31static unsigned const char con_salt[128]={
320xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,
330xDA,0xDB,0xDC,0xDD,0xDE,0xDF,0xE0,0xE1,
340xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,
350xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,
360xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,
370xFA,0xFB,0xFC,0xFD,0xFE,0xFF,0x00,0x01,
380x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
390x0A,0x0B,0x05,0x06,0x07,0x08,0x09,0x0A,
400x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12,
410x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,
420x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22,
430x23,0x24,0x25,0x20,0x21,0x22,0x23,0x24,
440x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,
450x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,
460x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,
470x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x44,
48};
49
50static unsigned const char cov_2char[64]={
510x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,
520x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44,
530x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,
540x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,
550x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62,
560x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,
570x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,
580x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A
59};
60
61void fcrypt_body(DES_LONG *out,DES_key_schedule *ks,
62 DES_LONG Eswap0, DES_LONG Eswap1);
63
64char *DES_crypt(const char *buf, const char *salt)
65 {
66 static char buff[14];
67
68#ifndef CHARSET_EBCDIC
69 return(DES_fcrypt(buf,salt,buff));
70#else
71 char e_salt[2+1];
72 char e_buf[32+1]; /* replace 32 by 8 ? */
73 char *ret;
74
75 /* Copy at most 2 chars of salt */
76 if ((e_salt[0] = salt[0]) != '\0')
77 e_salt[1] = salt[1];
78
79 /* Copy at most 32 chars of password */
80 strncpy (e_buf, buf, sizeof(e_buf));
81
82 /* Make sure we have a delimiter */
83 e_salt[sizeof(e_salt)-1] = e_buf[sizeof(e_buf)-1] = '\0';
84
85 /* Convert the e_salt to ASCII, as that's what DES_fcrypt works on */
86 ebcdic2ascii(e_salt, e_salt, sizeof e_salt);
87
88 /* Convert the cleartext password to ASCII */
89 ebcdic2ascii(e_buf, e_buf, sizeof e_buf);
90
91 /* Encrypt it (from/to ASCII) */
92 ret = DES_fcrypt(e_buf,e_salt,buff);
93
94 /* Convert the result back to EBCDIC */
95 ascii2ebcdic(ret, ret, strlen(ret));
96
97 return ret;
98#endif
99 }
100
101
102char *DES_fcrypt(const char *buf, const char *salt, char *ret)
103 {
104 unsigned int i,j,x,y;
105 DES_LONG Eswap0,Eswap1;
106 DES_LONG out[2],ll;
107 DES_cblock key;
108 DES_key_schedule ks;
109 unsigned char bb[9];
110 unsigned char *b=bb;
111 unsigned char c,u;
112
113 /* eay 25/08/92
114 * If you call crypt("pwd","*") as often happens when you
115 * have * as the pwd field in /etc/passwd, the function
116 * returns *\0XXXXXXXXX
117 * The \0 makes the string look like * so the pwd "*" would
118 * crypt to "*". This was found when replacing the crypt in
119 * our shared libraries. People found that the disabled
120 * accounts effectively had no passwd :-(. */
121#ifndef CHARSET_EBCDIC
122 x=ret[0]=((salt[0] == '\0')?'A':salt[0]);
123 Eswap0=con_salt[x]<<2;
124 x=ret[1]=((salt[1] == '\0')?'A':salt[1]);
125 Eswap1=con_salt[x]<<6;
126#else
127 x=ret[0]=((salt[0] == '\0')?os_toascii['A']:salt[0]);
128 Eswap0=con_salt[x]<<2;
129 x=ret[1]=((salt[1] == '\0')?os_toascii['A']:salt[1]);
130 Eswap1=con_salt[x]<<6;
131#endif
132
133/* EAY
134r=strlen(buf);
135r=(r+7)/8;
136*/
137 for (i=0; i<8; i++)
138 {
139 c= *(buf++);
140 if (!c) break;
141 key[i]=(c<<1);
142 }
143 for (; i<8; i++)
144 key[i]=0;
145
146 DES_set_key_unchecked(&key,&ks);
147 fcrypt_body(&(out[0]),&ks,Eswap0,Eswap1);
148
149 ll=out[0]; l2c(ll,b);
150 ll=out[1]; l2c(ll,b);
151 y=0;
152 u=0x80;
153 bb[8]=0;
154 for (i=2; i<13; i++)
155 {
156 c=0;
157 for (j=0; j<6; j++)
158 {
159 c<<=1;
160 if (bb[y] & u) c|=1;
161 u>>=1;
162 if (!u)
163 {
164 y++;
165 u=0x80;
166 }
167 }
168 ret[i]=cov_2char[c];
169 }
170 ret[13]='\0';
171 return(ret);
172 }
173