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
61char *DES_crypt(const char *buf, const char *salt)
62	{
63	static char buff[14];
64
65#ifndef CHARSET_EBCDIC
66	return(DES_fcrypt(buf,salt,buff));
67#else
68	char e_salt[2+1];
69	char e_buf[32+1];	/* replace 32 by 8 ? */
70	char *ret;
71
72	/* Copy at most 2 chars of salt */
73	if ((e_salt[0] = salt[0]) != '\0')
74	    e_salt[1] = salt[1];
75
76	/* Copy at most 32 chars of password */
77	strncpy (e_buf, buf, sizeof(e_buf));
78
79	/* Make sure we have a delimiter */
80	e_salt[sizeof(e_salt)-1] = e_buf[sizeof(e_buf)-1] = '\0';
81
82	/* Convert the e_salt to ASCII, as that's what DES_fcrypt works on */
83	ebcdic2ascii(e_salt, e_salt, sizeof e_salt);
84
85	/* Convert the cleartext password to ASCII */
86	ebcdic2ascii(e_buf, e_buf, sizeof e_buf);
87
88	/* Encrypt it (from/to ASCII) */
89	ret = DES_fcrypt(e_buf,e_salt,buff);
90
91	/* Convert the result back to EBCDIC */
92	ascii2ebcdic(ret, ret, strlen(ret));
93
94	return ret;
95#endif
96	}
97
98
99char *DES_fcrypt(const char *buf, const char *salt, char *ret)
100	{
101	unsigned int i,j,x,y;
102	DES_LONG Eswap0,Eswap1;
103	DES_LONG out[2],ll;
104	DES_cblock key;
105	DES_key_schedule ks;
106	unsigned char bb[9];
107	unsigned char *b=bb;
108	unsigned char c,u;
109
110	/* eay 25/08/92
111	 * If you call crypt("pwd","*") as often happens when you
112	 * have * as the pwd field in /etc/passwd, the function
113	 * returns *\0XXXXXXXXX
114	 * The \0 makes the string look like * so the pwd "*" would
115	 * crypt to "*".  This was found when replacing the crypt in
116	 * our shared libraries.  People found that the disabled
117	 * accounts effectively had no passwd :-(. */
118#ifndef CHARSET_EBCDIC
119	x=ret[0]=((salt[0] == '\0')?'A':salt[0]);
120	Eswap0=con_salt[x]<<2;
121	x=ret[1]=((salt[1] == '\0')?'A':salt[1]);
122	Eswap1=con_salt[x]<<6;
123#else
124	x=ret[0]=((salt[0] == '\0')?os_toascii['A']:salt[0]);
125	Eswap0=con_salt[x]<<2;
126	x=ret[1]=((salt[1] == '\0')?os_toascii['A']:salt[1]);
127	Eswap1=con_salt[x]<<6;
128#endif
129
130/* EAY
131r=strlen(buf);
132r=(r+7)/8;
133*/
134	for (i=0; i<8; i++)
135		{
136		c= *(buf++);
137		if (!c) break;
138		key[i]=(c<<1);
139		}
140	for (; i<8; i++)
141		key[i]=0;
142
143	DES_set_key_unchecked(&key,&ks);
144	fcrypt_body(&(out[0]),&ks,Eswap0,Eswap1);
145
146	ll=out[0]; l2c(ll,b);
147	ll=out[1]; l2c(ll,b);
148	y=0;
149	u=0x80;
150	bb[8]=0;
151	for (i=2; i<13; i++)
152		{
153		c=0;
154		for (j=0; j<6; j++)
155			{
156			c<<=1;
157			if (bb[y] & u) c|=1;
158			u>>=1;
159			if (!u)
160				{
161				y++;
162				u=0x80;
163				}
164			}
165		ret[i]=cov_2char[c];
166		}
167	ret[13]='\0';
168	return(ret);
169	}
170
171