3 #if defined(HAVE_KERBEROS) && !defined(openbsd)
5 * $Source: /repo/OpenLDAP/pkg/ldap/clients/ud/string_to_key.c,v $
8 * Copyright 1985, 1986, 1987, 1988, 1989 by the Massachusetts Institute
11 * For copying and distribution information, please see the file
14 * These routines perform encryption and decryption using the DES
15 * private key algorithm, or else a subset of it-- fewer inner loops.
16 * (AUTH_DES_ITER defaults to 16, may be less.)
18 * Under U.S. law, this software may not be exported outside the US
19 * without license from the U.S. Commerce department.
21 * The key schedule is passed as an arg, as well as the cleartext or
22 * ciphertext. The cleartext and ciphertext should be in host order.
24 * These routines form the library interface to the DES facilities.
26 * spm 8/85 MIT project athena
33 extern int des_debug_print();
34 extern void des_fixup_key_parity();
36 #ifndef HAVE_AFS_KERBEROS
37 #define WORLDPEACEINOURTIME
40 #if defined(WORLDPEACEINOURTIME) /* Use original, not ifs version */
41 #ifndef HAVE_KERBEROS_V
43 * convert an arbitrary length string to a DES key
46 des_string_to_key( char *str, register des_cblock *key )
48 register char *in_str;
49 register unsigned temp,i;
52 static unsigned char *k_p;
54 register char *p_char;
55 static char k_char[64];
56 static des_key_schedule key_sked;
57 extern unsigned long des_cbc_cksum();
64 /* init key array for bits */
65 memset(k_char, 0, sizeof(k_char));
70 "\n\ninput str length = %d string = %s\nstring = 0x ",
74 /* get next 8 bytes, strip parity, xor */
75 for (i = 1; i <= length; i++) {
76 /* get next input key byte */
77 temp = (unsigned int) *str++;
80 fprintf(stdout,"%02x ",temp & 0xff);
82 /* loop through bits within byte, ignore parity */
83 for (j = 0; j <= 6; j++) {
85 *p_char++ ^= (int) temp & 01;
87 *--p_char ^= (int) temp & 01;
91 /* check and flip direction */
96 /* now stuff into the key des_cblock, and force odd parity */
98 k_p = (unsigned char *) key;
100 for (i = 0; i <= 7; i++) {
102 for (j = 0; j <= 6; j++)
103 temp |= *p_char++ << (1+j);
104 *k_p++ = (unsigned char) temp;
108 des_fixup_key_parity(key);
110 /* Now one-way encrypt it with the folded key */
111 (void) des_key_sched(key,key_sked);
112 (void) des_cbc_cksum((des_cblock *)in_str,key,length,key_sked,key);
114 memset((char *)key_sked, 0, sizeof(key_sked));
116 /* now fix up key parity again */
117 des_fixup_key_parity(key);
121 "\nResulting string_to_key = 0x%x 0x%x\n",
122 *((unsigned long *) key),
123 *((unsigned long *) key+1));
126 #endif /* HAVE_KERBEROS_V */
127 #else /* Use ifs version */
131 /* These two needed for rxgen output to work */
132 #include <sys/types.h>
134 #include <afs/cellconfig.h>
135 #include <afs/auth.h>
137 #include "/usr/andy/kauth/kauth.h"
138 #include "/usr/andy/kauth/kautils.h"
141 /* This defines the Andrew string_to_key function. It accepts a password
142 string as input and converts its via a one-way encryption algorithm to a DES
143 encryption key. It is compatible with the original Andrew authentication
144 service password database. */
149 char *cell, /* cell for password */
152 { char password[8+1]; /* crypt is limited to 8 chars anyway */
156 memset(key, 0, sizeof(des_cblock));
157 memset(password, 0, sizeof(password));
159 strncpy (password, cell, 8);
160 passlen = strlen (str);
161 if (passlen > 8) passlen = 8;
163 for (i=0; i<passlen; i++)
164 password[i] = str[i] ^ cell[i];
167 if (password[i] == '\0') password[i] = 'X';
169 /* crypt only considers the first 8 characters of password but for some
170 reason returns eleven characters of result (plus the two salt chars). */
171 strncpy(key, crypt(password, "#~") + 2, sizeof(des_cblock));
173 /* parity is inserted into the LSB so leftshift each byte up one bit. This
174 allows ascii characters with a zero MSB to retain as much significance
176 { char *keybytes = (char *)key;
179 for (i = 0; i < 8; i++) {
180 temp = (unsigned int) keybytes[i];
181 keybytes[i] = (unsigned char) (temp << 1);
184 des_fixup_key_parity (key);
190 char *cell, /* cell for password */
193 { des_key_schedule schedule;
196 char password[BUFSIZ];
199 strncpy (password, str, sizeof(password));
200 if ((passlen = strlen (password)) < sizeof(password)-1)
201 strncat (password, cell, sizeof(password)-passlen);
202 if ((passlen = strlen(password)) > sizeof(password)) passlen = sizeof(password);
204 memcpy(ivec, "kerberos", 8);
205 memcpy(temp_key, "kerberos", 8);
206 des_fixup_key_parity (temp_key);
207 des_key_sched (temp_key, schedule);
208 des_cbc_cksum (password, ivec, passlen, schedule, ivec);
210 memcpy(temp_key, ivec, 8);
211 des_fixup_key_parity (temp_key);
212 des_key_sched (temp_key, schedule);
213 des_cbc_cksum (password, key, passlen, schedule, ivec);
215 des_fixup_key_parity (key);
221 char *cell, /* cell for password */
224 { char realm[REALM_SZ];
229 code = ka_CellToRealm (cell, realm, 0/*local*/);
231 if (code) strcpy (realm, "");
232 else lcstring (realm, realm, sizeof(realm)); /* for backward compatibility */
234 (void)strcpy(realm, cell);
237 if (strlen(str) > 8) StringToKey (str, realm, key);
238 else Andrew_StringToKey (str, realm, key);
242 * convert an arbitrary length string to a DES key
245 des_string_to_key( char *str, register des_cblock *key )
247 /* NB: i should probably call routine to get local cell here */
248 ka_StringToKey(str, "umich.edu", key);
252 #endif /* Use IFS Version */
254 #endif /* kerberos */