2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
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18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
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22 * or profits or other special, indirect and consequential damages, even if
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31 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
35 #ident "@(#)xcrypt.c 1.11 94/08/23 SMI"
38 #if !defined(lint) && defined(SCCSIDS)
39 static char sccsid[] = "@(#)xcrypt.c 1.3 89/03/24 Copyr 1986 Sun Micro";
43 * xcrypt.c: Hex encryption/decryption and utility routines
50 #include <sys/types.h>
51 #include <rpc/des_crypt.h>
53 static const char hex[16] =
55 '0', '1', '2', '3', '4', '5', '6', '7',
56 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f',
62 (c >= '0' && c <= '9' \
64 : ({ int upp = toupper (c); \
65 upp >= 'A' && upp <= 'Z' ? upp - 'A' + 10 : -1; }))
67 static char hexval (char) internal_function;
70 static void hex2bin (int, char *, char *) internal_function;
71 static void bin2hex (int, unsigned char *, char *) internal_function;
72 void passwd2des_internal (char *pw, char *key);
74 libc_hidden_proto (passwd2des_internal)
78 * Turn password into DES key
81 passwd2des_internal (char *pw, char *key)
86 for (i = 0; *pw && i < 8; ++i)
93 libc_hidden_def (passwd2des_internal)
94 strong_alias (passwd2des_internal, passwd2des)
96 void passwd2des (char *pw, char *key)
98 return passwd2des_internal (pw, key);
103 * Encrypt a secret key given passwd
104 * The secret key is passed and returned in hex notation.
105 * Its length must be a multiple of 16 hex digits (64 bits).
108 xencrypt (char *secret, char *passwd)
116 len = strlen (secret) / 2;
117 buf = malloc ((unsigned) len);
118 hex2bin (len, secret, buf);
119 passwd2des_internal (passwd, key);
122 err = cbc_crypt (key, buf, len, DES_ENCRYPT | DES_HW, ivec);
123 if (DES_FAILED (err))
128 bin2hex (len, (unsigned char *) buf, secret);
134 * Decrypt secret key using passwd
135 * The secret key is passed and returned in hex notation.
136 * Once again, the length is a multiple of 16 hex digits
139 xdecrypt (char *secret, char *passwd)
147 len = strlen (secret) / 2;
148 buf = malloc ((unsigned) len);
150 hex2bin (len, secret, buf);
151 passwd2des_internal (passwd, key);
154 err = cbc_crypt (key, buf, len, DES_DECRYPT | DES_HW, ivec);
155 if (DES_FAILED (err))
160 bin2hex (len, (unsigned char *) buf, secret);
166 * Hex to binary conversion
170 hex2bin (int len, char *hexnum, char *binnum)
174 for (i = 0; i < len; i++)
175 *binnum++ = 16 * hexval (hexnum[2 * i]) + hexval (hexnum[2 * i + 1]);
179 * Binary to hex conversion
183 bin2hex (int len, unsigned char *binnum, char *hexnum)
188 for (i = 0; i < len; i++)
191 hexnum[i * 2] = hex[val >> 4];
192 hexnum[i * 2 + 1] = hex[val & 0xf];
201 if (c >= '0' && c <= '9')
203 else if (c >= 'a' && c <= 'z')
204 return (c - 'a' + 10);
205 else if (c >= 'A' && c <= 'Z')
206 return (c - 'A' + 10);