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xcrypt.c (175965) xcrypt.c (189087)
1/*
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
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
8 *

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28 */
29/*
30 * Hex encryption/decryption and utility routines
31 *
32 * Copyright (C) 1986, Sun Microsystems, Inc.
33 */
34
35#include <sys/cdefs.h>
1/*
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
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
8 *

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28 */
29/*
30 * Hex encryption/decryption and utility routines
31 *
32 * Copyright (C) 1986, Sun Microsystems, Inc.
33 */
34
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD: head/lib/librpcsvc/xcrypt.c 175965 2008-02-04 07:56:36Z matteo $");
36__FBSDID("$FreeBSD: head/lib/librpcsvc/xcrypt.c 189087 2009-02-26 20:32:11Z ed $");
37
38#include <stdio.h>
39#include <stdlib.h>
40#include <string.h>
41#include <rpc/des_crypt.h>
42
43static char hex[16] = {
44 '0', '1', '2', '3', '4', '5', '6', '7',

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51void passwd2des( char *, char * );
52
53/*
54 * Encrypt a secret key given passwd
55 * The secret key is passed and returned in hex notation.
56 * Its length must be a multiple of 16 hex digits (64 bits).
57 */
58int
37
38#include <stdio.h>
39#include <stdlib.h>
40#include <string.h>
41#include <rpc/des_crypt.h>
42
43static char hex[16] = {
44 '0', '1', '2', '3', '4', '5', '6', '7',

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51void passwd2des( char *, char * );
52
53/*
54 * Encrypt a secret key given passwd
55 * The secret key is passed and returned in hex notation.
56 * Its length must be a multiple of 16 hex digits (64 bits).
57 */
58int
59xencrypt(secret, passwd)
60 char *secret;
61 char *passwd;
59xencrypt(char *secret, char *passwd)
62{
63 char key[8];
64 char ivec[8];
65 char *buf;
66 int err;
67 int len;
68
69 len = strlen(secret) / 2;

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86}
87
88/*
89 * Decrypt secret key using passwd
90 * The secret key is passed and returned in hex notation.
91 * Once again, the length is a multiple of 16 hex digits
92 */
93int
60{
61 char key[8];
62 char ivec[8];
63 char *buf;
64 int err;
65 int len;
66
67 len = strlen(secret) / 2;

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84}
85
86/*
87 * Decrypt secret key using passwd
88 * The secret key is passed and returned in hex notation.
89 * Once again, the length is a multiple of 16 hex digits
90 */
91int
94xdecrypt(secret, passwd)
95 char *secret;
96 char *passwd;
92xdecrypt(char *secret, char *passwd)
97{
98 char key[8];
99 char ivec[8];
100 char *buf;
101 int err;
102 int len;
103
104 len = strlen(secret) / 2;

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120 return (1);
121}
122
123
124/*
125 * Turn password into DES key
126 */
127void
93{
94 char key[8];
95 char ivec[8];
96 char *buf;
97 int err;
98 int len;
99
100 len = strlen(secret) / 2;

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116 return (1);
117}
118
119
120/*
121 * Turn password into DES key
122 */
123void
128passwd2des(pw, key)
129 char *pw;
130 char *key;
124passwd2des(char *pw, char *key)
131{
132 int i;
133
134 bzero(key, 8);
135 for (i = 0; *pw; i = (i+1)%8) {
136 key[i] ^= *pw++ << 1;
137 }
138 des_setparity(key);
139}
140
141
142
143/*
144 * Hex to binary conversion
145 */
146static void
125{
126 int i;
127
128 bzero(key, 8);
129 for (i = 0; *pw; i = (i+1)%8) {
130 key[i] ^= *pw++ << 1;
131 }
132 des_setparity(key);
133}
134
135
136
137/*
138 * Hex to binary conversion
139 */
140static void
147hex2bin(len, hexnum, binnum)
148 int len;
149 char *hexnum;
150 char *binnum;
141hex2bin(int len, char *hexnum, char *binnum)
151{
152 int i;
153
154 for (i = 0; i < len; i++) {
155 *binnum++ = 16 * hexval(hexnum[2*i]) + hexval(hexnum[2*i+1]);
156 }
157}
158
159/*
160 * Binary to hex conversion
161 */
162static void
142{
143 int i;
144
145 for (i = 0; i < len; i++) {
146 *binnum++ = 16 * hexval(hexnum[2*i]) + hexval(hexnum[2*i+1]);
147 }
148}
149
150/*
151 * Binary to hex conversion
152 */
153static void
163bin2hex(len, binnum, hexnum)
164 int len;
165 unsigned char *binnum;
166 char *hexnum;
154bin2hex(int len, unsigned char *binnum, char *hexnum)
167{
168 int i;
169 unsigned val;
170
171 for (i = 0; i < len; i++) {
172 val = binnum[i];
173 hexnum[i*2] = hex[val >> 4];
174 hexnum[i*2+1] = hex[val & 0xf];
175 }
176 hexnum[len*2] = 0;
177}
178
179static char
155{
156 int i;
157 unsigned val;
158
159 for (i = 0; i < len; i++) {
160 val = binnum[i];
161 hexnum[i*2] = hex[val >> 4];
162 hexnum[i*2+1] = hex[val & 0xf];
163 }
164 hexnum[len*2] = 0;
165}
166
167static char
180hexval(c)
181 char c;
168hexval(char c)
182{
183 if (c >= '0' && c <= '9') {
184 return (c - '0');
185 } else if (c >= 'a' && c <= 'z') {
186 return (c - 'a' + 10);
187 } else if (c >= 'A' && c <= 'Z') {
188 return (c - 'A' + 10);
189 } else {
190 return (-1);
191 }
192}
169{
170 if (c >= '0' && c <= '9') {
171 return (c - '0');
172 } else if (c >= 'a' && c <= 'z') {
173 return (c - 'a' + 10);
174 } else if (c >= 'A' && c <= 'Z') {
175 return (c - 'A' + 10);
176 } else {
177 return (-1);
178 }
179}