kdc/string2key.c

   1 /*
   2  * Copyright (c) 1997 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by Kungliga Tekniska
  20  *      Högskolan and its contributors.
  21  *
  22  * 4. Neither the name of the Institute nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include "headers.h"
  40 #include <getarg.h>
  41
  42 RCSID("$Id$");
  43
  44 int version5;
  45 int version4;
  46 int afs;
  47 char *principal;
  48 char *cell;
  49 char *password;
  50 char *keytype_str = "des";
  51 int version;
  52 int help;
  53
  54 struct getargs args[] = {
  55     { "version5", '5', arg_flag,   &version5, "Output Kerberos v5 string-to-key" },
  56     { "version4", '4', arg_flag,   &version4, "Output Kerberos v4 string-to-key" },
  57 #ifdef KRB4
  58     { "afs",      'a', arg_flag,   &afs, "Output AFS string-to-key" },
  59     { "cell",     'c', arg_string, &cell, "AFS cell to use", "cell" },
  60 #endif
  61     { "password", 'w', arg_string, &password, "Password to use", "password" },
  62     { "principal",'p', arg_string, &principal, "Kerberos v5 principal to use", "principal" },
  63     { "keytype",  'k', arg_string, &keytype_str, "Keytype" },
  64     { "version",    0, arg_flag,   &version, "print version" },
  65     { "help",       0, arg_flag,   &help, NULL }
  66 };
  67
  68 int num_args = sizeof(args) / sizeof(args[0]);
  69
  70 static void
  71 usage(int status)
  72 {
  73     arg_printusage (args, num_args, "password");
  74     exit(status);
  75 }
  76
  77 int
  78 main(int argc, char **argv)
  79 {
  80     krb5_context context;
  81     krb5_principal princ;
  82     krb5_data salt;
  83     krb5_keyblock key;
  84     int i;
  85     int optind;
  86     char buf[1024];
  87     krb5_keytype keytype;
  88     krb5_error_code ret;
  89
  90     set_progname(argv[0]);
  91     krb5_init_context(&context);
  92     optind = 0;
  93     if(getarg(args, num_args, argc, argv, &optind))
  94         usage(1);
  95
  96     if(help)
  97         usage(0);
  98
  99     if(version){
 100         fprintf(stderr, "string2key (%s-%s)\n", PACKAGE, VERSION);
 101         exit(0);
 102     }
 103
 104     argc -= optind;
 105     argv += optind;
 106
 107     if (argc > 1)
 108         usage(1);
 109
 110     if(!version5 && !version4 && !afs)
 111         version5 = 1;
 112
 113     ret = krb5_string_to_keytype(context, keytype_str, &keytype);
 114     if(ret)
 115         krb5_err(context, 1, ret, "%s", keytype);
 116
 117     if(keytype != KEYTYPE_DES && (afs || version4))
 118         krb5_errx(context, 1,
 119                   "DES is the only valid keytype for AFS and Kerberos 4");
 120
 121
 122     if(version5 && principal == NULL){
 123         printf("Kerberos v5 principal: ");
 124         fgets(buf, sizeof(buf), stdin);
 125         buf[strlen(buf) - 1] = 0;
 126         principal = strdup(buf);
 127     }
 128 #ifdef KRB4
 129     if(afs && cell == NULL){
 130         printf("AFS cell: ");
 131         fgets(buf, sizeof(buf), stdin);
 132         buf[strlen(buf) - 1] = 0;
 133         cell = strdup(buf);
 134     }
 135 #endif
 136     if(argv[0])
 137         password = argv[0];
 138     if(password == NULL){
 139         des_read_pw_string(buf, sizeof(buf), "Password: ", 0);
 140         password = buf;
 141     }
 142
 143     if(version5){
 144         krb5_parse_name(context, principal, &princ);
 145         salt.length = 0;
 146         salt.data = NULL;
 147         krb5_get_salt(princ, &salt);
 148         krb5_string_to_key(password, &salt, keytype, &key);
 149         printf("Kerberos v5 key: ");
 150         for(i = 0; i < key.keyvalue.length; i++)
 151             printf("%02x", ((unsigned char*)key.keyvalue.data)[i]);
 152         printf("\n");
 153     }
 154     if(version4){
 155         des_cblock key;
 156         des_string_to_key(password, &key);
 157         printf("Kerberos v4 key: ");
 158         for(i = 0; i < 8; i++)
 159             printf("%02x", ((unsigned char*)key)[i]);
 160         printf("\n");
 161     }
 162 #ifdef KRB4
 163     if(afs){
 164         des_cblock key;
 165         afs_string_to_key(password, cell, &key);
 166         printf("AFS key:         ");
 167         for(i = 0; i < 8; i++)
 168             printf("%02x", ((unsigned char*)key)[i]);
 169         printf("\n");
 170     }
 171 #endif
 172     return 0;
 173 }