string2key.c revision 1.2
1 /* $NetBSD: string2key.c,v 1.2 2017/01/28 21:31:44 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1997-2003 Kungliga Tekniska Hgskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include "headers.h" 37 #include <krb5/getarg.h> 38 39 int version5; 40 int version4; 41 int afs; 42 char *principal; 43 char *cell; 44 char *password; 45 const char *keytype_str = "des3-cbc-sha1"; 46 int version; 47 int help; 48 49 struct getargs args[] = { 50 { "version5", '5', arg_flag, &version5, "Output Kerberos v5 string-to-key", 51 NULL }, 52 { "version4", '4', arg_flag, &version4, "Output Kerberos v4 string-to-key", 53 NULL }, 54 { "afs", 'a', arg_flag, &afs, "Output AFS string-to-key", NULL }, 55 { "cell", 'c', arg_string, &cell, "AFS cell to use", "cell" }, 56 { "password", 'w', arg_string, &password, "Password to use", "password" }, 57 { "principal",'p', arg_string, &principal, "Kerberos v5 principal to use", "principal" }, 58 { "keytype", 'k', arg_string, rk_UNCONST(&keytype_str), "Keytype", NULL }, 59 { "version", 0, arg_flag, &version, "print version", NULL }, 60 { "help", 0, arg_flag, &help, NULL, NULL } 61 }; 62 63 int num_args = sizeof(args) / sizeof(args[0]); 64 65 static void 66 usage(int status) 67 { 68 arg_printusage (args, num_args, NULL, "password"); 69 exit(status); 70 } 71 72 static void 73 tokey(krb5_context context, 74 krb5_enctype enctype, 75 const char *pw, 76 krb5_salt salt, 77 const char *label) 78 { 79 krb5_error_code ret; 80 size_t i; 81 krb5_keyblock key; 82 char *e; 83 84 ret = krb5_string_to_key_salt(context, enctype, pw, salt, &key); 85 if (ret) 86 krb5_err(context, 1, ret, "krb5_string_to_key_salt"); 87 ret = krb5_enctype_to_string(context, enctype, &e); 88 if (ret) 89 krb5_err(context, 1, ret, "krb5_enctype_to_string"); 90 printf(label, e); 91 printf(": "); 92 for(i = 0; i < key.keyvalue.length; i++) 93 printf("%02x", ((unsigned char*)key.keyvalue.data)[i]); 94 printf("\n"); 95 krb5_free_keyblock_contents(context, &key); 96 free(e); 97 } 98 99 int 100 main(int argc, char **argv) 101 { 102 krb5_context context; 103 krb5_principal princ; 104 krb5_salt salt; 105 int optidx; 106 char buf[1024]; 107 krb5_enctype etype; 108 krb5_error_code ret; 109 110 optidx = krb5_program_setup(&context, argc, argv, args, num_args, NULL); 111 112 if(help) 113 usage(0); 114 115 if(version){ 116 print_version (NULL); 117 return 0; 118 } 119 120 argc -= optidx; 121 argv += optidx; 122 123 if (argc > 1) 124 usage(1); 125 126 if(!version5 && !version4 && !afs) 127 version5 = 1; 128 129 ret = krb5_string_to_enctype(context, keytype_str, &etype); 130 if(ret) 131 krb5_err(context, 1, ret, "krb5_string_to_enctype"); 132 133 if((etype != (krb5_enctype)ETYPE_DES_CBC_CRC && 134 etype != (krb5_enctype)ETYPE_DES_CBC_MD4 && 135 etype != (krb5_enctype)ETYPE_DES_CBC_MD5) && 136 (afs || version4)) { 137 if(!version5) { 138 etype = ETYPE_DES_CBC_CRC; 139 } else { 140 krb5_errx(context, 1, 141 "DES is the only valid keytype for AFS and Kerberos 4"); 142 } 143 } 144 145 if(version5 && principal == NULL){ 146 printf("Kerberos v5 principal: "); 147 if(fgets(buf, sizeof(buf), stdin) == NULL) 148 return 1; 149 buf[strcspn(buf, "\r\n")] = '\0'; 150 principal = estrdup(buf); 151 } 152 if(afs && cell == NULL){ 153 printf("AFS cell: "); 154 if(fgets(buf, sizeof(buf), stdin) == NULL) 155 return 1; 156 buf[strcspn(buf, "\r\n")] = '\0'; 157 cell = estrdup(buf); 158 } 159 if(argv[0]) 160 password = argv[0]; 161 if(password == NULL){ 162 if(UI_UTIL_read_pw_string(buf, sizeof(buf), "Password: ", 0)) 163 return 1; 164 password = buf; 165 } 166 167 if(version5){ 168 ret = krb5_parse_name(context, principal, &princ); 169 if (ret) 170 krb5_err(context, 1, ret, "failed to unparse name: %s", principal); 171 ret = krb5_get_pw_salt(context, princ, &salt); 172 if (ret) 173 krb5_err(context, 1, ret, "failed to get salt for %s", principal); 174 175 tokey(context, etype, password, salt, "Kerberos 5 (%s)"); 176 krb5_free_salt(context, salt); 177 } 178 if(version4){ 179 salt.salttype = KRB5_PW_SALT; 180 salt.saltvalue.length = 0; 181 salt.saltvalue.data = NULL; 182 tokey(context, ETYPE_DES_CBC_MD5, password, salt, "Kerberos 4"); 183 } 184 if(afs){ 185 salt.salttype = KRB5_AFS3_SALT; 186 salt.saltvalue.length = strlen(cell); 187 salt.saltvalue.data = cell; 188 tokey(context, ETYPE_DES_CBC_MD5, password, salt, "AFS"); 189 } 190 return 0; 191 } 192
Indexes created Mon Mar 02 05:31:46 UTC 2026