annotate dropbearkey.c @ 1006:0aa1feb8adda coverity

merge
author Matt Johnston <matt@ucc.asn.au>
date Wed, 28 Jan 2015 22:49:55 +0800
parents 6fb4c010c448
children c6346c63281b
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1 /*
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2 * Dropbear - a SSH2 server
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3 *
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4 * Copyright (c) 2002,2003 Matt Johnston
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5 * All rights reserved.
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6 *
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 * of this software and associated documentation files (the "Software"), to deal
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9 * in the Software without restriction, including without limitation the rights
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 * copies of the Software, and to permit persons to whom the Software is
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12 * furnished to do so, subject to the following conditions:
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13 *
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14 * The above copyright notice and this permission notice shall be included in
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15 * all copies or substantial portions of the Software.
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16 *
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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23 * SOFTWARE. */
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24
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25 /* The format of the keyfiles is basically a raw dump of the buffer. Data types
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26 * are specified in the transport rfc 4253 - string is a 32-bit len then the
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27 * non-null-terminated string, mp_int is a 32-bit len then the bignum data.
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28 * The actual functions are buf_put_rsa_priv_key() and buf_put_dss_priv_key()
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29
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30 * RSA:
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31 * string "ssh-rsa"
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32 * mp_int e
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33 * mp_int n
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34 * mp_int d
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35 * mp_int p (newer versions only)
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36 * mp_int q (newer versions only)
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37 *
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38 * DSS:
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39 * string "ssh-dss"
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40 * mp_int p
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41 * mp_int q
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42 * mp_int g
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43 * mp_int y
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44 * mp_int x
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45 *
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46 */
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47 #include "includes.h"
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48 #include "signkey.h"
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49 #include "buffer.h"
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50 #include "dbutil.h"
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51
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52 #include "genrsa.h"
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53 #include "gendss.h"
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54 #include "ecdsa.h"
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55 #include "crypto_desc.h"
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56 #include "dbrandom.h"
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57 #include "gensignkey.h"
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58
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59 static void printhelp(char * progname);
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60
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61
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62 static void printpubkey(sign_key * key, int keytype);
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63 static int printpubfile(const char* filename);
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64
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65 /* Print a help message */
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66 static void printhelp(char * progname) {
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67
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68 fprintf(stderr, "Usage: %s -t <type> -f <filename> [-s bits]\n"
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69 "-t type Type of key to generate. One of:\n"
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70 #ifdef DROPBEAR_RSA
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71 " rsa\n"
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72 #endif
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73 #ifdef DROPBEAR_DSS
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74 " dss\n"
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75 #endif
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76 #ifdef DROPBEAR_ECDSA
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77 " ecdsa\n"
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78 #endif
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79 "-f filename Use filename for the secret key.\n"
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80 " ~/.ssh/id_dropbear is recommended for client keys.\n"
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81 "-s bits Key size in bits, should be a multiple of 8 (optional)\n"
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82 #ifdef DROPBEAR_DSS
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83 " DSS has a fixed size of 1024 bits\n"
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84 #endif
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85 #ifdef DROPBEAR_ECDSA
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86 " ECDSA has sizes "
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87 #ifdef DROPBEAR_ECC_256
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88 "256 "
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89 #endif
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90 #ifdef DROPBEAR_ECC_384
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91 "384 "
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92 #endif
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93 #ifdef DROPBEAR_ECC_521
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94 "521 "
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95 #endif
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96 "\n"
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97 #endif
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98 "-y Just print the publickey and fingerprint for the\n private key in <filename>.\n"
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99 #ifdef DEBUG_TRACE
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100 "-v verbose\n"
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101 #endif
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102 ,progname);
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103 }
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104
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105 /* fails fatally */
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106 static void check_signkey_bits(enum signkey_type type, int bits)
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107 {
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108 switch (type) {
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109 #ifdef DROPBEAR_RSA
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110 case DROPBEAR_SIGNKEY_RSA:
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111 if (bits < 512 || bits > 4096 || (bits % 8 != 0)) {
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112 dropbear_exit("Bits must satisfy 512 <= bits <= 4096, and be a"
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113 " multiple of 8\n");
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114 }
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115 break;
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116 #endif
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117 #ifdef DROPEAR_DSS
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118 case DROPBEAR_SIGNKEY_DSS:
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119 if (bits != 1024) {
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120 dropbear_exit("DSS keys have a fixed size of 1024 bits\n");
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121 exit(EXIT_FAILURE);
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122 }
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123 #endif
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124 default:
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125 (void)0; /* quiet, compiler. ecdsa handles checks itself */
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126 }
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127 }
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128
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129 #if defined(DBMULTI_dropbearkey) || !defined(DROPBEAR_MULTI)
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130 #if defined(DBMULTI_dropbearkey) && defined(DROPBEAR_MULTI)
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131 int dropbearkey_main(int argc, char ** argv) {
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132 #else
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133 int main(int argc, char ** argv) {
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134 #endif
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135
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136 int i;
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137 char ** next = 0;
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138 char * filename = NULL;
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139 enum signkey_type keytype = DROPBEAR_SIGNKEY_NONE;
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140 char * typetext = NULL;
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141 char * sizetext = NULL;
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142 unsigned int bits = 0;
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143 int printpub = 0;
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144
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145 crypto_init();
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146 seedrandom();
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147
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148 /* get the commandline options */
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149 for (i = 1; i < argc; i++) {
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
150 if (argv[i] == NULL) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
151 continue; /* Whack */
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
152 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
153 if (next) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
154 *next = argv[i];
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
155 next = NULL;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
156 continue;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
157 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
158
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
159 if (argv[i][0] == '-') {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
160 switch (argv[i][1]) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
161 case 'f':
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
162 next = &filename;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
163 break;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
164 case 't':
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
165 next = &typetext;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
166 break;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167 case 's':
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
168 next = &sizetext;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169 break;
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
170 case 'y':
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
171 printpub = 1;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
172 break;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173 case 'h':
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174 printhelp(argv[0]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
175 exit(EXIT_SUCCESS);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176 break;
94
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline
Matt Johnston <matt@ucc.asn.au>
parents: 73
diff changeset
177 #ifdef DEBUG_TRACE
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline
Matt Johnston <matt@ucc.asn.au>
parents: 73
diff changeset
178 case 'v':
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline
Matt Johnston <matt@ucc.asn.au>
parents: 73
diff changeset
179 debug_trace = 1;
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline
Matt Johnston <matt@ucc.asn.au>
parents: 73
diff changeset
180 break;
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline
Matt Johnston <matt@ucc.asn.au>
parents: 73
diff changeset
181 #endif
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182 default:
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183 fprintf(stderr, "Unknown argument %s\n", argv[i]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
184 printhelp(argv[0]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185 exit(EXIT_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186 break;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
188 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
190
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
191 if (!filename) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
192 fprintf(stderr, "Must specify a key filename\n");
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
193 printhelp(argv[0]);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
194 exit(EXIT_FAILURE);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
195 }
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
196
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
197 if (printpub) {
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
198 int ret = printpubfile(filename);
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
199 exit(ret);
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
200 }
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
201
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 /* check/parse args */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
203 if (!typetext) {
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
204 fprintf(stderr, "Must specify key type\n");
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
205 printhelp(argv[0]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206 exit(EXIT_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
208
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
209 #ifdef DROPBEAR_RSA
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
210 if (strcmp(typetext, "rsa") == 0)
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
211 {
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
212 keytype = DROPBEAR_SIGNKEY_RSA;
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
213 }
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
214 #endif
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
215 #ifdef DROPBEAR_DSS
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
216 if (strcmp(typetext, "dss") == 0)
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
217 {
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
218 keytype = DROPBEAR_SIGNKEY_DSS;
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
219 }
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
220 #endif
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
221 #ifdef DROPBEAR_ECDSA
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
222 if (strcmp(typetext, "ecdsa") == 0)
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
223 {
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
224 keytype = DROPBEAR_SIGNKEY_ECDSA_KEYGEN;
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
225 }
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
226 #endif
794
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 766
diff changeset
227
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 766
diff changeset
228 if (keytype == DROPBEAR_SIGNKEY_NONE) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
229 fprintf(stderr, "Unknown key type '%s'\n", typetext);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
230 printhelp(argv[0]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
231 exit(EXIT_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
232 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
233
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
234 if (sizetext) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235 if (sscanf(sizetext, "%u", &bits) != 1) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 fprintf(stderr, "Bits must be an integer\n");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
237 exit(EXIT_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
238 }
457
e430a26064ee Make dropbearkey only generate 1024 bit keys
Matt Johnston <matt@ucc.asn.au>
parents: 340
diff changeset
239
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
240 check_signkey_bits(keytype, bits);;
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
241 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
243 fprintf(stderr, "Generating key, this may take a while...\n");
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
244 if (signkey_generate(keytype, bits, filename) == DROPBEAR_FAILURE)
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
245 {
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
246 dropbear_exit("Failed to generate key.\n");
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
247 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
248
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
249 printpubfile(filename);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
250
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
251 return EXIT_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
252 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
253 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
254
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
255 static int printpubfile(const char* filename) {
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
256
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
257 buffer *buf = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
258 sign_key *key = NULL;
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 840
diff changeset
259 enum signkey_type keytype;
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
260 int ret;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
261 int err = DROPBEAR_FAILURE;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
262
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
263 buf = buf_new(MAX_PRIVKEY_SIZE);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
264 ret = buf_readfile(buf, filename);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
265
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
266 if (ret != DROPBEAR_SUCCESS) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
267 fprintf(stderr, "Failed reading '%s'\n", filename);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
268 goto out;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
269 }
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
270
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
271 key = new_sign_key();
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
272 keytype = DROPBEAR_SIGNKEY_ANY;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
273
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
274 buf_setpos(buf, 0);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
275 ret = buf_get_priv_key(buf, key, &keytype);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
276 if (ret == DROPBEAR_FAILURE) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
277 fprintf(stderr, "Bad key in '%s'\n", filename);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
278 goto out;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
279 }
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
280
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
281 printpubkey(key, keytype);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
282
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
283 err = DROPBEAR_SUCCESS;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
284
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
285 out:
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
286 buf_burn(buf);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
287 buf_free(buf);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
288 buf = NULL;
340
454a34b2dfd1 Fixes from Erik Hovland:
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
289 if (key) {
454a34b2dfd1 Fixes from Erik Hovland:
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
290 sign_key_free(key);
454a34b2dfd1 Fixes from Erik Hovland:
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
291 key = NULL;
454a34b2dfd1 Fixes from Erik Hovland:
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
292 }
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
293 return err;
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
294 }
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
295
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
296 static void printpubkey(sign_key * key, int keytype) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
297
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
298 buffer * buf = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
299 unsigned char base64key[MAX_PUBKEY_SIZE*2];
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
300 unsigned long base64len;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
301 int err;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
302 const char * typestring = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
303 char *fp = NULL;
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304 int len;
324
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305 struct passwd * pw = NULL;
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306 char * username = NULL;
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307 char hostname[100];
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308
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309 buf = buf_new(MAX_PUBKEY_SIZE);
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310 buf_put_pub_key(buf, key, keytype);
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311 buf_setpos(buf, 4);
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312
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313 len = buf->len - buf->pos;
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314
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315 base64len = sizeof(base64key);
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316 err = base64_encode(buf_getptr(buf, len), len, base64key, &base64len);
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317
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318 if (err != CRYPT_OK) {
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319 fprintf(stderr, "base64 failed");
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320 }
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321
794
d386defb5376 more ecdsa signkey work, not correct
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322 typestring = signkey_name_from_type(keytype, NULL);
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323
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324 fp = sign_key_fingerprint(buf_getptr(buf, len), len);
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325
324
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326 /* a user@host comment is informative */
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327 username = "";
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328 pw = getpwuid(getuid());
325
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329 if (pw) {
324
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330 username = pw->pw_name;
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331 }
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332
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333 gethostname(hostname, sizeof(hostname));
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334 hostname[sizeof(hostname)-1] = '\0';
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335
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336 printf("Public key portion is:\n%s %s %s@%s\nFingerprint: %s\n",
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337 typestring, base64key, username, hostname, fp);
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338
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339 m_free(fp);
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340 buf_free(buf);
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341 }