annotate dropbearkey.c @ 73:0bf5cebe622c

Dropbearkey can now print out pubkey portions
author Matt Johnston <matt@ucc.asn.au>
date Sat, 14 Aug 2004 17:35:28 +0000
parents b0316ce64e4b
children c85c88500ea6
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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 draft - 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
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55 static void printhelp(char * progname);
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56
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57 #define RSA_SIZE (1024/8) /* 1024 bit */
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58 #define DSS_SIZE (1024/8) /* 1024 bit */
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59
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60 static void buf_writefile(buffer * buf, const char * filename);
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61 static void printpubkey(sign_key * key, int keytype);
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62 static void justprintpub(const char* filename);
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63
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64 /* Print a help message */
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65 static void printhelp(char * progname) {
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66
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67 fprintf(stderr, "Usage: %s -t <type> -f <filename> [-s bits]\n"
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68 "Options are:\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 "-f filename Use filename for the secret key\n"
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77 "-s bits Key size in bits, should be a multiple of 8 (optional)\n"
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78 "-y Just print the publickey and fingerprint for the\n private key in <filename>.\n",
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79 progname);
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80 }
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81
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82 #if defined(DBMULTI_dropbearkey) || !defined(DROPBEAR_MULTI)
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83 #if defined(DBMULTI_dropbearkey) && defined(DROPBEAR_MULTI)
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84 int dropbearkey_main(int argc, char ** argv) {
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85 #else
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86 int main(int argc, char ** argv) {
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87 #endif
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88
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89 int i;
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90 char ** next = 0;
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91 sign_key *key = NULL;
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92 buffer *buf = NULL;
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93 char * filename = NULL;
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94 int keytype = -1;
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95 char * typetext = NULL;
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96 char * sizetext = NULL;
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97 unsigned int bits;
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98 unsigned int keysize;
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99 int printpub = 0;
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100
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101 /* get the commandline options */
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102 for (i = 1; i < argc; i++) {
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103 if (argv[i] == NULL) {
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104 continue; /* Whack */
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105 }
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106 if (next) {
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107 *next = argv[i];
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108 next = NULL;
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109 continue;
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110 }
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111
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112 if (argv[i][0] == '-') {
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113 switch (argv[i][1]) {
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114 case 'f':
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115 next = &filename;
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116 break;
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117 case 't':
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118 next = &typetext;
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119 break;
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120 case 's':
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121 next = &sizetext;
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122 break;
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123 case 'y':
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124 printpub = 1;
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125 break;
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126 case 'h':
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127 printhelp(argv[0]);
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128 exit(EXIT_SUCCESS);
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129 break;
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130 default:
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131 fprintf(stderr, "Unknown argument %s\n", argv[i]);
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132 printhelp(argv[0]);
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133 exit(EXIT_FAILURE);
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134 break;
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135 }
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136 }
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137 }
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138
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139 if (!filename) {
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140 fprintf(stderr, "Must specify a key filename\n");
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141 printhelp(argv[0]);
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142 exit(EXIT_FAILURE);
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143 }
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144
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145 if (printpub) {
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146 justprintpub(filename);
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147 /* Not reached */
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148 }
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149
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150 /* check/parse args */
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151 if (!typetext) {
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152 fprintf(stderr, "Must specify key type\n");
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153 printhelp(argv[0]);
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diff changeset
154 exit(EXIT_FAILURE);
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parents:
diff changeset
155 }
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parents:
diff changeset
156
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
157 if (strlen(typetext) == 3) {
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parents:
diff changeset
158 #ifdef DROPBEAR_RSA
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parents:
diff changeset
159 if (strncmp(typetext, "rsa", 3) == 0) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
160 keytype = DROPBEAR_SIGNKEY_RSA;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
161 TRACE(("type is rsa"));
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
162 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
163 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
164 #ifdef DROPBEAR_DSS
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
165 if (strncmp(typetext, "dss", 3) == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
166 keytype = DROPBEAR_SIGNKEY_DSS;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167 TRACE(("type is dss"));
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parents:
diff changeset
168 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
170 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
171 if (keytype == -1) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172 fprintf(stderr, "Unknown key type '%s'\n", typetext);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173 printhelp(argv[0]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174 exit(EXIT_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
175 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
177 if (sizetext) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
178 if (sscanf(sizetext, "%u", &bits) != 1) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
179 fprintf(stderr, "Bits must be an integer\n");
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parents:
diff changeset
180 exit(EXIT_FAILURE);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183 if (bits < 512 || bits > 4096 || (bits % 8 != 0)) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
184 fprintf(stderr, "Bits must satisfy 512 <= bits <= 4096, and be a"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185 " multiple of 8\n");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186 exit(EXIT_FAILURE);
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parents:
diff changeset
187 }
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parents:
diff changeset
188
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189 keysize = bits / 8;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
190 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
191 if (keytype == DROPBEAR_SIGNKEY_DSS) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
192 keysize = DSS_SIZE;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
193 } else if (keytype == DROPBEAR_SIGNKEY_RSA) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
194 keysize = RSA_SIZE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
195 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
196 exit(EXIT_FAILURE); /* not reached */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
197 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
198 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
199
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
200
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
201 fprintf(stderr, "Will output %d bit %s secret key to '%s'\n", keysize*8,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 typetext, filename);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
203
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
204 /* don't want the file readable by others */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
205 umask(077);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207 /* now we can generate the key */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
208 key = new_sign_key();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
209
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
210 fprintf(stderr, "Generating key, this may take a while...\n");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
211 switch(keytype) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212 #ifdef DROPBEAR_RSA
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
213 case DROPBEAR_SIGNKEY_RSA:
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
214 key->rsakey = gen_rsa_priv_key(keysize); /* 128 bytes = 1024 bit */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
215 break;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
217 #ifdef DROPBEAR_DSS
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218 case DROPBEAR_SIGNKEY_DSS:
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
219 key->dsskey = gen_dss_priv_key(keysize); /* 128 bytes = 1024 bit */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
220 break;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
221 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
222 default:
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
223 fprintf(stderr, "Internal error, bad key type\n");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224 exit(EXIT_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
225 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
226
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
227 buf = buf_new(MAX_PRIVKEY_SIZE);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
228
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
229 buf_put_priv_key(buf, key, keytype);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
230 buf_setpos(buf, 0);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
231 buf_writefile(buf, filename);
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 buf_burn(buf);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
234 buf_free(buf);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
236 printpubkey(key, keytype);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
237
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
238 sign_key_free(key);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
239
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
240 return EXIT_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
243
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
244 static void justprintpub(const char* filename) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
245
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
246 buffer *buf = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
247 sign_key *key = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
248 int keytype;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
249 int ret;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
250 int err = DROPBEAR_FAILURE;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
251
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
252 buf = buf_new(MAX_PRIVKEY_SIZE);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
253 ret = buf_readfile(buf, filename);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
254
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
255 if (ret != DROPBEAR_SUCCESS) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
256 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
257 goto out;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
258 }
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
259
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
260 key = new_sign_key();
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
261 keytype = DROPBEAR_SIGNKEY_ANY;
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_setpos(buf, 0);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
264 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
265 if (ret == DROPBEAR_FAILURE) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
266 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
267 goto out;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
268 }
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 printpubkey(key, keytype);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
271
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
272 err = DROPBEAR_SUCCESS;
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 out:
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
275 buf_burn(buf);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
276 buf_free(buf);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
277 buf = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
278 sign_key_free(key);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
279 key = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
280 exit(err);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
281 }
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 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
284
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
285 buffer * buf = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
286 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
287 unsigned long base64len;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
288 int err;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
289 const char * typestring = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
290 char *fp = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
291 int len;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
292
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
293 buf = buf_new(MAX_PUBKEY_SIZE);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
294 buf_put_pub_key(buf, key, keytype);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
295 buf_setpos(buf, 4);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
296
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
297 len = buf->len - buf->pos;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
298
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
299 base64len = sizeof(base64key);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
300 err = base64_encode(buf_getptr(buf, len), len, base64key, &base64len);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
301
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
302 if (err != CRYPT_OK) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
303 fprintf(stderr, "base64 failed");
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
304 }
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
305
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
306 typestring = signkey_name_from_type(keytype, &err);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
307
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
308 fp = sign_key_fingerprint(buf_getptr(buf, len), len);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
309
0bf5cebe622c Dropbearkey can now print out pubkey portions
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310 printf("Public key portion is:\n%s %s\nFingerprint: %s\n",
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311 typestring, base64key, fp);
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312
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313 m_free(fp);
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314 buf_free(buf);
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315 }
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316
4
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317 /* Write a buffer to a file specified, failing if the file exists */
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318 static void buf_writefile(buffer * buf, const char * filename) {
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319
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320 int fd;
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321 int len;
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322
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323 fd = open(filename, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
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324 if (fd < 0) {
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325 fprintf(stderr, "Couldn't create new file %s\n", filename);
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326 perror("Reason");
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327 buf_burn(buf);
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328 exit(EXIT_FAILURE);
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329 }
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330
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331 /* write the file now */
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332 while (buf->pos != buf->len) {
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333 len = write(fd, buf_getptr(buf, buf->len - buf->pos),
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334 buf->len - buf->pos);
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335 if (errno == EINTR) {
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336 continue;
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337 }
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338 if (len <= 0) {
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339 fprintf(stderr, "Failed writing file '%s'\n",filename);
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340 perror("Reason");
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341 exit(EXIT_FAILURE);
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342 }
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343 buf_incrpos(buf, len);
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344 }
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345
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346 close(fd);
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347 }