annotate signkey.c @ 1786:a3b39df57c8b

fuzz: add an always-failing dropbear_listen() replacement
author Matt Johnston <matt@ucc.asn.au>
date Sun, 06 Dec 2020 21:54:01 +0800
parents 064f5be2fc45
children fa6ff07dcc77
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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 #include "includes.h"
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26 #include "dbutil.h"
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27 #include "signkey.h"
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28 #include "buffer.h"
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29 #include "ssh.h"
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30 #include "ecdsa.h"
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31 #include "rsa.h"
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32 #include "dss.h"
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33 #include "ed25519.h"
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34
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35 static const char * const signkey_names[DROPBEAR_SIGNKEY_NUM_NAMED] = {
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36 #if DROPBEAR_RSA
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37 "ssh-rsa",
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38 #endif
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39 #if DROPBEAR_DSS
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40 "ssh-dss",
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41 #endif
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42 #if DROPBEAR_ECDSA
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43 "ecdsa-sha2-nistp256",
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44 "ecdsa-sha2-nistp384",
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45 "ecdsa-sha2-nistp521",
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46 #endif /* DROPBEAR_ECDSA */
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47 #if DROPBEAR_ED25519
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48 "ssh-ed25519",
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49 #endif /* DROPBEAR_ED25519 */
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50 /* "rsa-sha2-256" is special-cased below since it is only a signature name, not key type */
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51 };
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52
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53 /* malloc a new sign_key and set the dss and rsa keys to NULL */
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54 sign_key * new_sign_key() {
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55
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56 sign_key * ret;
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57
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58 ret = (sign_key*)m_malloc(sizeof(sign_key));
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59 ret->type = DROPBEAR_SIGNKEY_NONE;
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60 ret->source = SIGNKEY_SOURCE_INVALID;
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61 return ret;
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62 }
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63
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64 /* Returns key name corresponding to the type. Exits fatally
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65 * if the type is invalid */
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66 const char* signkey_name_from_type(enum signkey_type type, unsigned int *namelen) {
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67 if (type >= DROPBEAR_SIGNKEY_NUM_NAMED) {
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68 dropbear_exit("Bad key type %d", type);
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69 }
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71 if (namelen) {
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72 *namelen = strlen(signkey_names[type]);
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73 }
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74 return signkey_names[type];
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75 }
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76
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77 /* Returns DROPBEAR_SIGNKEY_NONE if none match */
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78 enum signkey_type signkey_type_from_name(const char* name, unsigned int namelen) {
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79 int i;
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80 for (i = 0; i < DROPBEAR_SIGNKEY_NUM_NAMED; i++) {
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81 const char *fixed_name = signkey_names[i];
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82 if (namelen == strlen(fixed_name)
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83 && memcmp(fixed_name, name, namelen) == 0) {
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84
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85 #if DROPBEAR_ECDSA
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86 /* Some of the ECDSA key sizes are defined even if they're not compiled in */
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87 if (0
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88 #if !DROPBEAR_ECC_256
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89 || i == DROPBEAR_SIGNKEY_ECDSA_NISTP256
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90 #endif
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91 #if !DROPBEAR_ECC_384
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92 || i == DROPBEAR_SIGNKEY_ECDSA_NISTP384
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93 #endif
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94 #if !DROPBEAR_ECC_521
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95 || i == DROPBEAR_SIGNKEY_ECDSA_NISTP521
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96 #endif
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97 ) {
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98 TRACE(("attempt to use ecdsa type %d not compiled in", i))
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99 return DROPBEAR_SIGNKEY_NONE;
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100 }
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101 #endif
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102
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103 return (enum signkey_type)i;
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104 }
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105 }
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106
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107 TRACE(("signkey_type_from_name unexpected key type."))
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108
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109 return DROPBEAR_SIGNKEY_NONE;
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110 }
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111
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112 /* Special case for rsa-sha2-256. This could be generalised if more
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113 signature names are added that aren't 1-1 with public key names */
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114 const char* signature_name_from_type(enum signature_type type, unsigned int *namelen) {
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115 #if DROPBEAR_RSA_SHA256
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116 if (type == DROPBEAR_SIGNATURE_RSA_SHA256) {
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117 if (namelen) {
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118 *namelen = strlen(SSH_SIGNATURE_RSA_SHA256);
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119 }
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120 return SSH_SIGNATURE_RSA_SHA256;
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121 }
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122 #endif
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123 #if DROPBEAR_RSA_SHA1
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124 if (type == DROPBEAR_SIGNATURE_RSA_SHA1) {
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125 if (namelen) {
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126 *namelen = strlen(SSH_SIGNKEY_RSA);
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127 }
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128 return SSH_SIGNKEY_RSA;
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129 }
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130 #endif
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131 return signkey_name_from_type((enum signkey_type)type, namelen);
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132 }
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133
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134 /* Returns DROPBEAR_SIGNATURE_NONE if none match */
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135 enum signature_type signature_type_from_name(const char* name, unsigned int namelen) {
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136 #if DROPBEAR_RSA_SHA256
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137 if (namelen == strlen(SSH_SIGNATURE_RSA_SHA256)
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138 && memcmp(name, SSH_SIGNATURE_RSA_SHA256, namelen) == 0) {
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139 return DROPBEAR_SIGNATURE_RSA_SHA256;
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140 }
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diff changeset
141 #endif
1681
435cfb9ec96e send and handle SSH_MSG_EXT_INFO only at the correct point
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diff changeset
142 #if DROPBEAR_RSA_SHA1
1675
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diff changeset
143 if (namelen == strlen(SSH_SIGNKEY_RSA)
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144 && memcmp(name, SSH_SIGNKEY_RSA, namelen) == 0) {
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145 return DROPBEAR_SIGNATURE_RSA_SHA1;
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diff changeset
146 }
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diff changeset
147 #endif
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148 return (enum signature_type)signkey_type_from_name(name, namelen);
1674
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149 }
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diff changeset
150
1676
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diff changeset
151 /* Returns the signature type from a key type. Must not be called
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diff changeset
152 with RSA keytype */
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diff changeset
153 enum signature_type signature_type_from_signkey(enum signkey_type keytype) {
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diff changeset
154 #if DROPBEAR_RSA
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diff changeset
155 assert(keytype != DROPBEAR_SIGNKEY_RSA);
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diff changeset
156 #endif
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diff changeset
157 assert(keytype < DROPBEAR_SIGNKEY_NUM_NAMED);
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diff changeset
158 return (enum signature_type)keytype;
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diff changeset
159 }
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diff changeset
160
1675
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diff changeset
161 enum signkey_type signkey_type_from_signature(enum signature_type sigtype) {
1674
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diff changeset
162 #if DROPBEAR_RSA_SHA256
1675
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diff changeset
163 if (sigtype == DROPBEAR_SIGNATURE_RSA_SHA256) {
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diff changeset
164 return DROPBEAR_SIGNKEY_RSA;
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165 }
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diff changeset
166 #endif
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diff changeset
167 #if DROPBEAR_RSA_SHA1
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diff changeset
168 if (sigtype == DROPBEAR_SIGNATURE_RSA_SHA1) {
1674
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diff changeset
169 return DROPBEAR_SIGNKEY_RSA;
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170 }
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diff changeset
171 #endif
1684
d5d25ce2a2ed cast to fix warning
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diff changeset
172 assert((int)sigtype < (int)DROPBEAR_SIGNKEY_NUM_NAMED);
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diff changeset
173 return (enum signkey_type)sigtype;
1674
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diff changeset
174 }
ba6fc7afe1c5 use sigtype where appropriate
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diff changeset
175
1423
c1c3d5943bfc Fix null pointer dereference found by libfuzzer
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parents: 1409
diff changeset
176 /* Returns a pointer to the key part specific to "type".
c1c3d5943bfc Fix null pointer dereference found by libfuzzer
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parents: 1409
diff changeset
177 Be sure to check both (ret != NULL) and (*ret != NULL) */
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
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diff changeset
178 void **
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diff changeset
179 signkey_key_ptr(sign_key *key, enum signkey_type type) {
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parents: 807
diff changeset
180 switch (type) {
1659
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Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
181 #if DROPBEAR_ED25519
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
182 case DROPBEAR_SIGNKEY_ED25519:
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
183 return (void**)&key->ed25519key;
d32bcb5c557d Add Ed25519 support (#91)
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parents: 1558
diff changeset
184 #endif
1295
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diff changeset
185 #if DROPBEAR_ECDSA
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diff changeset
186 #if DROPBEAR_ECC_256
807
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diff changeset
187 case DROPBEAR_SIGNKEY_ECDSA_NISTP256:
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
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parents: 807
diff changeset
188 return (void**)&key->ecckey256;
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
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parents: 807
diff changeset
189 #endif
1295
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diff changeset
190 #if DROPBEAR_ECC_384
807
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parents: 801
diff changeset
191 case DROPBEAR_SIGNKEY_ECDSA_NISTP384:
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
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parents: 807
diff changeset
192 return (void**)&key->ecckey384;
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parents: 807
diff changeset
193 #endif
1295
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diff changeset
194 #if DROPBEAR_ECC_521
807
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parents: 801
diff changeset
195 case DROPBEAR_SIGNKEY_ECDSA_NISTP521:
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
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parents: 807
diff changeset
196 return (void**)&key->ecckey521;
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parents: 807
diff changeset
197 #endif
935
25692c60479e Fix compiling with ECDSA and DSS disabled
Matt Johnston <matt@ucc.asn.au>
parents: 864
diff changeset
198 #endif /* DROPBEAR_ECDSA */
1295
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diff changeset
199 #if DROPBEAR_RSA
841
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diff changeset
200 case DROPBEAR_SIGNKEY_RSA:
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parents: 807
diff changeset
201 return (void**)&key->rsakey;
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parents: 807
diff changeset
202 #endif
1295
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diff changeset
203 #if DROPBEAR_DSS
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
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diff changeset
204 case DROPBEAR_SIGNKEY_DSS:
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
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parents: 807
diff changeset
205 return (void**)&key->dsskey;
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parents: 807
diff changeset
206 #endif
807
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diff changeset
207 default:
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diff changeset
208 return NULL;
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parents: 801
diff changeset
209 }
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diff changeset
210 }
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diff changeset
211
4
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parents:
diff changeset
212 /* returns DROPBEAR_SUCCESS on success, DROPBEAR_FAILURE on fail.
26
0969767bca0d snapshot of stuff
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parents: 4
diff changeset
213 * type should be set by the caller to specify the type to read, and
0969767bca0d snapshot of stuff
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parents: 4
diff changeset
214 * on return is set to the type read (useful when type = _ANY) */
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
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parents: 807
diff changeset
215 int buf_get_pub_key(buffer *buf, sign_key *key, enum signkey_type *type) {
4
fe6bca95afa7 Makefile.in contains updated files required
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parents:
diff changeset
216
1094
c45d65392c1a Fix pointer differ in signess warnings [-Werror=pointer-sign]
Gaël PORTAY <gael.portay@gmail.com>
parents: 1058
diff changeset
217 char *ident;
4
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parents:
diff changeset
218 unsigned int len;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents: 935
diff changeset
219 enum signkey_type keytype;
44
45edf30ea0a6 Improved signkey code
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parents: 40
diff changeset
220 int ret = DROPBEAR_FAILURE;
4
fe6bca95afa7 Makefile.in contains updated files required
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parents:
diff changeset
221
731
9a5438271556 Move the more verbose TRACE() statements into TRACE2()
Matt Johnston <matt@ucc.asn.au>
parents: 651
diff changeset
222 TRACE2(("enter buf_get_pub_key"))
34
e2a1eaa19f22 Client mostly works up to password auth
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
223
1122
aaf576b27a10 Merge pull request #13 from gazoo74/fix-warnings
Matt Johnston <matt@ucc.asn.au>
parents: 1094
diff changeset
224 ident = buf_getstring(buf, &len);
44
45edf30ea0a6 Improved signkey code
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parents: 40
diff changeset
225 keytype = signkey_type_from_name(ident, len);
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
226 m_free(ident);
4
fe6bca95afa7 Makefile.in contains updated files required
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parents:
diff changeset
227
44
45edf30ea0a6 Improved signkey code
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parents: 40
diff changeset
228 if (*type != DROPBEAR_SIGNKEY_ANY && *type != keytype) {
651
a48a1f6ab43e - Fix some format strings in TRACE()s
Matt Johnston <matt@ucc.asn.au>
parents: 594
diff changeset
229 TRACE(("buf_get_pub_key bad type - got %d, expected %d", keytype, *type))
44
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
230 return DROPBEAR_FAILURE;
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
231 }
551
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents: 436
diff changeset
232
731
9a5438271556 Move the more verbose TRACE() statements into TRACE2()
Matt Johnston <matt@ucc.asn.au>
parents: 651
diff changeset
233 TRACE2(("buf_get_pub_key keytype is %d", keytype))
44
45edf30ea0a6 Improved signkey code
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parents: 40
diff changeset
234
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
235 *type = keytype;
45edf30ea0a6 Improved signkey code
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parents: 40
diff changeset
236
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
237 /* Rewind the buffer back before "ssh-rsa" etc */
1754
064f5be2fc45 Add buf_decrpos()
Matt Johnston <matt@ucc.asn.au>
parents: 1684
diff changeset
238 buf_decrpos(buf, len + 4);
34
e2a1eaa19f22 Client mostly works up to password auth
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parents: 26
diff changeset
239
1295
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parents: 1278
diff changeset
240 #if DROPBEAR_DSS
44
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
241 if (keytype == DROPBEAR_SIGNKEY_DSS) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242 dss_key_free(key->dsskey);
586
b50f0107e505 Rename rsa_key to dropbear_rsa_key (and same for dss too) so
Matt Johnston <matt@ucc.asn.au>
parents: 560
diff changeset
243 key->dsskey = m_malloc(sizeof(*key->dsskey));
44
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
244 ret = buf_get_dss_pub_key(buf, key->dsskey);
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
245 if (ret == DROPBEAR_FAILURE) {
1409
c721e8c42d2a add m_mp_free_multi, be more careful freeing when failing to load keys
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
246 dss_key_free(key->dsskey);
c721e8c42d2a add m_mp_free_multi, be more careful freeing when failing to load keys
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
247 key->dsskey = NULL;
44
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
248 }
4
fe6bca95afa7 Makefile.in contains updated files required
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parents:
diff changeset
249 }
fe6bca95afa7 Makefile.in contains updated files required
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parents:
diff changeset
250 #endif
1295
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Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
251 #if DROPBEAR_RSA
44
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
252 if (keytype == DROPBEAR_SIGNKEY_RSA) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
253 rsa_key_free(key->rsakey);
586
b50f0107e505 Rename rsa_key to dropbear_rsa_key (and same for dss too) so
Matt Johnston <matt@ucc.asn.au>
parents: 560
diff changeset
254 key->rsakey = m_malloc(sizeof(*key->rsakey));
44
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
255 ret = buf_get_rsa_pub_key(buf, key->rsakey);
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
256 if (ret == DROPBEAR_FAILURE) {
1409
c721e8c42d2a add m_mp_free_multi, be more careful freeing when failing to load keys
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
257 rsa_key_free(key->rsakey);
c721e8c42d2a add m_mp_free_multi, be more careful freeing when failing to load keys
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
258 key->rsakey = NULL;
44
45edf30ea0a6 Improved signkey code
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
259 }
4
fe6bca95afa7 Makefile.in contains updated files required
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parents:
diff changeset
260 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
261 #endif
1295
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Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
262 #if DROPBEAR_ECDSA
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
263 if (signkey_is_ecdsa(keytype)) {
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 807
diff changeset
264 ecc_key **eck = (ecc_key**)signkey_key_ptr(key, keytype);
807
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parents: 801
diff changeset
265 if (eck) {
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parents: 801
diff changeset
266 if (*eck) {
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
267 ecc_free(*eck);
1058
063c38ea622b Fix some memory leaks in ecc code
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
268 m_free(*eck);
807
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diff changeset
269 *eck = NULL;
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parents: 801
diff changeset
270 }
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parents: 801
diff changeset
271 *eck = buf_get_ecdsa_pub_key(buf);
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parents: 801
diff changeset
272 if (*eck) {
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parents: 801
diff changeset
273 ret = DROPBEAR_SUCCESS;
75509065db53 have separate ecdsa keys for each size
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parents: 801
diff changeset
274 }
794
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
275 }
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
276 }
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
277 #endif
1659
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278 #if DROPBEAR_ED25519
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279 if (keytype == DROPBEAR_SIGNKEY_ED25519) {
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280 ed25519_key_free(key->ed25519key);
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281 key->ed25519key = m_malloc(sizeof(*key->ed25519key));
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282 ret = buf_get_ed25519_pub_key(buf, key->ed25519key);
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diff changeset
283 if (ret == DROPBEAR_FAILURE) {
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diff changeset
284 m_free(key->ed25519key);
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diff changeset
285 key->ed25519key = NULL;
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286 }
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287 }
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diff changeset
288 #endif
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289
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290 TRACE2(("leave buf_get_pub_key"))
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291
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292 return ret;
4
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293 }
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294
44
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295 /* returns DROPBEAR_SUCCESS on success, DROPBEAR_FAILURE on fail.
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diff changeset
296 * type should be set by the caller to specify the type to read, and
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diff changeset
297 * on return is set to the type read (useful when type = _ANY) */
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298 int buf_get_priv_key(buffer *buf, sign_key *key, enum signkey_type *type) {
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299
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c45d65392c1a Fix pointer differ in signess warnings [-Werror=pointer-sign]
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300 char *ident;
4
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301 unsigned int len;
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diff changeset
302 enum signkey_type keytype;
44
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303 int ret = DROPBEAR_FAILURE;
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304
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305 TRACE2(("enter buf_get_priv_key"))
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306
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aaf576b27a10 Merge pull request #13 from gazoo74/fix-warnings
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307 ident = buf_getstring(buf, &len);
44
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308 keytype = signkey_type_from_name(ident, len);
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diff changeset
309 m_free(ident);
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310
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diff changeset
311 if (*type != DROPBEAR_SIGNKEY_ANY && *type != keytype) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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312 TRACE(("wrong key type: %d %d", *type, keytype))
44
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diff changeset
313 return DROPBEAR_FAILURE;
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314 }
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315
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316 *type = keytype;
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317
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318 /* Rewind the buffer back before "ssh-rsa" etc */
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319 buf_decrpos(buf, len + 4);
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320
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321 #if DROPBEAR_DSS
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322 if (keytype == DROPBEAR_SIGNKEY_DSS) {
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323 dss_key_free(key->dsskey);
586
b50f0107e505 Rename rsa_key to dropbear_rsa_key (and same for dss too) so
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diff changeset
324 key->dsskey = m_malloc(sizeof(*key->dsskey));
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325 ret = buf_get_dss_priv_key(buf, key->dsskey);
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326 if (ret == DROPBEAR_FAILURE) {
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327 dss_key_free(key->dsskey);
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328 key->dsskey = NULL;
4
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329 }
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330 }
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331 #endif
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diff changeset
332 #if DROPBEAR_RSA
44
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333 if (keytype == DROPBEAR_SIGNKEY_RSA) {
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334 rsa_key_free(key->rsakey);
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diff changeset
335 key->rsakey = m_malloc(sizeof(*key->rsakey));
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336 ret = buf_get_rsa_priv_key(buf, key->rsakey);
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337 if (ret == DROPBEAR_FAILURE) {
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338 rsa_key_free(key->rsakey);
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339 key->rsakey = NULL;
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340 }
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341 }
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342 #endif
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343 #if DROPBEAR_ECDSA
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344 if (signkey_is_ecdsa(keytype)) {
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diff changeset
345 ecc_key **eck = (ecc_key**)signkey_key_ptr(key, keytype);
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346 if (eck) {
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diff changeset
347 if (*eck) {
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diff changeset
348 ecc_free(*eck);
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349 m_free(*eck);
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350 *eck = NULL;
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diff changeset
351 }
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352 *eck = buf_get_ecdsa_priv_key(buf);
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353 if (*eck) {
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354 ret = DROPBEAR_SUCCESS;
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355 }
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356 }
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357 }
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diff changeset
358 #endif
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diff changeset
359 #if DROPBEAR_ED25519
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diff changeset
360 if (keytype == DROPBEAR_SIGNKEY_ED25519) {
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diff changeset
361 ed25519_key_free(key->ed25519key);
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362 key->ed25519key = m_malloc(sizeof(*key->ed25519key));
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diff changeset
363 ret = buf_get_ed25519_priv_key(buf, key->ed25519key);
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diff changeset
364 if (ret == DROPBEAR_FAILURE) {
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diff changeset
365 m_free(key->ed25519key);
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diff changeset
366 key->ed25519key = NULL;
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diff changeset
367 }
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diff changeset
368 }
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diff changeset
369 #endif
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370
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371 TRACE2(("leave buf_get_priv_key"))
44
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diff changeset
372
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diff changeset
373 return ret;
4
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374
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375 }
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376
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diff changeset
377 /* type is either DROPBEAR_SIGNKEY_DSS or DROPBEAR_SIGNKEY_RSA */
841
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parents: 807
diff changeset
378 void buf_put_pub_key(buffer* buf, sign_key *key, enum signkey_type type) {
4
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379
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diff changeset
380 buffer *pubkeys;
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381
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diff changeset
382 TRACE2(("enter buf_put_pub_key"))
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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parents: 51
diff changeset
383 pubkeys = buf_new(MAX_PUBKEY_SIZE);
4
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diff changeset
384
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diff changeset
385 #if DROPBEAR_DSS
4
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386 if (type == DROPBEAR_SIGNKEY_DSS) {
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diff changeset
387 buf_put_dss_pub_key(pubkeys, key->dsskey);
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diff changeset
388 }
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diff changeset
389 #endif
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diff changeset
390 #if DROPBEAR_RSA
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391 if (type == DROPBEAR_SIGNKEY_RSA) {
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392 buf_put_rsa_pub_key(pubkeys, key->rsakey);
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diff changeset
393 }
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diff changeset
394 #endif
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diff changeset
395 #if DROPBEAR_ECDSA
846
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parents: 841
diff changeset
396 if (signkey_is_ecdsa(type)) {
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
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parents: 807
diff changeset
397 ecc_key **eck = (ecc_key**)signkey_key_ptr(key, type);
1423
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parents: 1409
diff changeset
398 if (eck && *eck) {
807
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diff changeset
399 buf_put_ecdsa_pub_key(pubkeys, *eck);
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parents: 801
diff changeset
400 }
794
d386defb5376 more ecdsa signkey work, not correct
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diff changeset
401 }
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parents: 793
diff changeset
402 #endif
1659
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diff changeset
403 #if DROPBEAR_ED25519
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diff changeset
404 if (type == DROPBEAR_SIGNKEY_ED25519) {
d32bcb5c557d Add Ed25519 support (#91)
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parents: 1558
diff changeset
405 buf_put_ed25519_pub_key(pubkeys, key->ed25519key);
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
406 }
d32bcb5c557d Add Ed25519 support (#91)
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parents: 1558
diff changeset
407 #endif
4
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diff changeset
408 if (pubkeys->len == 0) {
594
a98a2138364a Improve capitalisation for all logged strings
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parents: 586
diff changeset
409 dropbear_exit("Bad key types in buf_put_pub_key");
4
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parents:
diff changeset
410 }
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diff changeset
411
760
f336d232fc63 Make _sign and _verify functions take a buffer* rather than void* and int
Matt Johnston <matt@ucc.asn.au>
parents: 651
diff changeset
412 buf_putbufstring(buf, pubkeys);
4
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diff changeset
413 buf_free(pubkeys);
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diff changeset
414 TRACE2(("leave buf_put_pub_key"))
4
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diff changeset
415 }
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diff changeset
416
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parents:
diff changeset
417 /* type is either DROPBEAR_SIGNKEY_DSS or DROPBEAR_SIGNKEY_RSA */
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 807
diff changeset
418 void buf_put_priv_key(buffer* buf, sign_key *key, enum signkey_type type) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
419
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
420 TRACE(("enter buf_put_priv_key"))
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
421 TRACE(("type is %d", type))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
422
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
423 #if DROPBEAR_DSS
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
424 if (type == DROPBEAR_SIGNKEY_DSS) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
425 buf_put_dss_priv_key(buf, key->dsskey);
1249
c6346c63281b refactor indentation with hard tab
Francois Perrad <francois.perrad@gadz.org>
parents: 1122
diff changeset
426 TRACE(("leave buf_put_priv_key: dss done"))
c6346c63281b refactor indentation with hard tab
Francois Perrad <francois.perrad@gadz.org>
parents: 1122
diff changeset
427 return;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
428 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
429 #endif
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
430 #if DROPBEAR_RSA
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
431 if (type == DROPBEAR_SIGNKEY_RSA) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
432 buf_put_rsa_priv_key(buf, key->rsakey);
1249
c6346c63281b refactor indentation with hard tab
Francois Perrad <francois.perrad@gadz.org>
parents: 1122
diff changeset
433 TRACE(("leave buf_put_priv_key: rsa done"))
c6346c63281b refactor indentation with hard tab
Francois Perrad <francois.perrad@gadz.org>
parents: 1122
diff changeset
434 return;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
435 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
436 #endif
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
437 #if DROPBEAR_ECDSA
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 841
diff changeset
438 if (signkey_is_ecdsa(type)) {
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 807
diff changeset
439 ecc_key **eck = (ecc_key**)signkey_key_ptr(key, type);
1423
c1c3d5943bfc Fix null pointer dereference found by libfuzzer
Matt Johnston <matt@ucc.asn.au>
parents: 1409
diff changeset
440 if (eck && *eck) {
807
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
441 buf_put_ecdsa_priv_key(buf, *eck);
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
442 TRACE(("leave buf_put_priv_key: ecdsa done"))
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
443 return;
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
444 }
794
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
445 }
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
446 #endif
1659
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
447 #if DROPBEAR_ED25519
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
448 if (type == DROPBEAR_SIGNKEY_ED25519) {
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
449 buf_put_ed25519_priv_key(buf, key->ed25519key);
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
450 TRACE(("leave buf_put_priv_key: ed25519 done"))
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
451 return;
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
452 }
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
453 #endif
594
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 586
diff changeset
454 dropbear_exit("Bad key types in put pub key");
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
455 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
456
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
457 void sign_key_free(sign_key *key) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
458
731
9a5438271556 Move the more verbose TRACE() statements into TRACE2()
Matt Johnston <matt@ucc.asn.au>
parents: 651
diff changeset
459 TRACE2(("enter sign_key_free"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
460
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
461 #if DROPBEAR_DSS
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
462 dss_key_free(key->dsskey);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
463 key->dsskey = NULL;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
464 #endif
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
465 #if DROPBEAR_RSA
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
466 rsa_key_free(key->rsakey);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
467 key->rsakey = NULL;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
468 #endif
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
469 #if DROPBEAR_ECDSA
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
470 #if DROPBEAR_ECC_256
807
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
471 if (key->ecckey256) {
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
472 ecc_free(key->ecckey256);
1058
063c38ea622b Fix some memory leaks in ecc code
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
473 m_free(key->ecckey256);
807
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
474 key->ecckey256 = NULL;
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
475 }
847
f4bb964c8678 Add '-R' for delayed hostkey option
Matt Johnston <matt@ucc.asn.au>
parents: 846
diff changeset
476 #endif
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
477 #if DROPBEAR_ECC_384
807
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
478 if (key->ecckey384) {
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
479 ecc_free(key->ecckey384);
1058
063c38ea622b Fix some memory leaks in ecc code
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
480 m_free(key->ecckey384);
807
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
481 key->ecckey384 = NULL;
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
482 }
847
f4bb964c8678 Add '-R' for delayed hostkey option
Matt Johnston <matt@ucc.asn.au>
parents: 846
diff changeset
483 #endif
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
484 #if DROPBEAR_ECC_521
807
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
485 if (key->ecckey521) {
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
486 ecc_free(key->ecckey521);
1058
063c38ea622b Fix some memory leaks in ecc code
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
487 m_free(key->ecckey521);
807
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
488 key->ecckey521 = NULL;
794
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
489 }
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
490 #endif
847
f4bb964c8678 Add '-R' for delayed hostkey option
Matt Johnston <matt@ucc.asn.au>
parents: 846
diff changeset
491 #endif
1659
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
492 #if DROPBEAR_ED25519
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
493 ed25519_key_free(key->ed25519key);
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
494 key->ed25519key = NULL;
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
495 #endif
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
496
551
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents: 436
diff changeset
497 m_free(key->filename);
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents: 436
diff changeset
498
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
499 m_free(key);
731
9a5438271556 Move the more verbose TRACE() statements into TRACE2()
Matt Johnston <matt@ucc.asn.au>
parents: 651
diff changeset
500 TRACE2(("leave sign_key_free"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
501 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
502
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
503 static char hexdig(unsigned char x) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
504 if (x > 0xf)
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
505 return 'X';
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
506
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
507 if (x < 10)
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
508 return '0' + x;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
509 else
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
510 return 'a' + x - 10;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
511 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
512
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
513 /* Since we're not sure if we'll have md5 or sha1, we present both.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
514 * MD5 is used in preference, but sha1 could still be useful */
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
515 #if DROPBEAR_MD5_HMAC
1459
06d52bcb8094 Pointer parameter could be declared as pointing to const
Francois Perrad <francois.perrad@gadz.org>
parents: 1424
diff changeset
516 static char * sign_key_md5_fingerprint(const unsigned char* keyblob,
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
517 unsigned int keybloblen) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
518
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
519 char * ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
520 hash_state hs;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
521 unsigned char hash[MD5_HASH_SIZE];
214
5a75f8a21503 Change the format of for loops, gcc4 produces incorrect binaries with
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
522 unsigned int i;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
523 unsigned int buflen;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
524
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
525 md5_init(&hs);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
526
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
527 /* skip the size int of the string - this is a bit messy */
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
528 md5_process(&hs, keyblob, keybloblen);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
529
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
530 md5_done(&hs, hash);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
531
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
532 /* "md5 hexfingerprinthere\0", each hex digit is "AB:" etc */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
533 buflen = 4 + 3*MD5_HASH_SIZE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
534 ret = (char*)m_malloc(buflen);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
535
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
536 memset(ret, 'Z', buflen);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
537 strcpy(ret, "md5 ");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
538
214
5a75f8a21503 Change the format of for loops, gcc4 produces incorrect binaries with
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
539 for (i = 0; i < MD5_HASH_SIZE; i++) {
5a75f8a21503 Change the format of for loops, gcc4 produces incorrect binaries with
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
540 unsigned int pos = 4 + i*3;
5a75f8a21503 Change the format of for loops, gcc4 produces incorrect binaries with
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
541 ret[pos] = hexdig(hash[i] >> 4);
5a75f8a21503 Change the format of for loops, gcc4 produces incorrect binaries with
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
542 ret[pos+1] = hexdig(hash[i] & 0x0f);
5a75f8a21503 Change the format of for loops, gcc4 produces incorrect binaries with
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
543 ret[pos+2] = ':';
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
544 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
545 ret[buflen-1] = 0x0;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
546
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
547 return ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
548 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
549
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
550 #else /* use SHA1 rather than MD5 for fingerprint */
1459
06d52bcb8094 Pointer parameter could be declared as pointing to const
Francois Perrad <francois.perrad@gadz.org>
parents: 1424
diff changeset
551 static char * sign_key_sha1_fingerprint(const unsigned char* keyblob,
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
552 unsigned int keybloblen) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
553
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
554 char * ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
555 hash_state hs;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
556 unsigned char hash[SHA1_HASH_SIZE];
214
5a75f8a21503 Change the format of for loops, gcc4 produces incorrect binaries with
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
557 unsigned int i;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
558 unsigned int buflen;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
559
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
560 sha1_init(&hs);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
561
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
562 /* skip the size int of the string - this is a bit messy */
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
563 sha1_process(&hs, keyblob, keybloblen);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
564
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
565 sha1_done(&hs, hash);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
566
794
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
567 /* "sha1!! hexfingerprinthere\0", each hex digit is "AB:" etc */
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
568 buflen = 7 + 3*SHA1_HASH_SIZE;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
569 ret = (char*)m_malloc(buflen);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
570
794
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
571 strcpy(ret, "sha1!! ");
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
572
214
5a75f8a21503 Change the format of for loops, gcc4 produces incorrect binaries with
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
573 for (i = 0; i < SHA1_HASH_SIZE; i++) {
794
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
574 unsigned int pos = 7 + 3*i;
214
5a75f8a21503 Change the format of for loops, gcc4 produces incorrect binaries with
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
575 ret[pos] = hexdig(hash[i] >> 4);
5a75f8a21503 Change the format of for loops, gcc4 produces incorrect binaries with
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
576 ret[pos+1] = hexdig(hash[i] & 0x0f);
5a75f8a21503 Change the format of for loops, gcc4 produces incorrect binaries with
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
577 ret[pos+2] = ':';
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
578 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
579 ret[buflen-1] = 0x0;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
580
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
581 return ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
582 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
583
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
584 #endif /* MD5/SHA1 switch */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
585
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
586 /* This will return a freshly malloced string, containing a fingerprint
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
587 * in either sha1 or md5 */
1459
06d52bcb8094 Pointer parameter could be declared as pointing to const
Francois Perrad <francois.perrad@gadz.org>
parents: 1424
diff changeset
588 char * sign_key_fingerprint(const unsigned char* keyblob, unsigned int keybloblen) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
589
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
590 #if DROPBEAR_MD5_HMAC
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
591 return sign_key_md5_fingerprint(keyblob, keybloblen);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
592 #else
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
593 return sign_key_sha1_fingerprint(keyblob, keybloblen);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
594 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
595 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
596
1675
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
597 void buf_put_sign(buffer* buf, sign_key *key, enum signature_type sigtype,
1459
06d52bcb8094 Pointer parameter could be declared as pointing to const
Francois Perrad <francois.perrad@gadz.org>
parents: 1424
diff changeset
598 const buffer *data_buf) {
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
599 buffer *sigblob = buf_new(MAX_PUBKEY_SIZE);
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
600 enum signkey_type keytype = signkey_type_from_signature(sigtype);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
601
1675
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
602 #if DEBUG_TRACE
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
603 {
1676
d5cdc60db08e ext-info handling for server-sig-algs
Matt Johnston <matt@ucc.asn.au>
parents: 1675
diff changeset
604 const char* signame = signature_name_from_type(sigtype, NULL);
1675
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
605 TRACE(("buf_put_sign type %d %s", sigtype, signame));
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
606 }
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
607 #endif
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
608
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
609
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
610 #if DROPBEAR_DSS
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
611 if (keytype == DROPBEAR_SIGNKEY_DSS) {
760
f336d232fc63 Make _sign and _verify functions take a buffer* rather than void* and int
Matt Johnston <matt@ucc.asn.au>
parents: 651
diff changeset
612 buf_put_dss_sign(sigblob, key->dsskey, data_buf);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
613 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
614 #endif
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
615 #if DROPBEAR_RSA
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
616 if (keytype == DROPBEAR_SIGNKEY_RSA) {
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
617 buf_put_rsa_sign(sigblob, key->rsakey, sigtype, data_buf);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
618 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
619 #endif
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
620 #if DROPBEAR_ECDSA
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
621 if (signkey_is_ecdsa(keytype)) {
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
622 ecc_key **eck = (ecc_key**)signkey_key_ptr(key, keytype);
1423
c1c3d5943bfc Fix null pointer dereference found by libfuzzer
Matt Johnston <matt@ucc.asn.au>
parents: 1409
diff changeset
623 if (eck && *eck) {
807
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
624 buf_put_ecdsa_sign(sigblob, *eck, data_buf);
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
625 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
626 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
627 #endif
1659
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
628 #if DROPBEAR_ED25519
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
629 if (keytype == DROPBEAR_SIGNKEY_ED25519) {
1659
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
630 buf_put_ed25519_sign(sigblob, key->ed25519key, data_buf);
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
631 }
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
632 #endif
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
633 if (sigblob->len == 0) {
594
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 586
diff changeset
634 dropbear_exit("Non-matching signing type");
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
635 }
760
f336d232fc63 Make _sign and _verify functions take a buffer* rather than void* and int
Matt Johnston <matt@ucc.asn.au>
parents: 651
diff changeset
636 buf_putbufstring(buf, sigblob);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
637 buf_free(sigblob);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
638
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
639 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
640
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
641 #if DROPBEAR_SIGNKEY_VERIFY
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
642 /* Return DROPBEAR_SUCCESS or DROPBEAR_FAILURE.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
643 * If FAILURE is returned, the position of
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
644 * buf is undefined. If SUCCESS is returned, buf will be positioned after the
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
645 * signature blob */
1675
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
646 int buf_verify(buffer * buf, sign_key *key, enum signature_type expect_sigtype, const buffer *data_buf) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
647
1094
c45d65392c1a Fix pointer differ in signess warnings [-Werror=pointer-sign]
Gaël PORTAY <gael.portay@gmail.com>
parents: 1058
diff changeset
648 char *type_name = NULL;
794
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
649 unsigned int type_name_len = 0;
1675
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
650 enum signature_type sigtype;
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
651 enum signkey_type keytype;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
652
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
653 TRACE(("enter buf_verify"))
34
e2a1eaa19f22 Client mostly works up to password auth
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
654
864
30ab30e46452 Fix some warnings
Matt Johnston <matt@ucc.asn.au>
parents: 857
diff changeset
655 buf_getint(buf); /* blob length */
1122
aaf576b27a10 Merge pull request #13 from gazoo74/fix-warnings
Matt Johnston <matt@ucc.asn.au>
parents: 1094
diff changeset
656 type_name = buf_getstring(buf, &type_name_len);
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
657 sigtype = signature_type_from_name(type_name, type_name_len);
794
d386defb5376 more ecdsa signkey work, not correct
Matt Johnston <matt@ucc.asn.au>
parents: 793
diff changeset
658 m_free(type_name);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
659
1675
ae41624c2198 split signkey_type and signature_type for RSA sha1 vs sha256
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
660 if (expect_sigtype != sigtype) {
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
661 dropbear_exit("Non-matching signing type");
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
662 }
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
663
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
664 keytype = signkey_type_from_signature(sigtype);
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
665 #if DROPBEAR_DSS
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
666 if (keytype == DROPBEAR_SIGNKEY_DSS) {
244
eb7b9f2bb8e8 - add explicit check that correct keytype exists for pubkey verification
Matt Johnston <matt@ucc.asn.au>
parents: 214
diff changeset
667 if (key->dsskey == NULL) {
594
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 586
diff changeset
668 dropbear_exit("No DSS key to verify signature");
244
eb7b9f2bb8e8 - add explicit check that correct keytype exists for pubkey verification
Matt Johnston <matt@ucc.asn.au>
parents: 214
diff changeset
669 }
760
f336d232fc63 Make _sign and _verify functions take a buffer* rather than void* and int
Matt Johnston <matt@ucc.asn.au>
parents: 651
diff changeset
670 return buf_dss_verify(buf, key->dsskey, data_buf);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
671 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
672 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
673
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
674 #if DROPBEAR_RSA
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
675 if (keytype == DROPBEAR_SIGNKEY_RSA) {
244
eb7b9f2bb8e8 - add explicit check that correct keytype exists for pubkey verification
Matt Johnston <matt@ucc.asn.au>
parents: 214
diff changeset
676 if (key->rsakey == NULL) {
594
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 586
diff changeset
677 dropbear_exit("No RSA key to verify signature");
244
eb7b9f2bb8e8 - add explicit check that correct keytype exists for pubkey verification
Matt Johnston <matt@ucc.asn.au>
parents: 214
diff changeset
678 }
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
679 return buf_rsa_verify(buf, key->rsakey, sigtype, data_buf);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
680 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
681 #endif
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
682 #if DROPBEAR_ECDSA
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
683 if (signkey_is_ecdsa(keytype)) {
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
684 ecc_key **eck = (ecc_key**)signkey_key_ptr(key, keytype);
1424
8a4b8f026de6 fix null pointer crash
Matt Johnston <matt@ucc.asn.au>
parents: 1423
diff changeset
685 if (eck && *eck) {
807
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
686 return buf_ecdsa_verify(buf, *eck, data_buf);
75509065db53 have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
687 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
688 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
689 #endif
1659
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
690 #if DROPBEAR_ED25519
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
691 if (keytype == DROPBEAR_SIGNKEY_ED25519) {
1659
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
692 if (key->ed25519key == NULL) {
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
693 dropbear_exit("No Ed25519 key to verify signature");
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
694 }
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
695 return buf_ed25519_verify(buf, key->ed25519key, data_buf);
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
696 }
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
697 #endif
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
698
594
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 586
diff changeset
699 dropbear_exit("Non-matching signing type");
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
700 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
701 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
702 #endif /* DROPBEAR_SIGNKEY_VERIFY */
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
703
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1278
diff changeset
704 #if DROPBEAR_KEY_LINES /* ie we're using authorized_keys or known_hosts */
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
705
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
706 /* Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE when given a buffer containing
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
707 * a key, a key, and a type. The buffer is positioned at the start of the
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
708 * base64 data, and contains no trailing data */
436
7282370416a0 Improve known_hosts checking.
Matt Johnston <matt@ucc.asn.au>
parents: 244
diff changeset
709 /* If fingerprint is non-NULL, it will be set to a malloc()ed fingerprint
7282370416a0 Improve known_hosts checking.
Matt Johnston <matt@ucc.asn.au>
parents: 244
diff changeset
710 of the key if it is successfully decoded */
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
711 int cmp_base64_key(const unsigned char* keyblob, unsigned int keybloblen,
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
712 const unsigned char* algoname, unsigned int algolen,
1459
06d52bcb8094 Pointer parameter could be declared as pointing to const
Francois Perrad <francois.perrad@gadz.org>
parents: 1424
diff changeset
713 const buffer * line, char ** fingerprint) {
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
714
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
715 buffer * decodekey = NULL;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
716 int ret = DROPBEAR_FAILURE;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
717 unsigned int len, filealgolen;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
718 unsigned long decodekeylen;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
719 unsigned char* filealgo = NULL;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
720
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
721 /* now we have the actual data */
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
722 len = line->len - line->pos;
1371
bc9e2e148f58 avoid NULL argument to base64 decode
Matt Johnston <matt@ucc.asn.au>
parents: 1369
diff changeset
723 if (len == 0) {
bc9e2e148f58 avoid NULL argument to base64 decode
Matt Johnston <matt@ucc.asn.au>
parents: 1369
diff changeset
724 /* base64_decode doesn't like NULL argument */
bc9e2e148f58 avoid NULL argument to base64 decode
Matt Johnston <matt@ucc.asn.au>
parents: 1369
diff changeset
725 return DROPBEAR_FAILURE;
bc9e2e148f58 avoid NULL argument to base64 decode
Matt Johnston <matt@ucc.asn.au>
parents: 1369
diff changeset
726 }
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
727 decodekeylen = len * 2; /* big to be safe */
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
728 decodekey = buf_new(decodekeylen);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
729
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
730 if (base64_decode(buf_getptr(line, len), len,
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
731 buf_getwriteptr(decodekey, decodekey->size),
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
732 &decodekeylen) != CRYPT_OK) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
733 TRACE(("checkpubkey: base64 decode failed"))
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
734 goto out;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
735 }
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
736 TRACE(("checkpubkey: base64_decode success"))
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
737 buf_incrlen(decodekey, decodekeylen);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
738
436
7282370416a0 Improve known_hosts checking.
Matt Johnston <matt@ucc.asn.au>
parents: 244
diff changeset
739 if (fingerprint) {
7282370416a0 Improve known_hosts checking.
Matt Johnston <matt@ucc.asn.au>
parents: 244
diff changeset
740 *fingerprint = sign_key_fingerprint(buf_getptr(decodekey, decodekeylen),
7282370416a0 Improve known_hosts checking.
Matt Johnston <matt@ucc.asn.au>
parents: 244
diff changeset
741 decodekeylen);
7282370416a0 Improve known_hosts checking.
Matt Johnston <matt@ucc.asn.au>
parents: 244
diff changeset
742 }
7282370416a0 Improve known_hosts checking.
Matt Johnston <matt@ucc.asn.au>
parents: 244
diff changeset
743
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
744 /* compare the keys */
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
745 if ( ( decodekeylen != keybloblen )
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
746 || memcmp( buf_getptr(decodekey, decodekey->len),
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
747 keyblob, decodekey->len) != 0) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
748 TRACE(("checkpubkey: compare failed"))
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
749 goto out;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
750 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
751
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
752 /* ... and also check that the algo specified and the algo in the key
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
753 * itself match */
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
754 filealgolen = buf_getint(decodekey);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
755 filealgo = buf_getptr(decodekey, filealgolen);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
756 if (filealgolen != algolen || memcmp(filealgo, algoname, algolen) != 0) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
757 TRACE(("checkpubkey: algo match failed"))
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
758 goto out;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
759 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
760
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
761 /* All checks passed */
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
762 ret = DROPBEAR_SUCCESS;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
763
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
764 out:
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
765 buf_free(decodekey);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
766 decodekey = NULL;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
767 return ret;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
768 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
769 #endif
1369
ddfcadca3c4c fuzzer-pubkey
Matt Johnston <matt@ucc.asn.au>
parents: 1362
diff changeset
770
1558
2f64cb3d3007 - #if not #ifdef for DROPBEAR_FUZZ
Matt Johnston <matt@ucc.asn.au>
parents: 1511
diff changeset
771 #if DROPBEAR_FUZZ
1369
ddfcadca3c4c fuzzer-pubkey
Matt Johnston <matt@ucc.asn.au>
parents: 1362
diff changeset
772 const char * const * fuzz_signkey_names = signkey_names;
ddfcadca3c4c fuzzer-pubkey
Matt Johnston <matt@ucc.asn.au>
parents: 1362
diff changeset
773
ddfcadca3c4c fuzzer-pubkey
Matt Johnston <matt@ucc.asn.au>
parents: 1362
diff changeset
774 #endif