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annotate signkey.h @ 1787:ce3ce75a6e04

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Fix null pointer dereference removing listeners
author Matt Johnston <matt@ucc.asn.au>
date Mon, 07 Dec 2020 20:03:24 +0800
parents d5cdc60db08e
children 35d504d59c05
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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 #ifndef DROPBEAR_SIGNKEY_H_
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26 #define DROPBEAR_SIGNKEY_H_
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27
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28 #include "buffer.h"
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29
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30 /* Forward declarations */
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31 struct dropbear_DSS_Key;
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32 struct dropbear_RSA_Key;
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33 struct dropbear_ED25519_Key;
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34
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35 /* Must match with signature_type below */
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36 enum signkey_type {
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37 #if DROPBEAR_RSA
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38 DROPBEAR_SIGNKEY_RSA,
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39 #endif
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40 #if DROPBEAR_DSS
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41 DROPBEAR_SIGNKEY_DSS,
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42 #endif
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43 #if DROPBEAR_ECDSA
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44 DROPBEAR_SIGNKEY_ECDSA_NISTP256,
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45 DROPBEAR_SIGNKEY_ECDSA_NISTP384,
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46 DROPBEAR_SIGNKEY_ECDSA_NISTP521,
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47 #endif /* DROPBEAR_ECDSA */
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48 #if DROPBEAR_ED25519
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49 DROPBEAR_SIGNKEY_ED25519,
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50 #endif
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51 DROPBEAR_SIGNKEY_NUM_NAMED,
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52 DROPBEAR_SIGNKEY_ECDSA_KEYGEN = 70, /* just "ecdsa" for keygen */
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53 DROPBEAR_SIGNKEY_ANY = 80,
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54 DROPBEAR_SIGNKEY_NONE = 90,
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55 };
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56
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57 /* Must match with signkey_type above, apart from rsa */
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58 enum signature_type {
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59 #if DROPBEAR_DSS
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60 DROPBEAR_SIGNATURE_DSS = DROPBEAR_SIGNKEY_DSS,
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61 #endif
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62 #if DROPBEAR_ECDSA
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63 DROPBEAR_SIGNATURE_ECDSA_NISTP256 = DROPBEAR_SIGNKEY_ECDSA_NISTP256,
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64 DROPBEAR_SIGNATURE_ECDSA_NISTP384 = DROPBEAR_SIGNKEY_ECDSA_NISTP384,
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65 DROPBEAR_SIGNATURE_ECDSA_NISTP521 = DROPBEAR_SIGNKEY_ECDSA_NISTP521,
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66 #endif /* DROPBEAR_ECDSA */
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67 #if DROPBEAR_ED25519
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68 DROPBEAR_SIGNATURE_ED25519 = DROPBEAR_SIGNKEY_ED25519,
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69 #endif
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70 #if DROPBEAR_RSA_SHA1
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71 DROPBEAR_SIGNATURE_RSA_SHA1 = 100, /* ssh-rsa signature (sha1) */
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72 #endif
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73 #if DROPBEAR_RSA_SHA256
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74 DROPBEAR_SIGNATURE_RSA_SHA256 = 101, /* rsa-sha2-256 signature. has a ssh-rsa key */
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75 #endif
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76 DROPBEAR_SIGNATURE_NONE = DROPBEAR_SIGNKEY_NONE,
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77 };
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78
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79
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80 /* Sources for signing keys */
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81 typedef enum {
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82 SIGNKEY_SOURCE_RAW_FILE,
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83 SIGNKEY_SOURCE_AGENT,
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84 SIGNKEY_SOURCE_INVALID,
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85 } signkey_source;
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86
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87 struct SIGN_key {
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88
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89 enum signkey_type type;
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90 signkey_source source;
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91 char *filename;
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92
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93 #if DROPBEAR_DSS
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94 struct dropbear_DSS_Key * dsskey;
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95 #endif
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96 #if DROPBEAR_RSA
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97 struct dropbear_RSA_Key * rsakey;
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98 #endif
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99 #if DROPBEAR_ECDSA
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100 #if DROPBEAR_ECC_256
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101 ecc_key * ecckey256;
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102 #endif
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103 #if DROPBEAR_ECC_384
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104 ecc_key * ecckey384;
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105 #endif
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106 #if DROPBEAR_ECC_521
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107 ecc_key * ecckey521;
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108 #endif
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109 #endif
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110 #if DROPBEAR_ED25519
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111 struct dropbear_ED25519_Key * ed25519key;
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112 #endif
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113 };
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114
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115 typedef struct SIGN_key sign_key;
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116
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117 sign_key * new_sign_key(void);
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118 const char* signkey_name_from_type(enum signkey_type type, unsigned int *namelen);
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119 enum signkey_type signkey_type_from_name(const char* name, unsigned int namelen);
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120 const char* signature_name_from_type(enum signature_type type, unsigned int *namelen);
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121 enum signature_type signature_type_from_name(const char* name, unsigned int namelen);
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122 enum signkey_type signkey_type_from_signature(enum signature_type sigtype);
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123 enum signature_type signature_type_from_signkey(enum signkey_type keytype);
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124
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125 int buf_get_pub_key(buffer *buf, sign_key *key, enum signkey_type *type);
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126 int buf_get_priv_key(buffer* buf, sign_key *key, enum signkey_type *type);
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127 void buf_put_pub_key(buffer* buf, sign_key *key, enum signkey_type type);
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128 void buf_put_priv_key(buffer* buf, sign_key *key, enum signkey_type type);
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129 void sign_key_free(sign_key *key);
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130 void buf_put_sign(buffer* buf, sign_key *key, enum signature_type sigtype, const buffer *data_buf);
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131 #if DROPBEAR_SIGNKEY_VERIFY
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132 int buf_verify(buffer * buf, sign_key *key, enum signature_type expect_sigtype, const buffer *data_buf);
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Francois Perrad <francois.perrad@gadz.org>
parents: 1295
diff changeset
133 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
134 #endif
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 44
diff changeset
135 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
136 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: 1295
diff changeset
137 const buffer * line, char ** fingerprint);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
138
841
d4ce5269a439 Fix specifying a keysize for key generation, fix key name arguments
Matt Johnston <matt@ucc.asn.au>
parents: 807
diff changeset
139 void** signkey_key_ptr(sign_key *key, enum signkey_type type);
795
7f604f9b3756 ecdsa is working
Matt Johnston <matt@ucc.asn.au>
parents: 794
diff changeset
140
1036
deed0571cacc DROPBEAR_ prefix for include guards to avoid collisions
Thorsten Horstmann <thorsten.horstmann@web.de>
parents: 857
diff changeset
141 #endif /* DROPBEAR_SIGNKEY_H_ */