5 Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
7 Copyright (C) 1997 - 2001 Pekka Riikonen
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
24 /* The default SILC PKCS (Public Key Cryptosystem) object to represent
26 typedef struct SilcPKCSObjectStruct {
30 int (*init)(void *, uint32, SilcRng);
31 void (*clear_keys)(void *);
32 unsigned char *(*get_public_key)(void *, uint32 *);
33 unsigned char *(*get_private_key)(void *, uint32 *);
34 uint32 (*set_public_key)(void *, unsigned char *, uint32);
35 int (*set_private_key)(void *, unsigned char *, uint32);
36 uint32 (*context_len)();
37 uint32 (*data_context_len)();
38 int (*set_arg)(void *, void *, int, SilcInt);
39 int (*encrypt)(void *, unsigned char *, uint32,
40 unsigned char *, uint32 *);
41 int (*decrypt)(void *, unsigned char *, uint32,
42 unsigned char *, uint32 *);
43 int (*sign)(void *, unsigned char *, uint32,
44 unsigned char *, uint32 *);
45 int (*verify)(void *, unsigned char *, uint32,
46 unsigned char *, uint32);
49 /* The main SILC PKCS structure. Use SilcPKCS instead of SilcPKCSStruct.
50 Also remember that SilcPKCS is a pointer. */
51 typedef struct SilcPKCSStruct {
56 uint32 (*get_key_len)(struct SilcPKCSStruct *);
59 /* List of all PKCS in SILC. */
60 extern SilcPKCSObject silc_pkcs_list[];
62 /* SILC style public key object. Public key is read from file to this
63 object. Public keys received from network must be in this format as
73 /* SILC style private key object. Private key is read from file to this
81 /* Decoded SILC Public Key identifier. Note that some of the fields
90 } *SilcPublicKeyIdentifier;
92 /* Public and private key file headers */
93 #define SILC_PKCS_PUBLIC_KEYFILE_BEGIN "-----BEGIN SILC PUBLIC KEY-----\n"
94 #define SILC_PKCS_PUBLIC_KEYFILE_END "\n-----END SILC PUBLIC KEY-----\n"
95 #define SILC_PKCS_PRIVATE_KEYFILE_BEGIN "-----BEGIN SILC PRIVATE KEY-----\n"
96 #define SILC_PKCS_PRIVATE_KEYFILE_END "\n-----END SILC PRIVATE KEY-----\n"
98 /* Public and private key file encoding types */
99 #define SILC_PKCS_FILE_BIN 0
100 #define SILC_PKCS_FILE_PEM 1
104 /* Macros used to implement the SILC PKCS API */
106 /* XXX: This needs slight redesigning. These needs to be made even
107 more generic. I don't like that the actual prime generation is done
108 in PKCS_API_INIT. The primes used in key generation should be sent
109 as argument to the init function. By doing this we would achieve
110 that PKCS could be used as SIM's. The only requirement would be
111 that they are compiled against GMP (well, actually even that would
112 not be a requirement, but the most generic case anyway). The new init
113 would look something like this:
115 #define SILC_PKCS_API_INIT(pkcs) \
116 inline int silc_##pkcs##_init(void *context, uint32 keylen, \
119 Now we wouldn't have to send the SilcRng object since the primes are
120 provided as arguments. To send them as void * they could actually be
121 used as in anyway for real (MP_INT (SilcInt) or even something else
122 (the pointer could be kludged to be something else in the module))
123 (Plus, the SilcRng object management in prime generation would be
124 simpler and better what it is now (in silcprimegen.c, that is)).
127 #define SILC_PKCS_API_INIT(pkcs) \
128 int silc_##pkcs##_init(void *context, uint32 keylen, \
130 #define SILC_PKCS_API_CLEAR_KEYS(pkcs) \
131 void silc_##pkcs##_clear_keys(void *context)
132 #define SILC_PKCS_API_GET_PUBLIC_KEY(pkcs) \
133 unsigned char *silc_##pkcs##_get_public_key(void *context, \
135 #define SILC_PKCS_API_GET_PRIVATE_KEY(pkcs) \
136 unsigned char *silc_##pkcs##_get_private_key(void *context, \
138 #define SILC_PKCS_API_SET_PUBLIC_KEY(pkcs) \
139 uint32 silc_##pkcs##_set_public_key(void *context, unsigned char *key_data, \
141 #define SILC_PKCS_API_SET_PRIVATE_KEY(pkcs) \
142 int silc_##pkcs##_set_private_key(void *context, unsigned char *key_data, \
144 #define SILC_PKCS_API_CONTEXT_LEN(pkcs) \
145 uint32 silc_##pkcs##_context_len()
146 #define SILC_PKCS_API_DATA_CONTEXT_LEN(pkcs) \
147 uint32 silc_##pkcs##_data_context_len()
148 #define SILC_PKCS_API_SET_ARG(pkcs) \
149 int silc_##pkcs##_set_arg(void *context, \
150 void *data_context, \
153 #define SILC_PKCS_API_ENCRYPT(pkcs) \
154 int silc_##pkcs##_encrypt(void *context, \
155 unsigned char *src, \
157 unsigned char *dst, \
159 #define SILC_PKCS_API_DECRYPT(pkcs) \
160 int silc_##pkcs##_decrypt(void *context, \
161 unsigned char *src, \
163 unsigned char *dst, \
165 #define SILC_PKCS_API_SIGN(pkcs) \
166 int silc_##pkcs##_sign(void *context, \
167 unsigned char *src, \
169 unsigned char *dst, \
171 #define SILC_PKCS_API_VERIFY(pkcs) \
172 int silc_##pkcs##_verify(void *context, \
173 unsigned char *signature, \
174 uint32 signature_len, \
175 unsigned char *data, \
179 int silc_pkcs_alloc(const unsigned char *name, SilcPKCS *new_pkcs);
180 void silc_pkcs_free(SilcPKCS pkcs);
181 int silc_pkcs_is_supported(const unsigned char *name);
182 char *silc_pkcs_get_supported();
183 uint32 silc_pkcs_get_key_len(SilcPKCS self);
184 unsigned char *silc_pkcs_get_public_key(SilcPKCS pkcs, uint32 *len);
185 unsigned char *silc_pkcs_get_private_key(SilcPKCS pkcs, uint32 *len);
186 uint32 silc_pkcs_public_key_set(SilcPKCS pkcs, SilcPublicKey public_key);
187 uint32 silc_pkcs_public_key_data_set(SilcPKCS pkcs, unsigned char *pk,
189 int silc_pkcs_private_key_set(SilcPKCS pkcs, SilcPrivateKey private_key);
190 int silc_pkcs_private_key_data_set(SilcPKCS pkcs, unsigned char *prv,
192 int silc_pkcs_encrypt(SilcPKCS pkcs, unsigned char *src, uint32 src_len,
193 unsigned char *dst, uint32 *dst_len);
194 int silc_pkcs_decrypt(SilcPKCS pkcs, unsigned char *src, uint32 src_len,
195 unsigned char *dst, uint32 *dst_len);
196 int silc_pkcs_sign(SilcPKCS pkcs, unsigned char *src, uint32 src_len,
197 unsigned char *dst, uint32 *dst_len);
198 int silc_pkcs_verify(SilcPKCS pkcs, unsigned char *signature,
199 uint32 signature_len, unsigned char *data,
201 int silc_pkcs_sign_with_hash(SilcPKCS pkcs, SilcHash hash,
202 unsigned char *src, uint32 src_len,
203 unsigned char *dst, uint32 *dst_len);
204 int silc_pkcs_verify_with_hash(SilcPKCS pkcs, SilcHash hash,
205 unsigned char *signature,
206 uint32 signature_len,
209 char *silc_pkcs_encode_identifier(char *username, char *host, char *realname,
210 char *email, char *org, char *country);
211 SilcPublicKeyIdentifier silc_pkcs_decode_identifier(char *identifier);
212 void silc_pkcs_free_identifier(SilcPublicKeyIdentifier identifier);
213 SilcPublicKey silc_pkcs_public_key_alloc(char *name, char *identifier,
216 void silc_pkcs_public_key_free(SilcPublicKey public_key);
217 SilcPrivateKey silc_pkcs_private_key_alloc(char *name, unsigned char *prv,
219 void silc_pkcs_private_key_free(SilcPrivateKey private_key);
221 silc_pkcs_public_key_encode(SilcPublicKey public_key, uint32 *len);
223 silc_pkcs_public_key_data_encode(unsigned char *pk, uint32 pk_len,
224 char *pkcs, char *identifier,
226 int silc_pkcs_public_key_decode(unsigned char *data, uint32 data_len,
227 SilcPublicKey *public_key);
229 silc_pkcs_private_key_encode(SilcPrivateKey private_key, uint32 *len);
231 silc_pkcs_private_key_data_encode(unsigned char *prv, uint32 prv_len,
232 char *pkcs, uint32 *len);
233 int silc_pkcs_private_key_decode(unsigned char *data, uint32 data_len,
234 SilcPrivateKey *private_key);
235 int silc_pkcs_save_public_key(char *filename, SilcPublicKey public_key,
237 int silc_pkcs_save_public_key_data(char *filename, unsigned char *data,
240 int silc_pkcs_save_private_key(char *filename, SilcPrivateKey private_key,
241 unsigned char *passphrase,
243 int silc_pkcs_save_private_key_data(char *filename, unsigned char *data,
245 unsigned char *passphrase,
247 int silc_pkcs_load_public_key(char *filename, SilcPublicKey *public_key,
249 int silc_pkcs_load_private_key(char *filename, SilcPrivateKey *private_key,