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 {
28 int (*init)(void *, SilcUInt32, SilcRng);
29 void (*clear_keys)(void *);
30 unsigned char *(*get_public_key)(void *, SilcUInt32 *);
31 unsigned char *(*get_private_key)(void *, SilcUInt32 *);
32 SilcUInt32 (*set_public_key)(void *, unsigned char *, SilcUInt32);
33 int (*set_private_key)(void *, unsigned char *, SilcUInt32);
34 SilcUInt32 (*context_len)();
35 int (*encrypt)(void *, unsigned char *, SilcUInt32,
36 unsigned char *, SilcUInt32 *);
37 int (*decrypt)(void *, unsigned char *, SilcUInt32,
38 unsigned char *, SilcUInt32 *);
39 int (*sign)(void *, unsigned char *, SilcUInt32,
40 unsigned char *, SilcUInt32 *);
41 int (*verify)(void *, unsigned char *, SilcUInt32,
42 unsigned char *, SilcUInt32);
45 /* The main SILC PKCS structure. Use SilcPKCS instead of SilcPKCSStruct.
46 Also remember that SilcPKCS is a pointer. */
47 typedef struct SilcPKCSStruct {
52 SilcUInt32 (*get_key_len)(struct SilcPKCSStruct *);
55 /* SILC style public key object. Public key is read from file to this
56 object. Public keys received from network must be in this format as
66 /* SILC style private key object. Private key is read from file to this
74 /* Decoded SILC Public Key identifier. Note that some of the fields
83 } *SilcPublicKeyIdentifier;
85 /* Public and private key file headers */
86 #define SILC_PKCS_PUBLIC_KEYFILE_BEGIN "-----BEGIN SILC PUBLIC KEY-----\n"
87 #define SILC_PKCS_PUBLIC_KEYFILE_END "\n-----END SILC PUBLIC KEY-----\n"
88 #define SILC_PKCS_PRIVATE_KEYFILE_BEGIN "-----BEGIN SILC PRIVATE KEY-----\n"
89 #define SILC_PKCS_PRIVATE_KEYFILE_END "\n-----END SILC PRIVATE KEY-----\n"
91 /* Public and private key file encoding types */
92 #define SILC_PKCS_FILE_BIN 0
93 #define SILC_PKCS_FILE_PEM 1
95 /* Marks for all PKCS in silc. This can be used in silc_pkcs_unregister
96 to unregister all PKCS at once. */
97 #define SILC_ALL_PKCS ((SilcPKCSObject *)1)
99 /* Static list of PKCS for silc_pkcs_register_default(). */
100 extern DLLAPI const SilcPKCSObject silc_default_pkcs[];
102 /* Default PKXS in the SILC protocol */
103 #define SILC_DEFAULT_PKCS "rsa"
107 /* Macros used to implement the SILC PKCS API */
109 /* XXX: This needs slight redesigning. These needs to be made even
110 more generic. I don't like that the actual prime generation is done
111 in PKCS_API_INIT. The primes used in key generation should be sent
112 as argument to the init function. By doing this we would achieve
113 that PKCS could be used as SIM's. The only requirement would be
114 that they are compiled against GMP (well, actually even that would
115 not be a requirement, but the most generic case anyway). The new init
116 would look something like this:
118 #define SILC_PKCS_API_INIT(pkcs) \
119 inline int silc_##pkcs##_init(void *context, SilcUInt32 keylen, \
122 Now we wouldn't have to send the SilcRng object since the primes are
123 provided as arguments. To send them as void * they could actually be
124 used as in anyway for real (MP_INT (SilcMPInt) or even something else
125 (the pointer could be kludged to be something else in the module))
126 (Plus, the SilcRng object management in prime generation would be
127 simpler and better what it is now (in silcprimegen.c, that is)).
130 #define SILC_PKCS_API_INIT(pkcs) \
131 int silc_##pkcs##_init(void *context, SilcUInt32 keylen, \
133 #define SILC_PKCS_API_CLEAR_KEYS(pkcs) \
134 void silc_##pkcs##_clear_keys(void *context)
135 #define SILC_PKCS_API_GET_PUBLIC_KEY(pkcs) \
136 unsigned char *silc_##pkcs##_get_public_key(void *context, \
138 #define SILC_PKCS_API_GET_PRIVATE_KEY(pkcs) \
139 unsigned char *silc_##pkcs##_get_private_key(void *context, \
141 #define SILC_PKCS_API_SET_PUBLIC_KEY(pkcs) \
142 SilcUInt32 silc_##pkcs##_set_public_key(void *context, unsigned char *key_data, \
144 #define SILC_PKCS_API_SET_PRIVATE_KEY(pkcs) \
145 int silc_##pkcs##_set_private_key(void *context, unsigned char *key_data, \
147 #define SILC_PKCS_API_CONTEXT_LEN(pkcs) \
148 SilcUInt32 silc_##pkcs##_context_len()
149 #define SILC_PKCS_API_ENCRYPT(pkcs) \
150 int silc_##pkcs##_encrypt(void *context, \
151 unsigned char *src, \
152 SilcUInt32 src_len, \
153 unsigned char *dst, \
155 #define SILC_PKCS_API_DECRYPT(pkcs) \
156 int silc_##pkcs##_decrypt(void *context, \
157 unsigned char *src, \
158 SilcUInt32 src_len, \
159 unsigned char *dst, \
161 #define SILC_PKCS_API_SIGN(pkcs) \
162 int silc_##pkcs##_sign(void *context, \
163 unsigned char *src, \
164 SilcUInt32 src_len, \
165 unsigned char *dst, \
167 #define SILC_PKCS_API_VERIFY(pkcs) \
168 int silc_##pkcs##_verify(void *context, \
169 unsigned char *signature, \
170 SilcUInt32 signature_len, \
171 unsigned char *data, \
175 bool silc_pkcs_register(SilcPKCSObject *pkcs);
176 bool silc_pkcs_unregister(SilcPKCSObject *pkcs);
177 bool silc_pkcs_register_default(void);
178 bool silc_pkcs_alloc(const unsigned char *name, SilcPKCS *new_pkcs);
179 void silc_pkcs_free(SilcPKCS pkcs);
180 int silc_pkcs_is_supported(const unsigned char *name);
181 char *silc_pkcs_get_supported(void);
182 int silc_pkcs_generate_key(SilcPKCS pkcs, SilcUInt32 bits_key_len,
184 SilcUInt32 silc_pkcs_get_key_len(SilcPKCS self);
185 unsigned char *silc_pkcs_get_public_key(SilcPKCS pkcs, SilcUInt32 *len);
186 unsigned char *silc_pkcs_get_private_key(SilcPKCS pkcs, SilcUInt32 *len);
187 SilcUInt32 silc_pkcs_public_key_set(SilcPKCS pkcs, SilcPublicKey public_key);
188 SilcUInt32 silc_pkcs_public_key_data_set(SilcPKCS pkcs, unsigned char *pk,
190 int silc_pkcs_private_key_set(SilcPKCS pkcs, SilcPrivateKey private_key);
191 int silc_pkcs_private_key_data_set(SilcPKCS pkcs, unsigned char *prv,
193 int silc_pkcs_encrypt(SilcPKCS pkcs, unsigned char *src, SilcUInt32 src_len,
194 unsigned char *dst, SilcUInt32 *dst_len);
195 int silc_pkcs_decrypt(SilcPKCS pkcs, unsigned char *src, SilcUInt32 src_len,
196 unsigned char *dst, SilcUInt32 *dst_len);
197 int silc_pkcs_sign(SilcPKCS pkcs, unsigned char *src, SilcUInt32 src_len,
198 unsigned char *dst, SilcUInt32 *dst_len);
199 int silc_pkcs_verify(SilcPKCS pkcs, unsigned char *signature,
200 SilcUInt32 signature_len, unsigned char *data,
201 SilcUInt32 data_len);
202 int silc_pkcs_sign_with_hash(SilcPKCS pkcs, SilcHash hash,
203 unsigned char *src, SilcUInt32 src_len,
204 unsigned char *dst, SilcUInt32 *dst_len);
205 int silc_pkcs_verify_with_hash(SilcPKCS pkcs, SilcHash hash,
206 unsigned char *signature,
207 SilcUInt32 signature_len,
209 SilcUInt32 data_len);
210 char *silc_pkcs_encode_identifier(char *username, char *host, char *realname,
211 char *email, char *org, char *country);
212 SilcPublicKeyIdentifier silc_pkcs_decode_identifier(char *identifier);
213 void silc_pkcs_free_identifier(SilcPublicKeyIdentifier identifier);
214 SilcPublicKey silc_pkcs_public_key_alloc(char *name, char *identifier,
217 void silc_pkcs_public_key_free(SilcPublicKey public_key);
218 SilcPrivateKey silc_pkcs_private_key_alloc(char *name, unsigned char *prv,
220 void silc_pkcs_private_key_free(SilcPrivateKey private_key);
222 silc_pkcs_public_key_encode(SilcPublicKey public_key, SilcUInt32 *len);
224 silc_pkcs_public_key_data_encode(unsigned char *pk, SilcUInt32 pk_len,
225 char *pkcs, char *identifier,
227 int silc_pkcs_public_key_decode(unsigned char *data, SilcUInt32 data_len,
228 SilcPublicKey *public_key);
229 bool silc_pkcs_public_key_compare(SilcPublicKey key1, SilcPublicKey key2);
231 silc_pkcs_private_key_encode(SilcPrivateKey private_key, SilcUInt32 *len);
233 silc_pkcs_private_key_data_encode(unsigned char *prv, SilcUInt32 prv_len,
234 char *pkcs, SilcUInt32 *len);
235 int silc_pkcs_private_key_decode(unsigned char *data, SilcUInt32 data_len,
236 SilcPrivateKey *private_key);
237 int silc_pkcs_save_public_key(char *filename, SilcPublicKey public_key,
238 SilcUInt32 encoding);
239 int silc_pkcs_save_public_key_data(char *filename, unsigned char *data,
241 SilcUInt32 encoding);
242 int silc_pkcs_save_private_key(char *filename, SilcPrivateKey private_key,
243 unsigned char *passphrase,
244 SilcUInt32 encoding);
245 int silc_pkcs_save_private_key_data(char *filename, unsigned char *data,
247 unsigned char *passphrase,
248 SilcUInt32 encoding);
249 int silc_pkcs_load_public_key(char *filename, SilcPublicKey *public_key,
250 SilcUInt32 encoding);
251 int silc_pkcs_load_private_key(char *filename, SilcPrivateKey *private_key,
252 SilcUInt32 encoding);