Mercurial > dropbear

comparison common-algo.c @ 766:d1575fdc29a6 ecc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
start on ecdsa keys
author Matt Johnston <matt@ucc.asn.au>
date Tue, 09 Apr 2013 00:36:04 +0800
parents a78a38e402d1
children 7f604f9b3756
comparison
equal deleted inserted replaced
765:5503e05ab3a4 766:d1575fdc29a6
31 #include "ecc.h" 31 #include "ecc.h"
32 32
33 /* This file (algo.c) organises the ciphers which can be used, and is used to 33 /* This file (algo.c) organises the ciphers which can be used, and is used to
34 * decide which ciphers/hashes/compression/signing to use during key exchange*/ 34 * decide which ciphers/hashes/compression/signing to use during key exchange*/
35 35
36 #ifdef DROPBEAR_LTC_PRNG
37 int dropbear_ltc_prng = -1;
38 #endif
39
40
41
42 static int void_cipher(const unsigned char* in, unsigned char* out, 36 static int void_cipher(const unsigned char* in, unsigned char* out,
43 unsigned long len, void* UNUSED(cipher_state)) { 37 unsigned long len, void* UNUSED(cipher_state)) {
44 if (in != out) { 38 if (in != out) {
45 memmove(out, in, len); 39 memmove(out, in, len);
46 } 40 }
252 #endif 246 #endif
253 {"diffie-hellman-group1-sha1", 0, &kex_dh_group1, 1, NULL}, 247 {"diffie-hellman-group1-sha1", 0, &kex_dh_group1, 1, NULL},
254 {"diffie-hellman-group14-sha1", 0, &kex_dh_group14, 1, NULL}, 248 {"diffie-hellman-group14-sha1", 0, &kex_dh_group14, 1, NULL},
255 {NULL, 0, NULL, 0, NULL} 249 {NULL, 0, NULL, 0, NULL}
256 }; 250 };
257
258
259 /* Register the compiled in ciphers.
260 * This should be run before using any of the ciphers/hashes */
261 void crypto_init() {
262
263 const struct ltc_cipher_descriptor *regciphers[] = {
264 #ifdef DROPBEAR_AES
265 &aes_desc,
266 #endif
267 #ifdef DROPBEAR_BLOWFISH
268 &blowfish_desc,
269 #endif
270 #ifdef DROPBEAR_TWOFISH
271 &twofish_desc,
272 #endif
273 #ifdef DROPBEAR_3DES
274 &des3_desc,
275 #endif
276 NULL
277 };
278
279 const struct ltc_hash_descriptor *reghashes[] = {
280 /* we need sha1 for hostkey stuff regardless */
281 &sha1_desc,
282 #ifdef DROPBEAR_MD5_HMAC
283 &md5_desc,
284 #endif
285 #ifdef DROPBEAR_SHA256
286 &sha256_desc,
287 #endif
288 #ifdef DROPBEAR_SHA384
289 &sha384_desc,
290 #endif
291 #ifdef DROPBEAR_SHA512
292 &sha512_desc,
293 #endif
294 NULL
295 };
296 int i;
297
298 for (i = 0; regciphers[i] != NULL; i++) {
299 if (register_cipher(regciphers[i]) == -1) {
300 dropbear_exit("Error registering crypto");
301 }
302 }
303
304 for (i = 0; reghashes[i] != NULL; i++) {
305 if (register_hash(reghashes[i]) == -1) {
306 dropbear_exit("Error registering crypto");
307 }
308 }
309
310 #ifdef DROPBEAR_LTC_PRNG
311 dropbear_ltc_prng = register_prng(&dropbear_prng_desc);
312 if (dropbear_ltc_prng == -1) {
313 dropbear_exit("Error registering crypto");
314 }
315 #endif
316
317 #ifdef DROPBEAR_ECC
318 ltc_mp = ltm_desc;
319 #endif
320 }
321 251
322 /* algolen specifies the length of algo, algos is our local list to match 252 /* algolen specifies the length of algo, algos is our local list to match
323 * against. 253 * against.
324 * Returns DROPBEAR_SUCCESS if we have a match for algo, DROPBEAR_FAILURE 254 * Returns DROPBEAR_SUCCESS if we have a match for algo, DROPBEAR_FAILURE
325 * otherwise */ 255 * otherwise */