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comparison random.c @ 755:b07eb3dc23ec ecc

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refactor kexdh code a bit, start working on ecdh etc
author Matt Johnston <matt@ucc.asn.au>
date Tue, 26 Mar 2013 01:35:22 +0800
parents 84157e435c52
children 76fba0856749
comparison
equal deleted inserted replaced
725:49f68a7b7a55 755:b07eb3dc23ec
34 #define MAX_COUNTER 1<<30 34 #define MAX_COUNTER 1<<30
35 35
36 static unsigned char hashpool[SHA1_HASH_SIZE] = {0}; 36 static unsigned char hashpool[SHA1_HASH_SIZE] = {0};
37 static int donerandinit = 0; 37 static int donerandinit = 0;
38 38
39 int dropbear_ltc_prng = -1;
40
39 #define INIT_SEED_SIZE 32 /* 256 bits */ 41 #define INIT_SEED_SIZE 32 /* 256 bits */
40 42
41 /* The basic setup is we read some data from /dev/(u)random or prngd and hash it 43 /* The basic setup is we read some data from /dev/(u)random or prngd and hash it
42 * into hashpool. To read data, we hash together current hashpool contents, 44 * into hashpool. To read data, we hash together current hashpool contents,
43 * and a counter. We feed more data in by hashing the current pool and new 45 * and a counter. We feed more data in by hashing the current pool and new
229 /* When a private key is read by the client or server it will 231 /* When a private key is read by the client or server it will
230 * be added to the hashpool - see runopts.c */ 232 * be added to the hashpool - see runopts.c */
231 233
232 sha1_done(&hs, hashpool); 234 sha1_done(&hs, hashpool);
233 235
236 #ifdef DROPBEAR_LTC_PRNG
237 if (dropbear_ltc_prng == -1) {
238 dropbear_ltc_prng = register_prng(&dropbear_prng_desc);
239 dropbear_assert(dropbear_ltc_prng != -1);
240 }
241 #endif
242
234 counter = 0; 243 counter = 0;
235 donerandinit = 1; 244 donerandinit = 1;
236 245
237 /* Feed it all back into /dev/urandom - this might help if Dropbear 246 /* Feed it all back into /dev/urandom - this might help if Dropbear
238 * is running from inetd and gets new state each time */ 247 * is running from inetd and gets new state each time */