/** Import a PRNG state @param in The PRNG state @param inlen Size of the state @param prng The PRNG to import @return CRYPT_OK if successful */ int yarrow_import(const unsigned char *in, unsigned long inlen, prng_state *prng) { int err; LTC_ARGCHK(in != NULL); LTC_ARGCHK(prng != NULL); if (inlen != 64) { return CRYPT_INVALID_ARG; } if ((err = yarrow_start(prng)) != CRYPT_OK) { return err; } return yarrow_add_entropy(in, 64, prng); }
/** Import a PRNG state @param in The PRNG state @param inlen Size of the state @param prng The PRNG to import @return CRYPT_OK if successful */ int yarrow_import(const unsigned char *in, unsigned long inlen, prng_state *prng) { int err; LTC_ARGCHK(in != NULL); LTC_ARGCHK(prng != NULL); LTC_MUTEX_LOCK(&prng->yarrow.prng_lock); if (inlen != 64) { LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock); return CRYPT_INVALID_ARG; } if ((err = yarrow_start(prng)) != CRYPT_OK) { LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock); return err; } err = yarrow_add_entropy(in, 64, prng); LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock); return err; }
/** PRNG self-test @return CRYPT_OK if successful, CRYPT_NOP if self-testing has been disabled */ int yarrow_test(void) { #ifndef LTC_TEST return CRYPT_NOP; #else int err; prng_state prng; if ((err = yarrow_start(&prng)) != CRYPT_OK) { return err; } /* now let's test the hash/cipher that was chosen */ if ((err = cipher_descriptor[prng.yarrow.cipher].test()) != CRYPT_OK) { return err; } if ((err = hash_descriptor[prng.yarrow.hash].test()) != CRYPT_OK) { return err; } return CRYPT_OK; #endif }
int main() { ltc_mp = ltm_desc; rsa_key priv_key, pub_key; int hash_idx, prng_idx; int ret = rsa_import(openssl_private_rsa, sizeof(openssl_private_rsa), &priv_key); ret = rsa_import(openssl_public_rsa, sizeof(openssl_public_rsa), &pub_key); if (register_hash(&sha1_desc) == -1) { printf("Error registering SHA1\n"); return -1; } hash_idx = find_hash("sha1"); register_prng(&sprng_desc); prng_idx = find_prng("sprng"); prng_state prng; int err; if ((err = yarrow_start(&prng)) != CRYPT_OK) { printf("Start error: %s\n", error_to_string(err)); } /* add entropy */ if ((err = yarrow_add_entropy("hello world", 11, &prng)) != CRYPT_OK) { printf("Add_entropy error: %s\n", error_to_string(err)); } int stat; unsigned char buf[1024]; long size = 1024; //ret = rsa_decrypt_key(sig, strlen(sig), buf, &size, 0, 0, hash_idx, &stat, &key); ret = rsa_sign_hash(hash, strlen(hash), buf, &size, &prng, prng_idx, hash_idx, 0, &priv_key); ret = rsa_verify_hash(sig, strlen(sig), hash, strlen(hash), hash_idx, 0, &stat, &pub_key); printf("status is : %d\n", ret); //load stuff! return 0; }