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#include "includes.h"
#include "dbutil.h"
#include "crypto_desc.h"
#include "ltc_prng.h"
#include "ecc.h"
#include "dbrandom.h"
#if DROPBEAR_LTC_PRNG
int dropbear_ltc_prng = -1;
#endif
/* Wrapper for libtommath */
static mp_err dropbear_rand_source(void* out, size_t size) {
genrandom((unsigned char*)out, (unsigned int)size);
return MP_OKAY;
}
/* Register the compiled in ciphers.
* This should be run before using any of the ciphers/hashes */
void crypto_init() {
const struct ltc_cipher_descriptor *regciphers[] = {
#if DROPBEAR_AES
&aes_desc,
#endif
#if DROPBEAR_BLOWFISH
&blowfish_desc,
#endif
#if DROPBEAR_TWOFISH
&twofish_desc,
#endif
#if DROPBEAR_3DES
&des3_desc,
#endif
NULL
};
const struct ltc_hash_descriptor *reghashes[] = {
/* we need sha1 for hostkey stuff regardless */
&sha1_desc,
#if DROPBEAR_MD5_HMAC
&md5_desc,
#endif
#if DROPBEAR_SHA256
&sha256_desc,
#endif
#if DROPBEAR_SHA384
&sha384_desc,
#endif
#if DROPBEAR_SHA512
&sha512_desc,
#endif
NULL
};
int i;
for (i = 0; regciphers[i] != NULL; i++) {
if (register_cipher(regciphers[i]) == -1) {
dropbear_exit("Error registering crypto");
}
}
for (i = 0; reghashes[i] != NULL; i++) {
if (register_hash(reghashes[i]) == -1) {
dropbear_exit("Error registering crypto");
}
}
#if DROPBEAR_LTC_PRNG
dropbear_ltc_prng = register_prng(&dropbear_prng_desc);
if (dropbear_ltc_prng == -1) {
dropbear_exit("Error registering crypto");
}
#endif
mp_rand_source(dropbear_rand_source);
#if DROPBEAR_ECC
ltc_mp = ltm_desc;
dropbear_ecc_fill_dp();
#endif
}
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