uint8_t cipher_generate(lob_t keys, lob_t secrets)
{
uint8_t secret[uECC_BYTES], key[uECC_BYTES*2], comp[uECC_BYTES+1];
if(!uECC_make_key(key, secret)) return 1;
uECC_compress(key,comp);
lob_set_base32(keys,"1a",comp,uECC_BYTES+1);
lob_set_base32(secrets,"1a",secret,uECC_BYTES);
return 0;
}
uint8_t cipher_generate(lob_t keys, lob_t secrets)
{
uint8_t secret[SECRET_BYTES], key[KEY_BYTES], comp[COMP_BYTES];
if(!uECC_make_key(key, secret, curve)) return 1;
uECC_compress(key,comp, curve);
lob_set_base32(keys,"1c",comp,COMP_BYTES);
lob_set_base32(secrets,"1c",secret,SECRET_BYTES);
return 0;
}
remote_t remote_new(lob_t key, uint8_t *token)
{
uint8_t hash[32];
remote_t remote;
if(!key || key->body_len != uECC_BYTES+1) return LOG("invalid key %d != %d",(key)?key->body_len:0,uECC_BYTES+1);
if(!(remote = malloc(sizeof(struct remote_struct)))) return NULL;
memset(remote,0,sizeof (struct remote_struct));
// copy in key and make ephemeral ones
uECC_decompress(key->body,remote->key);
uECC_make_key(remote->ekey, remote->esecret);
uECC_compress(remote->ekey, remote->ecomp);
if(token)
{
cipher_hash(remote->ecomp,16,hash);
memcpy(token,hash,16);
}
// generate a random seq starting point for message IV's
e3x_rand((uint8_t*)&(remote->seq),4);
return remote;
}
