mirror of
https://github.com/ElementsProject/lightning.git
synced 2024-11-20 10:39:49 +01:00
064cf6cc39
Use ccan/opt, make arguments bool, remove commented-out code. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
#define _GNU_SOURCE 1
|
|
#include "secp256k1.h"
|
|
#include "secp256k1_ecdh.h"
|
|
#include "onion_key.h"
|
|
#include "version.h"
|
|
#include <time.h>
|
|
#include <ccan/str/hex/hex.h>
|
|
#include <ccan/opt/opt.h>
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
|
|
/* Not really! */
|
|
static void random_bytes(void *dst, size_t n)
|
|
{
|
|
size_t i;
|
|
unsigned char *d = dst;
|
|
|
|
for (i = 0; i < n; i++)
|
|
d[i] = random() % 256;
|
|
}
|
|
|
|
static void random_key(secp256k1_context *ctx,
|
|
struct seckey *seckey, secp256k1_pubkey *pkey)
|
|
{
|
|
do {
|
|
random_bytes(seckey->u.u8, sizeof(seckey->u));
|
|
} while (!secp256k1_ec_pubkey_create(ctx, pkey, seckey->u.u8));
|
|
}
|
|
|
|
/* We don't want to spend a byte encoding sign, so make sure it's 0x2 */
|
|
static void gen_keys(secp256k1_context *ctx,
|
|
struct seckey *seckey, struct compressed_pubkey *pubkey)
|
|
{
|
|
secp256k1_pubkey pkey;
|
|
size_t len;
|
|
|
|
random_key(ctx, seckey, &pkey);
|
|
|
|
secp256k1_ec_pubkey_serialize(ctx, pubkey->u8, &len, &pkey,
|
|
SECP256K1_EC_COMPRESSED);
|
|
assert(len == sizeof(pubkey->u8));
|
|
}
|
|
|
|
void print_keypair(bool pub, bool priv)
|
|
{
|
|
secp256k1_context *ctx;
|
|
struct seckey seckey;
|
|
struct compressed_pubkey pubkey;
|
|
char sechex[hex_str_size(sizeof(seckey))];
|
|
char pubhex[hex_str_size(sizeof(pubkey))];
|
|
|
|
assert(pub || priv);
|
|
|
|
ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN);
|
|
gen_keys(ctx, &seckey, &pubkey);
|
|
|
|
hex_encode(&seckey, sizeof(seckey), sechex, sizeof(sechex));
|
|
hex_encode(&pubkey, sizeof(pubkey), pubhex, sizeof(pubhex));
|
|
|
|
if (pub && priv) {
|
|
printf("%s:%s\n", sechex, pubhex);
|
|
} else {
|
|
printf("%s\n", (priv ? sechex : pubhex));
|
|
}
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
bool pub = true, priv = true;
|
|
|
|
opt_register_noarg("--help|-h", opt_usage_and_exit,
|
|
"[<seeds>...]\n"
|
|
"Generate (deterministic if seed) secp256k1 keys",
|
|
"Print this message.");
|
|
opt_register_noarg("--pub",
|
|
opt_set_invbool, &priv,
|
|
"Generate only the public key");
|
|
opt_register_noarg("--priv",
|
|
opt_set_invbool, &pub,
|
|
"Generate only the private key");
|
|
opt_register_version();
|
|
|
|
opt_parse(&argc, argv, opt_log_stderr_exit);
|
|
if (!priv && !pub)
|
|
opt_usage_exit_fail("Can't use --pub and --priv");
|
|
|
|
if (argc == 1) {
|
|
srandom(time(NULL) + getpid());
|
|
print_keypair(pub, priv);
|
|
} else {
|
|
int i;
|
|
for (i = 1; i < argc; i++) {
|
|
srandom(atoi(argv[i]));
|
|
print_keypair(pub, priv);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|