You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
59 lines
1.4 KiB
59 lines
1.4 KiB
#include "privkey.h"
|
|
#include "pubkey.h"
|
|
#include <assert.h>
|
|
#include <ccan/mem/mem.h>
|
|
#include <ccan/str/hex/hex.h>
|
|
|
|
bool pubkey_from_der(secp256k1_context *secpctx,
|
|
const u8 *der, size_t len,
|
|
struct pubkey *key)
|
|
{
|
|
if (len != sizeof(key->der))
|
|
return false;
|
|
|
|
memcpy(key->der, memcheck(der, sizeof(key->der)), sizeof(key->der));
|
|
if (!secp256k1_ec_pubkey_parse(secpctx, &key->pubkey, key->der,
|
|
sizeof(key->der)))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Pubkey from privkey */
|
|
bool pubkey_from_privkey(secp256k1_context *secpctx,
|
|
const struct privkey *privkey,
|
|
struct pubkey *key,
|
|
unsigned int compressed_flags)
|
|
{
|
|
size_t outlen;
|
|
|
|
if (!secp256k1_ec_pubkey_create(secpctx, &key->pubkey, privkey->secret))
|
|
return false;
|
|
|
|
if (!secp256k1_ec_pubkey_serialize(secpctx, key->der, &outlen,
|
|
&key->pubkey, compressed_flags))
|
|
return false;
|
|
assert(outlen == sizeof(key->der));
|
|
return true;
|
|
}
|
|
|
|
bool pubkey_from_hexstr(secp256k1_context *secpctx,
|
|
const char *derstr, size_t slen, struct pubkey *key)
|
|
{
|
|
size_t dlen;
|
|
unsigned char der[sizeof(key->der)];
|
|
|
|
dlen = hex_data_size(slen);
|
|
if (dlen != sizeof(der))
|
|
return false;
|
|
|
|
if (!hex_decode(derstr, slen, der, dlen))
|
|
return false;
|
|
|
|
return pubkey_from_der(secpctx, der, dlen, key);
|
|
}
|
|
|
|
bool pubkey_eq(const struct pubkey *a, const struct pubkey *b)
|
|
{
|
|
return memcmp(a->der, b->der, sizeof(a->der)) == 0;
|
|
}
|
|
|