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#include "../lightning/external/libwally-core/include/wally_address.h" | |
#include "../lightning/external/libwally-core/include/wally_bip32.h" | |
#include "../lightning/external/libwally-core/src/secp256k1/include/secp256k1.h" | |
#include "../lightning/common/bech32.c" | |
#include <ccan/crypto/sha256/sha256.h> | |
#include <ccan/crypto/ripemd160/ripemd160.h> | |
#include <ccan/str/hex/hex.h> | |
#include <err.h> | |
#include <assert.h> | |
#include <stdio.h> | |
int main(int argc, char *argv[]) | |
{ | |
unsigned char *seed; | |
size_t seed_len; | |
struct ext_key master_extkey, child_extkey, child2_extkey; | |
seed_len = hex_data_size(strlen(argv[1])); | |
seed = malloc(seed_len); | |
if (!hex_decode(argv[1], strlen(argv[1]), seed, seed_len)) | |
errx(1, "Expected hex"); | |
/* Generate BIP32 children m/0/0/i */ | |
if (bip32_key_from_seed(seed, seed_len, | |
BIP32_VER_TEST_PRIVATE, | |
0, &master_extkey) != WALLY_OK) | |
errx(1, "bip32_key_from_seed failed"); | |
if (bip32_key_from_parent(&master_extkey, 0, BIP32_FLAG_KEY_PRIVATE, | |
&child_extkey) != WALLY_OK) | |
errx(1, "bip32_key_from_parent/0 failed"); | |
if (bip32_key_from_parent(&child_extkey, 0, BIP32_FLAG_KEY_PRIVATE, | |
&child2_extkey) != WALLY_OK) | |
errx(1, "bip32_key_from_parent/0/0 failed"); | |
for (uint32_t i = 0; i < 10; i++) { | |
secp256k1_pubkey pubkey; | |
char *wif; | |
struct ripemd160 r160; | |
unsigned char key[33]; | |
struct sha256 s256; | |
char swaddr[73 + strlen("bcrt")]; | |
struct ext_key ext; | |
unsigned char priv_key[32]; | |
char privkey_hex[65]; | |
char pubkey_hex[67]; | |
if (bip32_key_from_parent(&child2_extkey, i, | |
BIP32_FLAG_KEY_PRIVATE, &ext) | |
!= WALLY_OK) | |
errx(1, "bip32_key_from_parent/0/0/%u failed", i); | |
/* libwally says: The private key with prefix byte 0. */ | |
memcpy(priv_key, ext.priv_key+1, sizeof(priv_key)); | |
if (!hex_encode(priv_key, sizeof(priv_key), | |
privkey_hex, sizeof(privkey_hex))) | |
errx(1, "Cannot hex-encode privkey"); | |
if (wally_wif_from_bytes(priv_key, sizeof(priv_key), 0xef, | |
WALLY_WIF_FLAG_COMPRESSED, | |
&wif) != WALLY_OK) | |
errx(1, "Cannot encode privkey seed/0/0/%u", i); | |
if (secp256k1_ec_pubkey_create(wally_get_secp_context(), | |
&pubkey, priv_key) != 1) | |
errx(1, "Cannot derive pubkey"); | |
size_t outlen = 33; | |
if (!secp256k1_ec_pubkey_serialize(wally_get_secp_context(), | |
key, &outlen, &pubkey, | |
SECP256K1_EC_COMPRESSED)) | |
errx(1, "Cannot serialize pubkey"); | |
if (!hex_encode(key, outlen, pubkey_hex, sizeof(pubkey_hex))) | |
errx(1, "Cannot hex-encode pubkey"); | |
printf("pubkey 0/0/%u: %s\n", i, pubkey_hex); | |
printf("privkey 0/0/%u: %s\n", i, privkey_hex); | |
printf("WIF 0/0/%u: %s\n", i, wif); | |
assert(outlen == 33); | |
sha256(&s256, key, sizeof(key)); | |
ripemd160(&r160, s256.u.u8, sizeof(s256.u.u8)); | |
if (segwit_addr_encode(swaddr, "bcrt", 0, r160.u.u8, sizeof(r160.u.u8)) != 1) | |
errx(1, "Cannot make segwit address"); | |
printf("P2WPKH 0/0/%u: %s\n\n", i, swaddr); | |
} | |
return 0; | |
} |
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