public function testMnemonicDecode()
{
$mnemonic = trim('teach start paradise collect blade chill gay childhood creek picture creator branch');
$known_seed = 'dcb85458ec2fcaaac54b71fba90bd4a5';
$known_secexp = '74b1f6c0caae485b4aeb2f26bab3cabdec4f0b432751bd454fe11b2d2907cbda';
$known_mpk = '819519e966729f31e1855eb75133d9e7f0c31abaadd8f184870d62771c62c2e759406ace1dee933095d15e4c719617e252f32dc0465393055f867aee9357cd52';
$known_addresses = ["", "", "", "", ""];
$seed = Electrum::decode_mnemonic($mnemonic);
$this->assertEquals($seed, $known_seed);
$mpk = Electrum::generate_mpk($seed);
$this->assertEquals($mpk, $known_mpk);
$secexp = Electrum::stretch_seed($seed);
$secexp = $secexp['seed'];
$this->assertEquals($secexp, $known_secexp);
$count_known_addresses = count($known_addresses);
for ($i = 0; $i < $count_known_addresses; $i++) {
$privkey = Electrum::generate_private_key($secexp, $i, 0);
$address_private_deriv = BitcoinLib::private_key_to_address($privkey, $this->magic_byte);
$public_deriv = Electrum::public_key_from_mpk($mpk, $i);
$address_private_deriv = BitcoinLib::public_key_to_address($public_deriv, $this->magic_byte);
}
}
<?php
use BitWasp\BitcoinLib\BitcoinLib;
use BitWasp\BitcoinLib\Electrum;
require_once __DIR__ . '/../vendor/autoload.php';
$magic_byte = '00';
$string = trim('teach start paradise collect blade chill gay childhood creek picture creator branch');
$seed = Electrum::decode_mnemonic($string);
echo "Words: {$string}\n";
echo "Seed: {$seed}\n";
$secexp = Electrum::stretch_seed($seed);
$secexp = $secexp['seed'];
echo "Secret Exponent: {$secexp}\n";
$mpk = Electrum::generate_mpk($seed);
echo "MPK: {$mpk}\n";
for ($i = 0; $i < 5; $i++) {
$privkey = Electrum::generate_private_key($secexp, $i, 0);
echo "Private key: {$privkey}\n";
echo "Private WIF: " . BitcoinLib::private_key_to_WIF($privkey, FALSE, $magic_byte) . "\n";
$public_key = Electrum::public_key_from_mpk($mpk, $i);
echo "Public Key: {$public_key}\n";
$address = BitcoinLib::public_key_to_address($public_key, $magic_byte);
echo "Public derivation: {$address}.\n";
$address = BitcoinLib::private_key_to_address($privkey, $magic_byte);
echo "Private derivation: {$address}.\n";
echo "-----------\n";
}
if (ctype_xdigit($line) and strlen($line) >= 32) {
$seed = $line;
continue;
}
$decode_mnemonic = Electrum::decode_mnemonic($line);
if (strlen($decode_mnemonic) > 29) {
$seed = $decode_mnemonic;
continue;
}
echo "Not a valid seed, or too weak ( < 128 bit)\n\n";
}
echo "Seed accepted.\n\n";
// Learn how many keys we put into the redeem script.
$seed = Electrum::stretch_seed($seed);
$seed = $seed['seed'];
$master_public_key = Electrum::generate_mpk($seed);
$private_keys = array();
$have_keys = 0;
$done = FALSE;
// Loop until the user is satisfied they have found all keys.
$j = 0;
$offset = 30;
while ($done == FALSE) {
$start = $offset * $j;
echo "Trying keys {$start} to " . ($start + $offset) . "\n";
// Do public derivation to learn which private keys to derive.
for ($i = $start; $i < $start + $offset; $i++) {
$pubkey = Electrum::public_key_from_mpk($master_public_key, $i);
if (in_array($pubkey, $decode_redeem_script['keys'])) {
$private_keys[] = BitcoinLib::private_key_to_WIF(Electrum::generate_private_key($seed, $i), FALSE, '00');
$have_keys++;