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<?php
namespace BitWasp\Bitcoin\Mnemonic\Bip39;
use BitWasp\Bitcoin\Crypto\Hash;
use BitWasp\Buffertools\Buffer;
use BitWasp\Buffertools\BufferInterface;
class Bip39SeedGenerator
{
/**
* @param string $string
* @return BufferInterface
* @throws \Exception
*/
private function normalize($string)
if (!class_exists('Normalizer')) {
if (mb_detect_encoding($string) === 'UTF-8') {
throw new \Exception('UTF-8 passphrase is not supported without the PECL intl extension installed.');
} else {
return new Buffer($string);
}
return new Buffer(\Normalizer::normalize($string, \Normalizer::FORM_KD));
* @param string $mnemonic
* @param string $passphrase
* @return \BitWasp\Buffertools\BufferInterface
public function getSeed($mnemonic, $passphrase = '')
return Hash::pbkdf2(
'sha512',
$this->normalize($mnemonic),
$this->normalize("mnemonic" . $passphrase),
2048,
64
);
Bit-Wasp /
bitcoin-php
