/**
* Load a keypair from a file
*
* @param string $filePath
* @param int $type
* @return KeyPair
*
* @throws CryptoException\InvalidFlags
*/
public static function fromFile($filePath, $type = Key::CRYPTO_SIGN)
{
$keys = SignatureSecretKey::fromFile($filePath, $type | Key::ASYMMETRIC | Key::ENCRYPTION);
return new SignatureKeyPair(...$keys);
}
/**
* Sign a message with our private key
*
* @param string $message Message to sign
* @param SignatureSecretKey $privateKey
* @param boolean $raw Don't hex encode the output?
* @return string Signature (detached)
*/
public static function sign(string $message, SignatureSecretKey $privateKey, bool $raw = false) : string
{
$signed = \Sodium\crypto_sign_detached($message, $privateKey->getRawKeyMaterial());
if ($raw) {
return $signed;
}
return \Sodium\bin2hex($signed);
}
