TwoFactorAuthAlgorithm

Raxos\Security\TwoFactor\TwoFactorAuthAlgorithm enumerates the HMAC hashing algorithms usable for TOTP code generation by TwoFactorAuth.

enum TwoFactorAuthAlgorithm: string

Cases

Case	Value
SHA1	sha1
SHA256	sha256
SHA512	sha512
MD5	md5

SHA1 is the common default and offers the broadest compatibility with authenticator apps. Match the value to whatever the app on the other side expects.

Example

<?php
declare(strict_types=1);

use Raxos\Security\TwoFactor\{TwoFactorAuth, TwoFactorAuthAlgorithm};

$totp = new TwoFactorAuth(
    issuer: 'Passly',
    algorithm: TwoFactorAuthAlgorithm::SHA256,
);