ParagonIE\Halite\KeyFactory::deriveAuthenticationKey PHP Method

    public static function deriveAuthenticationKey(HiddenString $password, string $salt, string $level = self::INTERACTIVE) : AuthenticationKey
    {
        $kdfLimits = self::getSecurityLevels($level);
        // VERSION 2+ (argon2)
        if (Util::safeStrlen($salt) !== \Sodium\CRYPTO_PWHASH_SALTBYTES) {
            throw new CryptoException\InvalidSalt('Expected ' . \Sodium\CRYPTO_PWHASH_SALTBYTES . ' bytes, got ' . Util::safeStrlen($salt));
        }
        $secretKey = \Sodium\crypto_pwhash(\Sodium\CRYPTO_AUTH_KEYBYTES, $password->getString(), $salt, $kdfLimits[0], $kdfLimits[1]);
        return new AuthenticationKey(new HiddenString($secretKey));
    }