Fragment of code from [https://crackstation.net/hashing-security.htm#aspsourcecode] In compare with orginal methods: I removed hash alhorithm from hash string

PasswordHashService elements

function create_hash($password)
    {
        // format: algorithm:iterations:salt:hash
        $salt = mcrypt_create_iv(PBKDF2_SALT_BYTE_SIZE, MCRYPT_DEV_URANDOM);
        $encoded_salt = base64_encode($salt);
        return PBKDF2_ITERATIONS . ":" .  $encoded_salt . ":" .
        base64_encode($this->pbkdf2(
            PBKDF2_HASH_ALGORITHM,
            $password,
            $salt,
            PBKDF2_ITERATIONS,
            PBKDF2_HASH_BYTE_SIZE,
            true
        ));
    }

    function validate_password($password, $correct_hash)
    {
        $params = explode(":", $correct_hash);
        if(count($params) < HASH_SECTIONS)
            return false;
        $pbkdf2 = base64_decode($params[HASH_PBKDF2_INDEX]);
        $salt = base64_decode($params[HASH_SALT_INDEX]);
        return $this->slow_equals(
            $pbkdf2,
            $this->pbkdf2(
                PBKDF2_HASH_ALGORITHM,
                $password,
                $salt,
                (int)$params[HASH_ITERATION_INDEX],
                strlen($pbkdf2),
                true
            )
        );
    }