ParagonIE_Sodium_Compat::crypto_generichash_final( string $ctx, int $length = self::CRYPTO_GENERICHASH_BYTES ): string

1749    public static function crypto_generichash_final(1750        #[\SensitiveParameter]1751        &$ctx,1752        $length = self::CRYPTO_GENERICHASH_BYTES1753    ) {1754        /* Type checks: */1755        ParagonIE_Sodium_Core_Util::declareScalarType($ctx, 'string', 1);1756        ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2);1757 1758        if (self::useNewSodiumAPI()) {1759            return sodium_crypto_generichash_final($ctx, $length);1760        }1761        if (self::use_fallback('crypto_generichash_final')) {1762            $func = '\\Sodium\\crypto_generichash_final';1763            return (string) $func($ctx, $length);1764        }1765        if ($length < 1) {1766            try {1767                self::memzero($ctx);1768            } catch (SodiumException $ex) {1769                unset($ctx);1770            }1771            return '';1772        }1773        if (PHP_INT_SIZE === 4) {1774            $result = ParagonIE_Sodium_Crypto32::generichash_final($ctx, $length);1775        } else {1776            $result = ParagonIE_Sodium_Crypto::generichash_final($ctx, $length);1777        }1778        try {1779            self::memzero($ctx);1780        } catch (SodiumException $ex) {1781            unset($ctx);1782        }1783        return $result;1784    }