ParagonIE_Sodium_Compat::crypto_generichash_init_salt_personal( string|null $key = '', int $length = self::CRYPTO_GENERICHASH_BYTES, string $salt = '', string $personal = '' ): string

1844    public static function crypto_generichash_init_salt_personal(1845        #[\SensitiveParameter]1846        $key = '',1847        $length = self::CRYPTO_GENERICHASH_BYTES,1848        $salt = '',1849        $personal = ''1850    ) {1851        /* Type checks: */1852        if (is_null($key)) {1853            $key = '';1854        }1855        ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 1);1856        ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2);1857        ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3);1858        ParagonIE_Sodium_Core_Util::declareScalarType($personal, 'string', 4);1859        $salt = str_pad($salt, 16, "\0", STR_PAD_RIGHT);1860        $personal = str_pad($personal, 16, "\0", STR_PAD_RIGHT);1861 1862        /* Input validation: */1863        if (!empty($key)) {1864            /*1865            if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) {1866                throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.');1867            }1868            */1869            if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) {1870                throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.');1871            }1872        }1873        if (PHP_INT_SIZE === 4) {1874            return ParagonIE_Sodium_Crypto32::generichash_init_salt_personal($key, $length, $salt, $personal);1875        }1876        return ParagonIE_Sodium_Crypto::generichash_init_salt_personal($key, $length, $salt, $personal);1877    }