ZipEncryptionMethod.php
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<?php
namespace PhpZip\Constants;
use PhpZip\Exception\InvalidArgumentException;
/**
* Class ZipEncryptionMethod.
*/
final class ZipEncryptionMethod
{
const NONE = -1;
/** @var int Traditional PKWARE encryption. */
const PKWARE = 0;
/** @var int WinZip AES-256 */
const WINZIP_AES_256 = 1;
/** @var int WinZip AES-128 */
const WINZIP_AES_128 = 2;
/** @var int WinZip AES-192 */
const WINZIP_AES_192 = 3;
/** @var array<int, string> */
private static $ENCRYPTION_METHODS = [
self::NONE => 'no encryption',
self::PKWARE => 'Traditional PKWARE encryption',
self::WINZIP_AES_128 => 'WinZip AES-128',
self::WINZIP_AES_192 => 'WinZip AES-192',
self::WINZIP_AES_256 => 'WinZip AES-256',
];
/**
* @param int $value
*
* @return string
*/
public static function getEncryptionMethodName($value)
{
$value = (int) $value;
return isset(self::$ENCRYPTION_METHODS[$value]) ?
self::$ENCRYPTION_METHODS[$value] :
'Unknown Encryption Method';
}
/**
* @param int $encryptionMethod
*
* @return bool
*/
public static function hasEncryptionMethod($encryptionMethod)
{
return isset(self::$ENCRYPTION_METHODS[$encryptionMethod]);
}
/**
* @param int $encryptionMethod
*
* @return bool
*/
public static function isWinZipAesMethod($encryptionMethod)
{
return \in_array(
(int) $encryptionMethod,
[
self::WINZIP_AES_256,
self::WINZIP_AES_192,
self::WINZIP_AES_128,
],
true
);
}
/**
* @param int $encryptionMethod
*
* @throws InvalidArgumentException
*/
public static function checkSupport($encryptionMethod)
{
$encryptionMethod = (int) $encryptionMethod;
if (!self::hasEncryptionMethod($encryptionMethod)) {
throw new InvalidArgumentException(sprintf(
'Encryption method %d is not supported.',
$encryptionMethod
));
}
}
}