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<?php |
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namespace Olssonm\BackupShield; |
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use PhpZip\ZipFile; |
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use \ZipArchive; |
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class Encryption |
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{ |
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/** |
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* Default encryption contants |
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* |
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* @var string |
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*/ |
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const ENCRYPTION_DEFAULT = 'default'; |
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/** |
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* AES-128 encryption contants |
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* |
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* @var string |
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*/ |
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const ENCRYPTION_WINZIP_AES_128 = 'aes_128'; |
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/** |
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* AES-192 encryption contants |
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* |
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* @var string |
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*/ |
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const ENCRYPTION_WINZIP_AES_192 = 'aes_192'; |
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/** |
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* AES-256 encryption contants |
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* |
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* @var string |
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*/ |
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const ENCRYPTION_WINZIP_AES_256 = 'aes_256'; |
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/** |
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* ZipArchive encryption constants; stores as simple string for PHP < 7.2 |
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* backwards compatability |
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* |
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* @var array |
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*/ |
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private $zipArchiveOptions = [ |
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self::ENCRYPTION_DEFAULT => '257', |
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self::ENCRYPTION_WINZIP_AES_128 => '257', |
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self::ENCRYPTION_WINZIP_AES_192 => '258', |
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self::ENCRYPTION_WINZIP_AES_256 => '259', |
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]; |
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/** |
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* ZipFile encryption constants |
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* |
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* @var array |
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*/ |
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private $zipFileOptions = [ |
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self::ENCRYPTION_DEFAULT => ZipFile::ENCRYPTION_METHOD_TRADITIONAL, |
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self::ENCRYPTION_WINZIP_AES_128 => ZipFile::ENCRYPTION_METHOD_WINZIP_AES_128, |
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self::ENCRYPTION_WINZIP_AES_192 => ZipFile::ENCRYPTION_METHOD_WINZIP_AES_192, |
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self::ENCRYPTION_WINZIP_AES_256 => ZipFile::ENCRYPTION_METHOD_WINZIP_AES_256, |
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]; |
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/** |
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* Retrive appropriate encryption constant |
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* |
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* @param string $type |
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* @param string $engine |
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* @return mixed |
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*/ |
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public function getEncryptionConstant($type, $engine) |
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{ |
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if ($engine == 'ZipArchive' && isset($this->zipArchiveOptions[$type])) { |
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return $this->zipArchiveOptions[$type]; |
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} elseif ($engine == 'ZipFile' && isset($this->zipFileOptions[$type])) { |
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return $this->zipFileOptions[$type]; |
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} else { |
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throw new \Exception("Encryption key not set or invalid value", 1); |
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} |
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} |
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} |
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olssonm /
laravel-backup-shield
