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(PHP ActiveX) Open a Zip ArchiveSee more Zip ExamplesDemonstrates how to open a zip, or an encrypted .zip, or a legacy password-protected .zip.
<?php $zip = new COM("Chilkat_9_5_0.Zip"); // Open a non-encrypted .zip $success = $zip->OpenZip('qa_data/zips/sample.zip'); if ($success != 1) { print $zip->LastErrorText . "\n"; exit; } print 'Num entries = ' . $zip->NumEntries . "\n"; // ... // ... $zip->CloseZip(); // ---------------------------------------------------------------------------- // Open an encrypted zip... // The two main types of encryption used in ZIP archives are Password-Protected and AES. // // --------------------------------------- // 1. Legacy Password-Protected Zip // // This is the older and less secure method of encrypting ZIP archives. // It provides a basic level of security, but is considered weak by modern standards. // It is vulnerable to various attacks, including known-plaintext attacks and brute force attacks. // Although Chilkat allows it, you shouldn't create new zip archives using legacy password-protection. // --------------------------------------- // 2. AES Encrypted Zip // // AES encryption is a more modern and secure method for encrypting ZIP archives. // It provides strong encryption based on the AES algorithm, which is widely regarded as secure. // AES supports different key lengths, typically 128-bit, 192-bit, and 256-bit. // When opening an encrypted zip, your application only needs to provide the correct password. // The information about the type of encryption and the key length (if AES) is already embedded within the encrypted .zip. // Provide the decrypt password because we are opening an existing .zip (decrypting) $zip->DecryptPassword = 'thePassword'; $success = $zip->OpenZip('qa_data/zips/encryptedSamples/ziptest_256.zip'); if ($success != 1) { print $zip->LastErrorText . "\n"; exit; } print 'Num entries = ' . $zip->NumEntries . "\n"; // ... // ... $zip->CloseZip(); ?> |
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