Node.js

Open a Zip Archive

See more Zip Examples

Demonstrates how to open a zip, or an encrypted .zip, or a legacy password-protected .zip. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    var zip = new chilkat.Zip();

    //  Open a non-encrypted .zip
    success = zip.OpenZip("qa_data/zips/sample.zip");
    if (success !== true) {
        console.log(zip.LastErrorText);
        return;
    }

    console.log("Num entries = " + zip.NumEntries);

    //  ...
    //  ...

    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 !== true) {
        console.log(zip.LastErrorText);
        return;
    }

    console.log("Num entries = " + zip.NumEntries);

    //  ...
    //  ...

    zip.CloseZip();

}

chilkatExample();