Verify a Zip's Password

Demonstrates how to verify the password for an encrypted or password-protected zip archive.

Download Chilkat Java Library

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    CkZip zip = new CkZip();

    boolean success;

    //  Any string unlocks the component for the 1st 30-days.
    success = zip.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println(zip.lastErrorText());
        return;
    }

    //  To verify a password for a Zip, the Zip must be opened:
    success = zip.OpenZip("myProtected.zip");
    if (success != true) {
        System.out.println(zip.lastErrorText());
        return;
    }

    //  Set the password to be verified:
    zip.put_DecryptPassword("secret");

    boolean passwordOk;
    passwordOk = zip.VerifyPassword();
    if (passwordOk == true) {
        System.out.println("Password is correct.");
    }
    else {
        System.out.println("Password is incorrect.");
    }

    zip.CloseZip();

  }
}