Unzip an AES Encrypted Text File directly into a String Variable

A common need is to unzip from an AES encrypted Zip archive directly into a string variable, such that the unencrypted file never resides on disk, even temporarily. This example shows how to do it.

Download Chilkat Java Library

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;
    }

    //  This example opens a WinZip-compatible AES encrypted
    //  .zip that contains a single file: hamlet.xml.

    //  It decrypts and unzips hamlet.xml directly into a string
    //  variable.
    zip.SetPassword("secret");
    success = zip.OpenZip("hamlet.zip");
    if (success != true) {
        System.out.println(zip.lastErrorText());
        return;
    }

    CkZipEntry entry;
    String xmlText;

    entry = zip.GetEntryByName("hamlet.xml");
    if (!(entry == null )) {
        xmlText = entry.inflateToString2();
        System.out.println(xmlText);

    }
    else {
        System.out.println("Failed to find entry in zip");
    }


  }
}