Java Requires Chilkat v11.7.0+

Remove the Password and Encryption from a PDF

See more PDF Protection Examples

Demonstrates the removeEncryption operation, which saves the PDF with no encryption at all: no password, no restrictions. It needs owner rights, so the PDF is loaded with its owner password. As with every Protection operation, the change is applied when the file is written. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Pdf;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // The PDF used in this example is available at encrypted_user_password.pdf

        Pdf pdf = new Pdf();

        // Removing the encryption needs owner rights: load with the owner password.
        pdf.setOwnerPassword("owner-secret");
        try {
            pdf.loadFile("qa_data/pdf/encrypted_user_password.pdf");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        JsonObject json = new JsonObject();
        JsonObject jsonOut = new JsonObject();
        try {
            pdf.protection("getInfo", json, jsonOut);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("encrypted, as loaded: " + jsonOut.boolOf("loaded.encrypted"));
        System.out.println("algorithm: " + jsonOut.stringOf("loaded.algorithm"));

        try {
            pdf.protection("removeEncryption", json, jsonOut);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("will be saved encrypted: " + jsonOut.boolOf("pending.encrypted"));

        try {
            pdf.writeFile("qa_output/minutes_unprotected.pdf");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // The result is an ordinary PDF that opens without a password.
        Pdf reader = new Pdf();
        JsonObject info = new JsonObject();
        try {
            reader.preLoadCheck("qa_output/minutes_unprotected.pdf", info);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("encrypted: " + info.boolOf("encrypted"));
        try {
            reader.loadFile("qa_output/minutes_unprotected.pdf");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("pages: " + reader.getNumPages());

        // Sample output:

        // encrypted, as loaded: True
        // algorithm: rc4-128
        // will be saved encrypted: False
        // encrypted: False
        // pages: 1
    }
}