PgpPainlessUtil

This utility class is a wrapper for PGPainless implementation. In this utility class I cover the bellow usecases

• encryptString
• decryptString
• encryptFile
• decryptFile

In the PgpPainlessUtil class you can find the method comments on how to use this utility class

How to use

If you dont have keys generated, run the CreateKeys class. it will generate the keys for you and can be found at the resources directory.

once you have the keys generated you can run any of the above-mentioned methods as in Main class or FileMainEncrypt class.

below is a snippet from Main class where encryption and decryption happen for a text.

public static void main(String[] args) {

        try (InputStream ourKey = Thread.currentThread().getContextClassLoader().getResourceAsStream("ourKey");
             InputStream theirKey = Thread.currentThread().getContextClassLoader().getResourceAsStream("theirKey")) {

            assert ourKey != null;
            PGPSecretKeyRing secretKeys = PGPainless.readKeyRing().secretKeyRing(ourKey);

            assert theirKey != null;
            PGPSecretKeyRing pk = PGPainless.readKeyRing().secretKeyRing(theirKey);

            assert secretKeys != null;
            assert pk != null;
            String cypherText = PgpPainlessUtil.encryptString("this is plainText",
                    secretKeys.getEncoded(), pk.getPublicKey().getEncoded());

            System.out.println(cypherText);

            String plainText = PgpPainlessUtil.decryptstring(cypherText, pk.getEncoded(),
                    secretKeys.getPublicKey().getEncoded());

            System.out.println(plainText);

        } catch (Exception e) {
            e.printStackTrace();
        }

    }