Using PGP to encrypt a file using Java

Hi all,

Appreciate if someone can guide me on how to use PGP to encrypt a file using Java.

I am unable to access the following site (which most experts have recommended)
http://www.cryptography.ch/tiki-page?pageName=pgpjava_download

i guess the link is no longer valid.

hopefully someone can give me some guidance on this.

Thanks in advance :)

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The code is using JNI technology, which means the encryption part is in C,C++ code and you have to compile the code using make command (on linux) or any C compiler if you have modify something in the C,C++ code. You will get a new version of dll file for use.

However, you don't need to compile the code because there is a binary file for download (pgpajava.zip).
You need 4 files in the same directory of your class:
pgpi.dll
PGPi.class
pubring.pgp
secring.pgp

// Test.java

public class Test
{
    public static void main(String[] args) 
    {
        PGPi pgp = new PGPi();
        // You will get 2 output files, secring.bak and pubring.bak
        int error = pgp.generateKey("randomstring",1024,"myname","secretkey");
        if(error != 0) {
            System.out.println("Cannot generate key: "+pgp.getErrorMsg(error));
            return;
        }
        // You will get encrypted file named data.pgp
        error = pgp.encrypt("","data.txt");
        if(error != 0) {
            System.out.println("Cannot encrypt file: "+pgp.getErrorMsg(error));
            return;
        }
        // You will get decrypted file named data.clr
        error = pgp.decrypt("data.pgp","secretkey");
        if(error != 0) {
            System.out.println("Cannot decrypt file: "+pgp.getErrorMsg(error));
            return;
        }
    }
}

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Using PGP to encrypt a file using Java

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