Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;

import java.math.BigInteger;

import java.security.*;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.RSAPublicKeySpec;

public class Main {
    public static byte[] getRSAEncryptedData(byte[] dataWithHash) {
        BigInteger modulus = new BigInteger(
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
                16);
        BigInteger pubExp = new BigInteger("010001", 16);

        KeyFactory keyFactory = null;
        try {
            keyFactory = KeyFactory.getInstance("RSA");
            RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(modulus, pubExp);
            RSAPublicKey key = (RSAPublicKey) keyFactory.generatePublic(pubKeySpec);

            Cipher cipher = Cipher.getInstance("RSA/ECB/NoPadding");
            cipher.init(Cipher.ENCRYPT_MODE, key);
            byte[] cipherData = cipher.doFinal(dataWithHash);
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
        } catch (InvalidKeyException e) {
            e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
        } catch (BadPaddingException e) {
            e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
        } catch (InvalidKeySpecException e) {
            e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
        } catch (NoSuchPaddingException e) {
            e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
        }
        return null;
    }
}