nl.open.jwtdependency.org.bouncycastle.crypto.test.RSAKeyEncapsulationTest Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of java-jwt-nodependencies Show documentation

This is a drop in replacement for the auth0 java-jwt library (see https://github.com/auth0/java-jwt). This jar makes sure there are no external dependencies (e.g. fasterXml, Apacha Commons) needed. This is useful when deploying to an application server (e.g. tomcat with Alfreso or Pega).

The newest version!

package org.bouncycastle.crypto.test;

import java.math.BigInteger;
import java.security.SecureRandom;

import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import org.bouncycastle.crypto.digests.SHA1Digest;
import org.bouncycastle.crypto.generators.KDF2BytesGenerator;
import org.bouncycastle.crypto.generators.RSAKeyPairGenerator;
import org.bouncycastle.crypto.kems.RSAKeyEncapsulation;
import org.bouncycastle.crypto.params.KeyParameter;
import org.bouncycastle.crypto.params.RSAKeyGenerationParameters;
import org.bouncycastle.util.test.SimpleTest;

/**
 * Tests for the RSA Key Encapsulation Mechanism
 */
public class RSAKeyEncapsulationTest
    extends SimpleTest
{
    public String getName()
    {
        return "RSAKeyEncapsulation";
    }

    public void performTest()
        throws Exception
    {
        // Generate RSA key pair
        RSAKeyPairGenerator        rsaGen = new RSAKeyPairGenerator();
        rsaGen.init(new RSAKeyGenerationParameters(BigInteger.valueOf(65537), new SecureRandom(), 1024, 5));
        AsymmetricCipherKeyPair    keys   = rsaGen.generateKeyPair();
        
        // Set RSA-KEM parameters
        RSAKeyEncapsulation     kem;
        KDF2BytesGenerator        kdf = new KDF2BytesGenerator(new SHA1Digest());
        SecureRandom            rnd = new SecureRandom();
        byte[]                    out = new byte[128];
        KeyParameter            key1, key2;
        
        // Test RSA-KEM
        kem = new RSAKeyEncapsulation(kdf, rnd);
        
        kem.init(keys.getPublic());
        key1 = (KeyParameter)kem.encrypt(out, 128);
        
        kem.init(keys.getPrivate());
        key2 = (KeyParameter)kem.decrypt(out, 128);

        if (!areEqual(key1.getKey(), key2.getKey()))
        {
            fail("failed test");
        }
    }

    public static void main(
        String[]    args)
    {
        runTest(new RSAKeyEncapsulationTest());
    }
}