be.e_contract.mycarenet.certra.CertRASession.java Source code

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Here is the source code for be.e_contract.mycarenet.certra.CertRASession.java

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/*
 * Java MyCareNet Project.
 * Copyright (C) 2016 e-Contract.be BVBA.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version
 * 3.0 as published by the Free Software Foundation.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, see 
 * http://www.gnu.org/licenses/.
 */

package be.e_contract.mycarenet.certra;

import java.io.IOException;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.spec.RSAKeyGenParameterSpec;

import org.bouncycastle.asn1.x500.X500Name;
import org.bouncycastle.operator.ContentSigner;
import org.bouncycastle.operator.OperatorCreationException;
import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
import org.bouncycastle.pkcs.PKCS10CertificationRequest;
import org.bouncycastle.pkcs.PKCS10CertificationRequestBuilder;
import org.bouncycastle.pkcs.jcajce.JcaPKCS10CertificationRequestBuilder;

public class CertRASession {

    private final PrivateKey privateKey;

    private final PublicKey publicKey;

    private final String emailPrivate;

    private final String phonePrivate;

    public CertRASession(String emailPrivate, String phonePrivate) throws Exception {
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        RSAKeyGenParameterSpec params = new RSAKeyGenParameterSpec(2048, RSAKeyGenParameterSpec.F4);

        SecureRandom secureRandom = new SecureRandom();
        secureRandom.setSeed(System.currentTimeMillis());

        keyPairGenerator.initialize(params, secureRandom);
        KeyPair keyPair = keyPairGenerator.genKeyPair();

        this.privateKey = keyPair.getPrivate();
        this.publicKey = keyPair.getPublic();

        this.emailPrivate = emailPrivate;
        this.phonePrivate = phonePrivate;
    }

    public byte[] generateCSR(X500Name name) throws OperatorCreationException, IOException {
        PKCS10CertificationRequestBuilder csrBuilder = new JcaPKCS10CertificationRequestBuilder(name,
                this.publicKey);
        JcaContentSignerBuilder csBuilder = new JcaContentSignerBuilder("SHA256withRSA");
        ContentSigner signer = csBuilder.build(this.privateKey);
        PKCS10CertificationRequest csr = csrBuilder.build(signer);
        return csr.getEncoded();
    }
}