VrL6KSBx

1package com.helloit.main;
2
3import org.bouncycastle.bcpg.ArmoredOutputStream;
4import org.bouncycastle.bcpg.HashAlgorithmTags;
5import org.bouncycastle.jce.provider.BouncyCastleProvider;
6import org.bouncycastle.openpgp.*;
7import org.bouncycastle.openpgp.operator.PGPDigestCalculator;
8import org.bouncycastle.openpgp.operator.jcajce.JcaPGPContentSignerBuilder;
9import org.bouncycastle.openpgp.operator.jcajce.JcaPGPDigestCalculatorProviderBuilder;
10import org.bouncycastle.openpgp.operator.jcajce.JcaPGPKeyPair;
11import org.bouncycastle.openpgp.operator.jcajce.JcePBESecretKeyEncryptorBuilder;
12
13import java.io.FileOutputStream;
14import java.io.IOException;
15import java.io.OutputStream;
16import java.security.*;
17import java.util.Date;
18
19/**
20 */
21
22public class KeyGenerator {
23
24    private static void exportKeyPair(OutputStream secretOut, OutputStream publicOut, KeyPair pair,
25                                      String identity, char[] passPhrase, boolean armor)
26            throws IOException, InvalidKeyException, NoSuchProviderException, SignatureException, PGPException {
27        if (armor) {
28            secretOut = new ArmoredOutputStream(secretOut);
29        }
30
31        PGPDigestCalculator sha1Calc = new JcaPGPDigestCalculatorProviderBuilder().build().get(HashAlgorithmTags.SHA1);
32        PGPKeyPair keyPair = new JcaPGPKeyPair(PGPPublicKey.RSA_GENERAL, pair, new Date());
33        PGPSecretKey secretKey = new PGPSecretKey(PGPSignature.DEFAULT_CERTIFICATION, keyPair, identity, sha1Calc, null, null,
34                new JcaPGPContentSignerBuilder(keyPair.getPublicKey().getAlgorithm(), HashAlgorithmTags.SHA1),
35                new JcePBESecretKeyEncryptorBuilder(PGPEncryptedData.CAST5, sha1Calc).setProvider("BC").build(passPhrase));
36
37        secretKey.encode(secretOut);
38
39        secretOut.close();
40
41        if (armor) {
42            publicOut = new ArmoredOutputStream(publicOut);
43        }
44
45        PGPPublicKey key = secretKey.getPublicKey();
46
47        key.encode(publicOut);
48
49        publicOut.close();
50    }
51
52    public static void main(String[] args) throws Exception {
53        Security.addProvider(new BouncyCastleProvider());
54
55        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", "BC");
56
57        kpg.initialize(2048);
58
59        KeyPair kp = kpg.generateKeyPair();
60
61        FileOutputStream out1 = new FileOutputStream("/Users/aronsinoai/Downloads/secret.asc");
62        FileOutputStream out2 = new FileOutputStream("/Users/aronsinoai/Downloads/pub.asc");
63
64        String identity = "webmaster@zzz.com";
65        char[] passPhrase = {'h', 'e', 'l', 'l', 'o'};
66        exportKeyPair(out1, out2, kp, identity, passPhrase, true);
67    }
68
69}