Example usage for org.bouncycastle.openpgp PGPKeyRingGenerator addSubKey

Introduction

In this page you can find the example usage for org.bouncycastle.openpgp PGPKeyRingGenerator addSubKey.

Prototype

public void addSubKey(PGPKeyPair keyPair, PGPSignatureSubpacketVector hashedPcks,
        PGPSignatureSubpacketVector unhashedPcks) throws PGPException 

Source Link

Document

Add a subkey with specific hashed and unhashed packets associated with it and default certification.

Usage

From source file:keygenerator.KeyGenerator.java

public final static PGPKeyRingGenerator generateKeyRingGenerator(String id, char[] pass, int s2kcount)
        throws Exception {
    // This object generates individual key-pairs.
    RSAKeyPairGenerator kpg = new RSAKeyPairGenerator();

    // Boilerplate RSA parameters, no need to change anything
    // except for the RSA key-size (2048). You can use whatever
    // key-size makes sense for you -- 4096, etc.
    kpg.init(new RSAKeyGenerationParameters(BigInteger.valueOf(0x10001), new SecureRandom(), 2048, 12));

    // First create the master (signing) key with the generator.
    PGPKeyPair rsakp_sign = new BcPGPKeyPair(PGPPublicKey.RSA_SIGN, kpg.generateKeyPair(), new Date());
    // Then an encryption subkey.
    PGPKeyPair rsakp_enc = new BcPGPKeyPair(PGPPublicKey.RSA_ENCRYPT, kpg.generateKeyPair(), new Date());

    // Add a self-signature on the id
    PGPSignatureSubpacketGenerator signhashgen = new PGPSignatureSubpacketGenerator();

    // Add signed metadata on the signature.
    // 1) Declare its purpose
    signhashgen.setKeyFlags(false, KeyFlags.SIGN_DATA | KeyFlags.CERTIFY_OTHER);
    // 2) Set preferences for secondary crypto algorithms to use
    //    when sending messages to this key.
    signhashgen.setPreferredSymmetricAlgorithms(false, new int[] { SymmetricKeyAlgorithmTags.AES_256,
            SymmetricKeyAlgorithmTags.AES_192, SymmetricKeyAlgorithmTags.AES_128 });
    signhashgen.setPreferredHashAlgorithms(false, new int[] { HashAlgorithmTags.SHA256, HashAlgorithmTags.SHA1,
            HashAlgorithmTags.SHA384, HashAlgorithmTags.SHA512, HashAlgorithmTags.SHA224, });
    // 3) Request senders add additional checksums to the
    //    message (useful when verifying unsigned messages.)
    signhashgen.setFeature(false, Features.FEATURE_MODIFICATION_DETECTION);

    // Create a signature on the encryption subkey.
    PGPSignatureSubpacketGenerator enchashgen = new PGPSignatureSubpacketGenerator();
    // Add metadata to declare its purpose
    enchashgen.setKeyFlags(false, KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE);

    // Objects used to encrypt the secret key.
    PGPDigestCalculator sha1Calc = new BcPGPDigestCalculatorProvider().get(HashAlgorithmTags.SHA1);
    PGPDigestCalculator sha256Calc = new BcPGPDigestCalculatorProvider().get(HashAlgorithmTags.SHA256);

    // bcpg 1.48 exposes this API that includes s2kcount. Earlier
    // versions use a default of 0x60.
    PBESecretKeyEncryptor pske = (new BcPBESecretKeyEncryptorBuilder(PGPEncryptedData.AES_256, sha256Calc,
            s2kcount)).build(pass);//ww  w .j  a  v a2  s .c o  m

    // Finally, create the keyring itself. The constructor
    // takes parameters that allow it to generate the self
    // signature.

    BcPGPContentSignerBuilder signerBuilder = new BcPGPContentSignerBuilder(
            rsakp_sign.getPublicKey().getAlgorithm(), HashAlgorithmTags.SHA1);

    PGPKeyRingGenerator keyRingGen;
    keyRingGen = new PGPKeyRingGenerator(PGPSignature.POSITIVE_CERTIFICATION, rsakp_sign, id, sha1Calc,
            signhashgen.generate(), null, signerBuilder, pske);

    // Add our encryption subkey, together with its signature.
    keyRingGen.addSubKey(rsakp_enc, enchashgen.generate(), null);
    return keyRingGen;
}

---

From source file:org.tramaci.onionmail.PGPKeyGen.java

License:Open Source License

public static PGPKeyRingGenerator generateKeyRingGenerator(String id, char[] pass, int s2kcount, int nBits,
        int certainty, Date when) throws Exception {

    RSAKeyPairGenerator kpg = new RSAKeyPairGenerator();
    RSAKeyGenerationParameters kgp = new RSAKeyGenerationParameters(DEFAULT_PUBEXP, new SecureRandom(), nBits,
            certainty);//from  ww  w .j a  v  a2 s.co m
    kpg.init(kgp);
    PGPKeyPair rsakpSign = new BcPGPKeyPair(PGPPublicKey.RSA_SIGN, kpg.generateKeyPair(), when);
    PGPKeyPair rsakpEnc = new BcPGPKeyPair(PGPPublicKey.RSA_ENCRYPT, kpg.generateKeyPair(), when);
    PGPSignatureSubpacketGenerator signhashgen = new PGPSignatureSubpacketGenerator();

    signhashgen.setKeyFlags(false, KeyFlags.SIGN_DATA | KeyFlags.CERTIFY_OTHER);

    signhashgen.setPreferredSymmetricAlgorithms(false,
            new int[] { SymmetricKeyAlgorithmTags.CAST5, SymmetricKeyAlgorithmTags.AES_256,
                    SymmetricKeyAlgorithmTags.AES_192, SymmetricKeyAlgorithmTags.TWOFISH,
                    SymmetricKeyAlgorithmTags.AES_128 });

    signhashgen.setPreferredHashAlgorithms(false, new int[] { HashAlgorithmTags.SHA256, HashAlgorithmTags.SHA1,
            HashAlgorithmTags.SHA384, HashAlgorithmTags.SHA512, HashAlgorithmTags.SHA224 });

    signhashgen.setFeature(false, Features.FEATURE_MODIFICATION_DETECTION);
    PGPSignatureSubpacketGenerator enchashgen = new PGPSignatureSubpacketGenerator();
    enchashgen.setKeyFlags(false, KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE);

    PGPDigestCalculator sha256Calc = new BcPGPDigestCalculatorProvider().get(HashAlgorithmTags.SHA256);
    PGPDigestCalculator sha1Calc = new BcPGPDigestCalculatorProvider().get(HashAlgorithmTags.SHA1);

    PBESecretKeyEncryptor pske = (new BcPBESecretKeyEncryptorBuilder(PGPEncryptedData.AES_256, sha256Calc,
            s2kcount)).build(pass);

    PGPKeyRingGenerator keyRingGen = new PGPKeyRingGenerator(PGPSignature.POSITIVE_CERTIFICATION, rsakpSign, id,
            sha1Calc, signhashgen.generate(), null,
            new BcPGPContentSignerBuilder(rsakpSign.getPublicKey().getAlgorithm(), HashAlgorithmTags.SHA1),
            pske);

    keyRingGen.addSubKey(rsakpEnc, enchashgen.generate(), null);
    return keyRingGen;
}

---