Examples with PublicKey net.i2p.data.PublicKey used on opensource projects

Example 1 with PublicKey

use of net.i2p.data.PublicKey in project i2p.i2p by i2p.

the class I2PSocketManagerFull method addSubsession.

/**
 *  For a server, you must call connect() on the returned object.
 *  Connecting the primary session does NOT connect any subsessions.
 *  If the primary session is not connected, connecting a subsession will connect the primary session first.
 *
 *  @return a new subsession, non-null
 *  @param privateKeyStream null for transient, if non-null must have same encryption keys as primary session
 *                          and different signing keys
 *  @param opts subsession options if any, may be null
 *  @since 0.9.21
 */
public I2PSession addSubsession(InputStream privateKeyStream, Properties opts) throws I2PSessionException {
    if (privateKeyStream == null) {
        // We don't actually need the same pubkey in the dest, just in the LS.
        // The dest one is unused. But this is how we find the LS keys
        // to reuse in RequestLeaseSetMessageHandler.
        ByteArrayOutputStream keyStream = new ByteArrayOutputStream(1024);
        try {
            SigType type = getSigType(opts);
            if (type != SigType.DSA_SHA1) {
                // hassle, have to set up the padding and cert, see I2PClientImpl
                throw new I2PSessionException("type " + type + " unsupported");
            }
            PublicKey pub = _session.getMyDestination().getPublicKey();
            PrivateKey priv = _session.getDecryptionKey();
            SimpleDataStructure[] keys = _context.keyGenerator().generateSigningKeys(type);
            pub.writeBytes(keyStream);
            // signing pub
            keys[0].writeBytes(keyStream);
            Certificate.NULL_CERT.writeBytes(keyStream);
            priv.writeBytes(keyStream);
            // signing priv
            keys[1].writeBytes(keyStream);
        } catch (GeneralSecurityException e) {
            throw new I2PSessionException("Error creating keys", e);
        } catch (I2PException e) {
            throw new I2PSessionException("Error creating keys", e);
        } catch (IOException e) {
            throw new I2PSessionException("Error creating keys", e);
        } catch (RuntimeException e) {
            throw new I2PSessionException("Error creating keys", e);
        }
        privateKeyStream = new ByteArrayInputStream(keyStream.toByteArray());
    }
    I2PSession rv = _session.addSubsession(privateKeyStream, opts);
    boolean added = _subsessions.add(rv);
    if (!added) {
        // shouldn't happen
        _session.removeSubsession(rv);
        throw new I2PSessionException("dup");
    }
    ConnectionOptions defaultOptions = new ConnectionOptions(opts);
    int protocol = defaultOptions.getEnforceProtocol() ? I2PSession.PROTO_STREAMING : I2PSession.PROTO_ANY;
    rv.addMuxedSessionListener(_connectionManager.getMessageHandler(), protocol, defaultOptions.getLocalPort());
    if (_log.shouldLog(Log.WARN))
        _log.warn("Added subsession " + rv);
    return rv;
}

Example 2 with PublicKey

use of net.i2p.data.PublicKey in project i2p.i2p by i2p.

the class I2PClientImpl method createDestination.

/**
 * Create the destination with the given payload and write it out along with
 * the PrivateKey and SigningPrivateKey to the destKeyStream
 *
 * If cert is a KeyCertificate, the signing keypair will be of the specified type.
 * The KeyCertificate data must be .............................
 * The padding if any will be randomized. The extra key data if any will be set in the
 * key cert.
 *
 * Caller must close stream.
 *
 * @param destKeyStream location to write out the destination, PrivateKey, and SigningPrivateKey,
 *                      format is specified in {@link net.i2p.data.PrivateKeyFile PrivateKeyFile}
 */
public Destination createDestination(OutputStream destKeyStream, Certificate cert) throws I2PException, IOException {
    Destination d = new Destination();
    Object[] keypair = KeyGenerator.getInstance().generatePKIKeypair();
    PublicKey publicKey = (PublicKey) keypair[0];
    PrivateKey privateKey = (PrivateKey) keypair[1];
    SimpleDataStructure[] signingKeys;
    if (cert.getCertificateType() == Certificate.CERTIFICATE_TYPE_KEY) {
        KeyCertificate kcert = cert.toKeyCertificate();
        SigType type = kcert.getSigType();
        try {
            signingKeys = KeyGenerator.getInstance().generateSigningKeys(type);
        } catch (GeneralSecurityException gse) {
            throw new I2PException("keygen fail", gse);
        }
    } else {
        signingKeys = KeyGenerator.getInstance().generateSigningKeys();
    }
    SigningPublicKey signingPubKey = (SigningPublicKey) signingKeys[0];
    SigningPrivateKey signingPrivKey = (SigningPrivateKey) signingKeys[1];
    d.setPublicKey(publicKey);
    d.setSigningPublicKey(signingPubKey);
    if (cert.getCertificateType() == Certificate.CERTIFICATE_TYPE_KEY) {
        // fix up key certificate or padding
        KeyCertificate kcert = cert.toKeyCertificate();
        SigType type = kcert.getSigType();
        int len = type.getPubkeyLen();
        if (len < 128) {
            byte[] pad = new byte[128 - len];
            RandomSource.getInstance().nextBytes(pad);
            d.setPadding(pad);
        } else if (len > 128) {
            System.arraycopy(signingPubKey.getData(), 128, kcert.getPayload(), KeyCertificate.HEADER_LENGTH, len - 128);
        }
    }
    d.setCertificate(cert);
    d.writeBytes(destKeyStream);
    privateKey.writeBytes(destKeyStream);
    signingPrivKey.writeBytes(destKeyStream);
    destKeyStream.flush();
    return d;
}

Example 3 with PublicKey

use of net.i2p.data.PublicKey in project i2p.i2p by i2p.

the class KeyGenerator method generatePKIKeys.

/**
 *  Same as above but different return type
 *  @since 0.8.7
 */
public SimpleDataStructure[] generatePKIKeys() {
    BigInteger a = new NativeBigInteger(getElGamalExponentSize(), _context.random());
    BigInteger aalpha = CryptoConstants.elgg.modPow(a, CryptoConstants.elgp);
    SimpleDataStructure[] keys = new SimpleDataStructure[2];
    keys[0] = new PublicKey();
    keys[1] = new PrivateKey();
    try {
        keys[0].setData(SigUtil.rectify(aalpha, PublicKey.KEYSIZE_BYTES));
        keys[1].setData(SigUtil.rectify(a, PrivateKey.KEYSIZE_BYTES));
    } catch (InvalidKeyException ike) {
        throw new IllegalArgumentException(ike);
    }
    return keys;
}

Example 4 with PublicKey

use of net.i2p.data.PublicKey in project i2p.i2p by i2p.

the class ElGamalTest method testElGamalEngine.

public void testElGamalEngine() {
    int numRuns = 10;
    RandomSource.getInstance().nextBoolean();
    I2PAppContext context = I2PAppContext.getGlobalContext();
    for (int i = 0; i < numRuns; i++) {
        Object[] pair = KeyGenerator.getInstance().generatePKIKeypair();
        PublicKey pubkey = (PublicKey) pair[0];
        PrivateKey privkey = (PrivateKey) pair[1];
        byte[] buf = new byte[128];
        RandomSource.getInstance().nextBytes(buf);
        byte[] encr = context.elGamalEngine().encrypt(buf, pubkey);
        byte[] decr = context.elGamalEngine().decrypt(encr, privkey);
        assertTrue(DataHelper.eq(decr, buf));
    }
}

Example 5 with PublicKey

use of net.i2p.data.PublicKey in project i2p.i2p by i2p.

the class ElGamalTest method testElGamalAESEngine.

public void testElGamalAESEngine() throws Exception {
    I2PAppContext ctx = I2PAppContext.getGlobalContext();
    ElGamalAESEngine e = new ElGamalAESEngine(ctx);
    Object[] kp = ctx.keyGenerator().generatePKIKeypair();
    PublicKey pubKey = (PublicKey) kp[0];
    PrivateKey privKey = (PrivateKey) kp[1];
    SessionKey sessionKey = ctx.keyGenerator().generateSessionKey();
    for (int i = 0; i < 10; i++) {
        Set<SessionTag> tags = new HashSet<SessionTag>(5);
        if (i == 0) {
            for (int j = 0; j < 5; j++) tags.add(new SessionTag(true));
        }
        byte[] encrypted = e.encrypt(DataHelper.getASCII("blah"), pubKey, sessionKey, tags, null, 1024);
        byte[] decrypted = e.decrypt(encrypted, privKey, _context.sessionKeyManager());
        assertEquals("blah", new String(decrypted));
        ctx.sessionKeyManager().tagsDelivered(pubKey, sessionKey, tags);
    }
}