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

Example 26 with SessionKey

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

the class MessageWrapper method wrap.

/**
 *  Garlic wrap a message from nobody, destined for a router,
 *  to hide the contents from the OBEP.
 *  Forces ElGamal.
 *
 *  @return null on encrypt failure
 *  @since 0.9.5
 */
static GarlicMessage wrap(RouterContext ctx, I2NPMessage m, RouterInfo to) {
    PayloadGarlicConfig payload = new PayloadGarlicConfig();
    payload.setCertificate(Certificate.NULL_CERT);
    payload.setId(ctx.random().nextLong(I2NPMessage.MAX_ID_VALUE));
    payload.setPayload(m);
    payload.setRecipient(to);
    payload.setDeliveryInstructions(DeliveryInstructions.LOCAL);
    payload.setExpiration(m.getMessageExpiration());
    SessionKey sentKey = ctx.keyGenerator().generateSessionKey();
    PublicKey key = to.getIdentity().getPublicKey();
    GarlicMessage msg = GarlicMessageBuilder.buildMessage(ctx, payload, null, null, key, sentKey, null);
    return msg;
}

Example 27 with SessionKey

use of net.i2p.data.SessionKey in project i2p.i2p-bote by i2p.

the class Util method encrypt.

/**
 * Encrypts data with an I2P public key
 */
public static byte[] encrypt(byte[] data, PublicKey key) {
    I2PAppContext appContext = I2PAppContext.getGlobalContext();
    SessionKeyManager sessionKeyMgr = new net.i2p.crypto.SessionKeyManager(appContext) {
    };
    SessionKey sessionKey = sessionKeyMgr.createSession(key);
    return appContext.elGamalAESEngine().encrypt(data, key, sessionKey, null, null, null, 0);
}

Example 28 with SessionKey

use of net.i2p.data.SessionKey in project i2p.i2p-bote by i2p.

the class EncryptedOutputStream method encryptAndWrite.

/**
 * Writes the header, then encrypts the internal buffer and writes the encrypted
 * data to the underlying <code>OutputStream</code>.
 * @throws IOException
 */
// for net.i2p.crypto.AESEngine
@SuppressWarnings("deprecation")
private void encryptAndWrite() throws IOException {
    downstream.write(START_OF_FILE);
    downstream.write(FORMAT_VERSION);
    FileEncryptionConstants.KDF_PARAMETERS.writeTo(downstream);
    downstream.write(derivedKey.salt);
    byte[] iv = new byte[BLOCK_SIZE];
    I2PAppContext appContext = I2PAppContext.getGlobalContext();
    appContext.random().nextBytes(iv);
    downstream.write(iv);
    byte[] data = outputBuffer.toByteArray();
    SessionKey key = new SessionKey(derivedKey.key);
    byte[] encryptedData = appContext.aes().safeEncrypt(data, key, iv, 0);
    downstream.write(encryptedData);
}

Example 29 with SessionKey

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

the class ConfigKeyringHandler method processForm.

@Override
protected void processForm() {
    if (_action == null)
        return;
    boolean adding = _action.equals(_t("Add key"));
    if (adding || _action.equals(_t("Delete key"))) {
        if (_peer == null)
            addFormError(_t("You must enter a destination"));
        if (_key == null && adding)
            addFormError(_t("You must enter a key"));
        if (_peer == null || (_key == null && adding))
            return;
        Hash h = ConvertToHash.getHash(_peer);
        if (adding) {
            SessionKey sk = new SessionKey();
            try {
                sk.fromBase64(_key);
            } catch (DataFormatException dfe) {
            }
            if (h == null || h.getData() == null) {
                addFormError(_t("Invalid destination"));
            } else if (_context.clientManager().isLocal(h)) {
                // don't bother translating
                addFormError("Cannot add key for local destination. Enable encryption in the Hidden Services Manager.");
            } else if (sk.getData() == null) {
                addFormError(_t("Invalid key"));
            } else {
                _context.keyRing().put(h, sk);
                addFormNotice(_t("Key for {0} added to keyring", h.toBase32()));
            }
        } else {
            // Delete
            if (h != null && h.getData() != null) {
                if (_context.clientManager().isLocal(h)) {
                    // don't bother translating
                    addFormError("Cannot remove key for local destination. Disable encryption in the Hidden Services Manager.");
                } else if (_context.keyRing().remove(h) != null) {
                    addFormNotice(_t("Key for {0} removed from keyring", h.toBase32()));
                } else {
                    addFormNotice(_t("Key for {0} not found in keyring", h.toBase32()));
                }
            } else {
                addFormError(_t("Invalid destination"));
            }
        }
    } else {
    // addFormError(_t("Unsupported"));
    }
}

Example 30 with SessionKey

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

the class SessionKeyManager method createSession.

/**
 * Generate a new session key and associate it with the specified target.
 *
 * Racy if called after getCurrentKey() to check for a current session;
 * use getCurrentOrNewKey() in that case.
 */
public SessionKey createSession(PublicKey target) {
    SessionKey key = KeyGenerator.getInstance().generateSessionKey();
    createSession(target, key);
    return key;
}