Examples with SessionKeyManager net.i2p.crypto.SessionKeyManager used on opensource projects

Example 6 with SessionKeyManager

use of net.i2p.crypto.SessionKeyManager in project i2p.i2p by i2p.

the class SessionEncryptionTest method testSessions.

/**
 *  Run     tagsIncluded    useTag  rekey
 *  1       yes (2)         no      no
 *  2       no              yes     no
 *  3       yes (2)         yes     no
 *  4       no              yes     no
 *  5       no              yes     no
 */
public void testSessions() throws Exception {
    Object[] keys = KeyGenerator.getInstance().generatePKIKeypair();
    PublicKey pubKey = (PublicKey) keys[0];
    PrivateKey privKey = (PrivateKey) keys[1];
    SessionKeyManager skm = new TransientSessionKeyManager(_context);
    SessionKey curKey = skm.createSession(pubKey);
    SessionTag tag1 = new SessionTag(true);
    SessionTag tag2 = new SessionTag(true);
    SessionTag tag3 = new SessionTag(true);
    SessionTag tag4 = new SessionTag(true);
    HashSet<SessionTag> firstTags = new HashSet<SessionTag>();
    firstTags.add(tag1);
    firstTags.add(tag2);
    HashSet<SessionTag> secondTags = new HashSet<SessionTag>();
    secondTags.add(tag3);
    secondTags.add(tag4);
    byte[] msg1 = DataHelper.getASCII("msg 1");
    byte[] msg2 = DataHelper.getASCII("msg 2");
    byte[] msg3 = DataHelper.getASCII("msg 3");
    byte[] msg4 = DataHelper.getASCII("msg 4");
    byte[] msg5 = DataHelper.getASCII("msg 5");
    byte[] emsg1 = _context.elGamalAESEngine().encrypt(msg1, pubKey, curKey, firstTags, null, 64);
    byte[] dmsg1 = _context.elGamalAESEngine().decrypt(emsg1, privKey, skm);
    assertTrue(DataHelper.eq(dmsg1, msg1));
    TagSetHandle tsh = skm.tagsDelivered(pubKey, curKey, firstTags);
    skm.tagsAcked(pubKey, curKey, tsh);
    curKey = skm.getCurrentKey(pubKey);
    SessionTag curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    byte[] emsg2 = _context.elGamalAESEngine().encrypt(msg2, pubKey, curKey, null, curTag, 64);
    byte[] dmsg2 = _context.elGamalAESEngine().decrypt(emsg2, privKey, skm);
    assertTrue(DataHelper.eq(dmsg2, msg2));
    curKey = skm.getCurrentKey(pubKey);
    curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    assertNotNull(curKey);
    byte[] emsg3 = _context.elGamalAESEngine().encrypt(msg3, pubKey, curKey, secondTags, curTag, 64);
    byte[] dmsg3 = _context.elGamalAESEngine().decrypt(emsg3, privKey, skm);
    assertTrue(DataHelper.eq(dmsg3, msg3));
    tsh = skm.tagsDelivered(pubKey, curKey, secondTags);
    skm.tagsAcked(pubKey, curKey, tsh);
    curKey = skm.getCurrentKey(pubKey);
    curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    assertNotNull(curKey);
    byte[] emsg4 = _context.elGamalAESEngine().encrypt(msg4, pubKey, curKey, null, curTag, 64);
    byte[] dmsg4 = _context.elGamalAESEngine().decrypt(emsg4, privKey, skm);
    assertTrue(DataHelper.eq(dmsg4, msg4));
    curKey = skm.getCurrentKey(pubKey);
    curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    assertNotNull(curKey);
    byte[] emsg5 = _context.elGamalAESEngine().encrypt(msg5, pubKey, curKey, null, curTag, 64);
    byte[] dmsg5 = _context.elGamalAESEngine().decrypt(emsg5, privKey, skm);
    assertTrue(DataHelper.eq(dmsg5, msg5));
}

Example 7 with SessionKeyManager

use of net.i2p.crypto.SessionKeyManager 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 8 with SessionKeyManager

use of net.i2p.crypto.SessionKeyManager in project i2p.i2p by i2p.

the class SessionEncryptionTest method testRekeying.

/**
 *  Run tagsIncluded    useTag  rekey
 *  1   yes (2)         no      no
 *  2   no              yes     no
 *  3   yes (2)         yes     yes
 *  4   no              yes     no
 *  5   no              yes     no
 */
public void testRekeying() throws Exception {
    Object[] keys = KeyGenerator.getInstance().generatePKIKeypair();
    PublicKey pubKey = (PublicKey) keys[0];
    PrivateKey privKey = (PrivateKey) keys[1];
    SessionKeyManager skm = new TransientSessionKeyManager(_context);
    SessionKey curKey = skm.createSession(pubKey);
    SessionKey nextKey = KeyGenerator.getInstance().generateSessionKey();
    SessionTag tag1 = new SessionTag(true);
    SessionTag tag2 = new SessionTag(true);
    SessionTag tag3 = new SessionTag(true);
    SessionTag tag4 = new SessionTag(true);
    HashSet<SessionTag> firstTags = new HashSet<SessionTag>();
    firstTags.add(tag1);
    firstTags.add(tag2);
    HashSet<SessionTag> secondTags = new HashSet<SessionTag>();
    secondTags.add(tag3);
    secondTags.add(tag4);
    byte[] msg1 = DataHelper.getASCII("msg 1");
    byte[] msg2 = DataHelper.getASCII("msg 2");
    byte[] msg3 = DataHelper.getASCII("msg 3");
    byte[] msg4 = DataHelper.getASCII("msg 4");
    byte[] msg5 = DataHelper.getASCII("msg 5");
    byte[] emsg1 = _context.elGamalAESEngine().encrypt(msg1, pubKey, curKey, firstTags, null, 64);
    byte[] dmsg1 = _context.elGamalAESEngine().decrypt(emsg1, privKey, skm);
    assertTrue(DataHelper.eq(dmsg1, msg1));
    TagSetHandle tsh = skm.tagsDelivered(pubKey, curKey, firstTags);
    skm.tagsAcked(pubKey, curKey, tsh);
    curKey = skm.getCurrentKey(pubKey);
    SessionTag curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    byte[] emsg2 = _context.elGamalAESEngine().encrypt(msg2, pubKey, curKey, null, curTag, 64);
    byte[] dmsg2 = _context.elGamalAESEngine().decrypt(emsg2, privKey, skm);
    assertTrue(DataHelper.eq(dmsg2, msg2));
    curKey = skm.getCurrentKey(pubKey);
    curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    assertNotNull(curKey);
    byte[] emsg3 = _context.elGamalAESEngine().encrypt(msg3, pubKey, curKey, secondTags, curTag, nextKey, 64);
    byte[] dmsg3 = _context.elGamalAESEngine().decrypt(emsg3, privKey, skm);
    assertTrue(DataHelper.eq(dmsg3, msg3));
    // note nextKey not curKey
    tsh = skm.tagsDelivered(pubKey, nextKey, secondTags);
    skm.tagsAcked(pubKey, nextKey, tsh);
    curKey = skm.getCurrentKey(pubKey);
    curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    assertNotNull(curKey);
    byte[] emsg4 = _context.elGamalAESEngine().encrypt(msg4, pubKey, curKey, null, curTag, 64);
    byte[] dmsg4 = _context.elGamalAESEngine().decrypt(emsg4, privKey, skm);
    assertTrue(DataHelper.eq(dmsg4, msg4));
    curKey = skm.getCurrentKey(pubKey);
    curTag = skm.consumeNextAvailableTag(pubKey, curKey);
    assertNotNull(curTag);
    assertNotNull(curKey);
    byte[] emsg5 = _context.elGamalAESEngine().encrypt(msg5, pubKey, curKey, null, curTag, 64);
    byte[] dmsg5 = _context.elGamalAESEngine().decrypt(emsg5, privKey, skm);
    assertTrue(DataHelper.eq(dmsg5, msg5));
}

Example 9 with SessionKeyManager

use of net.i2p.crypto.SessionKeyManager in project i2p.i2p by i2p.

the class SessionEncryptionTest method testLongSession.

/**
 *  20 tags every 10 messages, rekey every 50
 */
public void testLongSession() throws Exception {
    Object[] keys = KeyGenerator.getInstance().generatePKIKeypair();
    PublicKey pubKey = (PublicKey) keys[0];
    PrivateKey privKey = (PrivateKey) keys[1];
    SessionKeyManager skm = new TransientSessionKeyManager(_context);
    SessionKey curKey = skm.createSession(pubKey);
    for (int i = 0; i < 1000; i++) {
        Set<SessionTag> tags = null;
        SessionKey nextKey = null;
        curKey = skm.getCurrentKey(pubKey);
        SessionTag curTag = skm.consumeNextAvailableTag(pubKey, curKey);
        int availTags = skm.getAvailableTags(pubKey, curKey);
        if ((availTags < 1)) {
            tags = generateNewTags(50);
        }
        if (i % 50 == 0)
            nextKey = KeyGenerator.getInstance().generateSessionKey();
        byte[] msg = DataHelper.getASCII("msg " + i);
        byte[] emsg = _context.elGamalAESEngine().encrypt(msg, pubKey, curKey, tags, curTag, nextKey, 64);
        byte[] dmsg = _context.elGamalAESEngine().decrypt(emsg, privKey, skm);
        assertTrue(DataHelper.eq(dmsg, msg));
        if ((tags != null) && (tags.size() > 0)) {
            if (nextKey == null) {
                TagSetHandle tsh = skm.tagsDelivered(pubKey, curKey, tags);
                skm.tagsAcked(pubKey, curKey, tsh);
            } else {
                TagSetHandle tsh = skm.tagsDelivered(pubKey, nextKey, tags);
                skm.tagsAcked(pubKey, nextKey, tsh);
            }
        }
    }
}

Example 10 with SessionKeyManager

use of net.i2p.crypto.SessionKeyManager in project i2p.i2p by i2p.

the class SessionEncryptionTest method testNoSessions2.

public void testNoSessions2() throws Exception {
    Object[] keys = KeyGenerator.getInstance().generatePKIKeypair();
    PublicKey pubKey = (PublicKey) keys[0];
    PrivateKey privKey = (PrivateKey) keys[1];
    SessionKeyManager skm = new TransientSessionKeyManager(_context);
    SessionKey curKey = skm.createSession(pubKey);
    byte[] msg = DataHelper.getASCII("msg 2");
    byte[] emsg = _context.elGamalAESEngine().encrypt(msg, pubKey, curKey, null, null, 64);
    byte[] dmsg = _context.elGamalAESEngine().decrypt(emsg, privKey, skm);
    assertTrue(DataHelper.eq(dmsg, msg));
}