Examples with I2PAppContext net.i2p.I2PAppContext used on opensource projects

Example 41 with I2PAppContext

use of net.i2p.I2PAppContext in project i2p.i2p by i2p.

the class I2PTunnel method destFromName.

/**
 *  @param i2cpHost may be null
 *  @param i2cpPort may be null
 *  @param user may be null
 *  @param pw may be null
 *  @since 0.9.11
 */
private static Destination destFromName(String name, String i2cpHost, String i2cpPort, boolean isSSL, String user, String pw) throws DataFormatException {
    if ((name == null) || (name.trim().length() <= 0))
        throw new DataFormatException("Empty destination provided");
    I2PAppContext ctx = I2PAppContext.getGlobalContext();
    Log log = ctx.logManager().getLog(I2PTunnel.class);
    if (name.startsWith("file:")) {
        Destination result = new Destination();
        byte[] content = null;
        FileInputStream in = null;
        try {
            in = new FileInputStream(name.substring("file:".length()));
            byte[] buf = new byte[1024];
            int read = DataHelper.read(in, buf);
            content = new byte[read];
            System.arraycopy(buf, 0, content, 0, read);
        } catch (IOException ioe) {
            System.out.println(ioe.getMessage());
            return null;
        } finally {
            if (in != null)
                try {
                    in.close();
                } catch (IOException io) {
                }
        }
        try {
            result.fromByteArray(content);
            return result;
        } catch (RuntimeException ex) {
            if (log.shouldLog(Log.INFO))
                log.info("File is not a binary destination - trying base64");
            try {
                byte[] decoded = Base64.decode(new String(content));
                result.fromByteArray(decoded);
                return result;
            } catch (DataFormatException dfe) {
                if (log.shouldLog(Log.WARN))
                    log.warn("File is not a base64 destination either - failing!");
                return null;
            }
        }
    } else {
        // ask naming service
        name = name.trim();
        NamingService inst = ctx.namingService();
        boolean b32 = name.length() == 60 && name.toLowerCase(Locale.US).endsWith(".b32.i2p");
        Destination d = null;
        if (ctx.isRouterContext() || !b32) {
            // Local lookup.
            // Even though we could do b32 outside router ctx here,
            // we do it below instead so we can set the host and port,
            // which we can't do with lookup()
            d = inst.lookup(name);
            if (d != null || ctx.isRouterContext() || name.length() >= 516)
                return d;
        }
        // Outside router context only,
        // try simple session to ask the router.
        I2PClient client = new I2PSimpleClient();
        Properties opts = new Properties();
        if (i2cpHost != null)
            opts.put(I2PClient.PROP_TCP_HOST, i2cpHost);
        if (i2cpPort != null)
            opts.put(I2PClient.PROP_TCP_PORT, i2cpPort);
        opts.put("i2cp.SSL", Boolean.toString(isSSL));
        if (user != null)
            opts.put("i2cp.username", user);
        if (pw != null)
            opts.put("i2cp.password", pw);
        I2PSession session = null;
        try {
            session = client.createSession(null, opts);
            session.connect();
            d = session.lookupDest(name);
        } catch (I2PSessionException ise) {
            if (log.shouldLog(Log.WARN))
                log.warn("Lookup via router failed", ise);
        } finally {
            if (session != null) {
                try {
                    session.destroySession();
                } catch (I2PSessionException ise) {
                }
            }
        }
        return d;
    }
}

Example 42 with I2PAppContext

use of net.i2p.I2PAppContext in project i2p.i2p by i2p.

the class FortunaRandomSource method main.

/**
 *  Outputs to stdout for dieharder:
 *  <code>
 *  java -cp build/i2p.jar net.i2p.util.FortunaRandomSource | dieharder -a -g 200
 *  </code>
 */
public static void main(String[] args) {
    try {
        java.util.Properties props = new java.util.Properties();
        props.setProperty("prng.buffers", "12");
        I2PAppContext ctx = new I2PAppContext(props);
        RandomSource rand = ctx.random();
        byte[] buf = new byte[65536];
        while (true) {
            rand.nextBytes(buf);
            System.out.write(buf);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}

Example 43 with I2PAppContext

use of net.i2p.I2PAppContext in project i2p.i2p by i2p.

the class ElGamalTest method testYKGen.

public void testYKGen() {
    RandomSource.getInstance().nextBoolean();
    I2PAppContext context = I2PAppContext.getGlobalContext();
    YKGenerator ykgen = new YKGenerator(context);
    for (int i = 0; i < 5; i++) {
        ykgen.getNextYK();
    }
}

Example 44 with I2PAppContext

use of net.i2p.I2PAppContext in project i2p.i2p by i2p.

the class KeyGeneratorTest method testKeyGen.

public void testKeyGen() {
    RandomSource.getInstance().nextBoolean();
    byte[] src = new byte[200];
    RandomSource.getInstance().nextBytes(src);
    I2PAppContext ctx = I2PAppContext.getGlobalContext();
    for (int i = 0; i < 10; i++) {
        Object[] keys = KeyGenerator.getInstance().generatePKIKeypair();
        byte[] ctext = ctx.elGamalEngine().encrypt(src, (PublicKey) keys[0]);
        byte[] ptext = ctx.elGamalEngine().decrypt(ctext, (PrivateKey) keys[1]);
        assertTrue(DataHelper.eq(ptext, src));
    }
    Object[] obj = KeyGenerator.getInstance().generateSigningKeypair();
    SigningPublicKey fake = (SigningPublicKey) obj[0];
    for (int i = 0; i < 10; i++) {
        Object[] keys = KeyGenerator.getInstance().generateSigningKeypair();
        Signature sig = DSAEngine.getInstance().sign(src, (SigningPrivateKey) keys[1]);
        assertTrue(DSAEngine.getInstance().verifySignature(sig, src, (SigningPublicKey) keys[0]));
        assertFalse(DSAEngine.getInstance().verifySignature(sig, src, fake));
    }
    for (int i = 0; i < 1000; i++) {
        KeyGenerator.getInstance().generateSessionKey();
    }
}

Example 45 with I2PAppContext

use of net.i2p.I2PAppContext in project i2p.i2p by i2p.

the class AES256Test method testLong.

@SuppressWarnings("deprecation")
public void testLong() {
    I2PAppContext ctx = new I2PAppContext();
    SessionKey key = ctx.keyGenerator().generateSessionKey();
    byte[] iv = new byte[16];
    RandomSource.getInstance().nextBytes(iv);
    byte[] lbuf = new byte[1024];
    RandomSource.getInstance().nextBytes(lbuf);
    byte[] le = ctx.aes().safeEncrypt(lbuf, key, iv, 2048);
    byte[] ld = ctx.aes().safeDecrypt(le, key, iv);
    assertTrue(DataHelper.eq(ld, lbuf));
}