public void main(Provider p) throws Exception {
KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", p);
kpg.initialize(512);
KeyPair kp = kpg.generateKeyPair();
PrivateKey privateKey = kp.getPrivate();
PublicKey publicKey = kp.getPublic();
Signature sig = Signature.getInstance("MD5withRSA", p);
byte[] data = new byte[10 * 1024];
new Random().nextBytes(data);
sig.initSign(privateKey);
sig.initSign(privateKey);
sig.update(data);
sig.initSign(privateKey);
sig.update(data);
byte[] signature = sig.sign();
sig.update(data);
sig.initSign(privateKey);
sig.update(data);
sig.sign();
sig.sign();
sig.initSign(privateKey);
sig.sign();
System.out.println("All tests passed");
}
public void run() {
try {
ObjectInputStream ois = new ObjectInputStream(s.getInputStream());
ObjectOutputStream oos = new ObjectOutputStream(s.getOutputStream());
BigInteger bg = dhSpec.getG();
BigInteger bp = dhSpec.getP();
oos.writeObject(bg);
oos.writeObject(bp);
KeyPairGenerator kpg = KeyPairGenerator.getInstance("DH");
kpg.initialize(1024);
KeyPair kpa = (KeyPair) ois.readObject();
KeyAgreement dh = KeyAgreement.getInstance("DH");
KeyPair kp = kpg.generateKeyPair();
oos.writeObject(kp);
dh.init(kp.getPrivate());
Key pk = dh.doPhase(kpa.getPublic(), true);
MessageDigest sha256 = MessageDigest.getInstance("SHA-256");
byte[] rawbits = sha256.digest(dh.generateSecret());
Cipher c = Cipher.getInstance(CIPHER_MODE);
SecretKey key = new SecretKeySpec(rawbits, 0, 16, "AES");
byte ivbits[] = (byte[]) ois.readObject();
IvParameterSpec iv = new IvParameterSpec(ivbits);
c.init(Cipher.DECRYPT_MODE, key, iv);
Mac m = Mac.getInstance("HmacSHA1");
SecretKey mackey = new SecretKeySpec(rawbits, 16, 16, "HmacSHA1");
m.init(mackey);
byte ciphertext[], cleartext[], mac[];
try {
while (true) {
ciphertext = (byte[]) ois.readObject();
mac = (byte[]) ois.readObject();
if (Arrays.equals(mac, m.doFinal(ciphertext))) {
cleartext = c.update(ciphertext);
System.out.println(ct + " : " + new String(cleartext, "UTF-8"));
} else {
// System.exit(1);
System.out.println(ct + "error");
}
}
} catch (EOFException e) {
cleartext = c.doFinal();
System.out.println(ct + " : " + new String(cleartext, "UTF-8"));
System.out.println("[" + ct + "]");
} finally {
if (ois != null) ois.close();
if (oos != null) oos.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
private static KeyPairGenerator getInstance(Instance instance, String algorithm) {
KeyPairGenerator kpg;
if (instance.impl instanceof KeyPairGenerator) {
kpg = (KeyPairGenerator) instance.impl;
} else {
KeyPairGeneratorSpi spi = (KeyPairGeneratorSpi) instance.impl;
kpg = new Delegate(spi, algorithm);
}
kpg.provider = instance.provider;
return kpg;
}
/**
* Generates the public/private key pair from the init params
*
* @throws Exception
*/
public void initKeyPair() throws Exception {
// generate keys according to the specified algorithms
// generate publicKey and Private Key
KeyPairGenerator KpairGen = null;
if (asymProvider != null && !asymProvider.trim().isEmpty())
KpairGen = KeyPairGenerator.getInstance(getAlgorithm(asymAlgorithm), asymProvider);
else KpairGen = KeyPairGenerator.getInstance(getAlgorithm(asymAlgorithm));
KpairGen.initialize(asymInit, new SecureRandom());
Kpair = KpairGen.generateKeyPair();
// set up the Cipher to decrypt secret key responses encrypted with our key
if (asymProvider != null && !asymProvider.trim().isEmpty())
asymCipher = Cipher.getInstance(asymAlgorithm, asymProvider);
else asymCipher = Cipher.getInstance(asymAlgorithm);
asymCipher.init(Cipher.DECRYPT_MODE, Kpair.getPrivate());
log.debug("asym algo initialized");
}