public static PublicKeyRecord createNew(KeyPair kp)
throws NoSuchAlgorithmException, InvalidKeySpecException {
KeyFactory fact = KeyFactory.getInstance("RSA");
RSAPublicKeySpec pub = fact.getKeySpec(kp.getPublic(), RSAPublicKeySpec.class);
int id = 0;
try {
Connection conn = DatabaseConnection.getConn();
String sql = "insert into publickey modulus = ?, exponent = ?";
PreparedStatement stmt = conn.prepareStatement(sql);
stmt.setString(1, pub.getModulus().toString());
stmt.setString(2, pub.getPublicExponent().toString());
stmt.executeUpdate();
ResultSet generatedKeys = stmt.getGeneratedKeys();
if (generatedKeys.next()) {
id = generatedKeys.getInt(1);
}
} catch (SQLException e) {
e.printStackTrace();
}
return get(id);
}
public static void savePublicKeyInFile(String path, PublicKey key) {
try {
KeyFactory fac = KeyFactory.getInstance("RSA");
RSAPublicKeySpec RSAspec = fac.getKeySpec(key, RSAPublicKeySpec.class);
FileOutputStream file3 = new FileOutputStream(path);
ObjectOutputStream obj_stream = new ObjectOutputStream(file3);
obj_stream.writeObject(RSAspec.getModulus());
obj_stream.writeObject(RSAspec.getPublicExponent());
} catch (Exception ex) {
System.err.println("Probeleme de sauvegarde de la cle public dans un fichier: " + ex);
}
}
// internal implementation of generatePublic. See JCA doc
private PublicKey generatePublic(KeySpec keySpec) throws GeneralSecurityException {
if (keySpec instanceof X509EncodedKeySpec) {
X509EncodedKeySpec x509Spec = (X509EncodedKeySpec) keySpec;
return new RSAPublicKeyImpl(x509Spec.getEncoded());
} else if (keySpec instanceof RSAPublicKeySpec) {
RSAPublicKeySpec rsaSpec = (RSAPublicKeySpec) keySpec;
return new RSAPublicKeyImpl(rsaSpec.getModulus(), rsaSpec.getPublicExponent());
} else {
throw new InvalidKeySpecException(
"Only RSAPublicKeySpec " + "and X509EncodedKeySpec supported for RSA public keys");
}
}
OpenSSLRSAPublicKey(RSAPublicKeySpec spec) throws InvalidKeySpecException {
try {
key =
new OpenSSLKey(
NativeCrypto.EVP_PKEY_new_RSA(
spec.getModulus().toByteArray(),
spec.getPublicExponent().toByteArray(),
null,
null,
null,
null,
null,
null));
} catch (Exception e) {
throw new InvalidKeySpecException(e);
}
}
public void run() {
boolean loginSuccessfull = false;
int loginAttempts = 0;
try {
KeyFactory fact = KeyFactory.getInstance("RSA");
RSAPublicKeySpec pub = fact.getKeySpec(a.getPublicKey(), RSAPublicKeySpec.class);
socketWrapper.write(pub.getModulus().toString());
if (!socketWrapper.read().equals("got")) return;
socketWrapper.write(pub.getPublicExponent().toString());
RSAEncryption rsa = new RSAEncryption();
String msg = rsa.encrypt("[ENCRYPTED HELLO]", a.getPrivateKey());
socketWrapper.write(msg);
String user = null, pass = null;
socketWrapper.write(rsa.encrypt("login as: ", a.getPrivateKey()));
user = rsa.decrypt(socketWrapper.read(), a.getPrivateKey());
System.out.println("[FROM CLIENT] " + user);
while (!loginSuccessfull && loginAttempts < 1) {
if (loginAttempts > 0)
socketWrapper.write(rsa.encrypt("login failed.\npassword: "******"password: "******"[FROM CLIENT] " + pass);
if (accessManager.isPasswordCorrect(user, pass)) {
loginSuccessfull = true;
break;
} else {
loginAttempts++;
}
}
if (!loginSuccessfull) {
if (!user.equals("admin")) accessManager.lockUserAccount(user);
socketWrapper.write(
rsa.encrypt(
"maximum login attempts exeeded. Account is locked now. Disconnect\n",
a.getPrivateKey()));
clientSocket.close();
return;
} else {
if (!accessManager.isAccountUnlocked(user)) {
socketWrapper.write(
rsa.encrypt("account locked. Contact administrator\n", a.getPrivateKey()));
clientSocket.close();
return;
}
}
socketWrapper.write(
rsa.encrypt("logged in as \"" + user + "\" successfully\n", a.getPrivateKey()));
while (true) {
String userInput = rsa.decrypt(socketWrapper.read(), a.getPrivateKey());
if (userInput.equals("quit")) {
System.out.println("[GOT \"quit\" FROM USER]");
socketWrapper.write(rsa.encrypt("[quit]", a.getPrivateKey()));
break;
}
if (userInput.equals("ok")) {
socketWrapper.write(rsa.encrypt("ok", a.getPrivateKey()));
continue;
}
socketWrapper.write(
rsa.encrypt(commandProcessor.processCommand(user, userInput), a.getPrivateKey()));
}
} catch (Exception e) {
e.printStackTrace();
}
}
public BigInteger getPublicExponent() {
return spec.getPublicExponent();
}