Java Code Examples for org.whispersystems.signalservice.internal.util.Util#join()

The following examples show how to use org.whispersystems.signalservice.internal.util.Util#join() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: ProvisioningCipher.java    From mollyim-android with GNU General Public License v3.0 6 votes vote down vote up 
public byte[] encrypt(ProvisionMessage message) throws InvalidKeyException {
  ECKeyPair ourKeyPair    = Curve.generateKeyPair();
  byte[]    sharedSecret  = Curve.calculateAgreement(theirPublicKey, ourKeyPair.getPrivateKey());
  byte[]    derivedSecret = new HKDFv3().deriveSecrets(sharedSecret, "TextSecure Provisioning Message".getBytes(), 64);
  byte[][]  parts         = Util.split(derivedSecret, 32, 32);

  byte[] version    = {0x01};
  byte[] ciphertext = getCiphertext(parts[0], message.toByteArray());
  byte[] mac        = getMac(parts[1], Util.join(version, ciphertext));
  byte[] body       = Util.join(version, ciphertext, mac);

  return ProvisionEnvelope.newBuilder()
                          .setPublicKey(ByteString.copyFrom(ourKeyPair.getPublicKey().serialize()))
                          .setBody(ByteString.copyFrom(body))
                          .build()
                          .toByteArray();
}
Example 2
Source File: ProvisioningCipher.java    From bcm-android with GNU General Public License v3.0 6 votes vote down vote up 
public byte[] encrypt(ProvisionMessage message) throws InvalidKeyException {
  ECKeyPair ourKeyPair    = Curve.generateKeyPair();
  byte[]    sharedSecret  = Curve.calculateAgreement(theirPublicKey, ourKeyPair.getPrivateKey());
  byte[]    derivedSecret = new HKDFv3().deriveSecrets(sharedSecret, "TextSecure Provisioning Message".getBytes(), 64);
  byte[][]  parts         = Util.split(derivedSecret, 32, 32);

  byte[] version    = {0x01};
  byte[] ciphertext = getCiphertext(parts[0], message.toByteArray());
  byte[] mac        = getMac(parts[1], Util.join(version, ciphertext));
  byte[] body       = Util.join(version, ciphertext, mac);

  return ProvisionEnvelope.newBuilder()
                          .setPublicKey(ByteString.copyFrom(ourKeyPair.getPublicKey().serialize()))
                          .setBody(ByteString.copyFrom(body))
                          .build()
                          .toByteArray();
}
Example 3
Source File: ProvisioningCipher.java    From libsignal-service-java with GNU General Public License v3.0 6 votes vote down vote up 
public byte[] encrypt(ProvisionMessage message) throws InvalidKeyException {
  ECKeyPair ourKeyPair    = Curve.generateKeyPair();
  byte[]    sharedSecret  = Curve.calculateAgreement(theirPublicKey, ourKeyPair.getPrivateKey());
  byte[]    derivedSecret = new HKDFv3().deriveSecrets(sharedSecret, "TextSecure Provisioning Message".getBytes(), 64);
  byte[][]  parts         = Util.split(derivedSecret, 32, 32);

  byte[] version    = {0x01};
  byte[] ciphertext = getCiphertext(parts[0], message.toByteArray());
  byte[] mac        = getMac(parts[1], Util.join(version, ciphertext));
  byte[] body       = Util.join(version, ciphertext, mac);

  return ProvisionEnvelope.newBuilder()
                          .setPublicKey(ByteString.copyFrom(ourKeyPair.getPublicKey().serialize()))
                          .setBody(ByteString.copyFrom(body))
                          .build()
                          .toByteArray();
}
Example 4
Source File: SignalStorageCipher.java    From mollyim-android with GNU General Public License v3.0 5 votes vote down vote up 
public static byte[] encrypt(StorageCipherKey key, byte[] data) {
  try {
    Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
    byte[] iv     = Util.getSecretBytes(IV_LENGTH);

    cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(key.serialize(), "AES"), new GCMParameterSpec(128, iv));
    byte[] ciphertext = cipher.doFinal(data);

    return Util.join(iv, ciphertext);
  } catch (NoSuchAlgorithmException | java.security.InvalidKeyException | InvalidAlgorithmParameterException | NoSuchPaddingException | BadPaddingException | IllegalBlockSizeException  e) {
    throw new AssertionError(e);
  }
}
Example 5
Source File: ProvisioningCipher.java    From mollyim-android with GNU General Public License v3.0 5 votes vote down vote up 
private byte[] getCiphertext(byte[] key, byte[] message) {
  try {
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(key, "AES"));

    return Util.join(cipher.getIV(), cipher.doFinal(message));
  } catch (NoSuchAlgorithmException | NoSuchPaddingException | java.security.InvalidKeyException | IllegalBlockSizeException | BadPaddingException e) {
    throw new AssertionError(e);
  }
}
Example 6
Source File: ProvisioningCipher.java    From bcm-android with GNU General Public License v3.0 5 votes vote down vote up 
private byte[] getCiphertext(byte[] key, byte[] message) {
  try {
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(key, "AES"));

    return Util.join(cipher.getIV(), cipher.doFinal(message));
  } catch (NoSuchAlgorithmException | NoSuchPaddingException | java.security.InvalidKeyException | IllegalBlockSizeException | BadPaddingException e) {
    throw new AssertionError(e);
  }
}
Example 7
Source File: ProvisioningCipher.java    From libsignal-service-java with GNU General Public License v3.0 5 votes vote down vote up 
private byte[] getCiphertext(byte[] key, byte[] message) {
  try {
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(key, "AES"));

    return Util.join(cipher.getIV(), cipher.doFinal(message));
  } catch (NoSuchAlgorithmException | NoSuchPaddingException | java.security.InvalidKeyException | IllegalBlockSizeException | BadPaddingException e) {
    throw new AssertionError(e);
  }
}