Examples with KeyPair com.github.dedis.popstellar.model.objects.security.KeyPair used on opensource projects

Example 1 with KeyPair

use of com.github.dedis.popstellar.model.objects.security.KeyPair in project popstellar by dedis.

the class LaoDetailViewModel method updateLaoName.

/**
 * Method to update the name of a Lao by sending an updateLao msg and a stateLao msg to the
 * backend
 */
public void updateLaoName() {
    Log.d(TAG, "Updating lao name to " + mLaoName.getValue());
    Lao lao = getCurrentLaoValue();
    Channel channel = lao.getChannel();
    KeyPair mainKey = keyManager.getMainKeyPair();
    long now = Instant.now().getEpochSecond();
    UpdateLao updateLao = new UpdateLao(mainKey.getPublicKey(), lao.getCreation(), mLaoName.getValue(), now, lao.getWitnesses());
    MessageGeneral msg = new MessageGeneral(mainKey, updateLao, gson);
    Disposable disposable = networkManager.getMessageSender().publish(channel, msg).subscribe(() -> {
        Log.d(TAG, "updated lao name");
        dispatchLaoUpdate("lao name", updateLao, lao, channel, msg);
    }, error -> ErrorUtils.logAndShow(getApplication(), TAG, error, R.string.error_update_lao));
    disposables.add(disposable);
}

Example 2 with KeyPair

use of com.github.dedis.popstellar.model.objects.security.KeyPair in project popstellar by dedis.

the class LaoDetailViewModel method signMessage.

public void signMessage(WitnessMessage witnessMessage) {
    Log.d(TAG, "signing message with ID " + witnessMessage.getMessageId());
    Lao lao = getCurrentLaoValue();
    if (lao == null) {
        Log.d(TAG, LAO_FAILURE_MESSAGE);
        return;
    }
    Channel channel = lao.getChannel();
    try {
        KeyPair mainKey = keyManager.getMainKeyPair();
        // generate the signature of the message
        Signature signature = mainKey.sign(witnessMessage.getMessageId());
        Log.d(TAG, PUBLISH_MESSAGE);
        WitnessMessageSignature signatureMessage = new WitnessMessageSignature(witnessMessage.getMessageId(), signature);
        disposables.add(networkManager.getMessageSender().publish(keyManager.getMainKeyPair(), channel, signatureMessage).subscribe(() -> Log.d(TAG, "Verifying the signature of  message  with id: " + witnessMessage.getMessageId()), error -> ErrorUtils.logAndShow(getApplication(), TAG, error, R.string.error_sign_message)));
    } catch (GeneralSecurityException e) {
        Log.d(TAG, PK_FAILURE_MESSAGE, e);
    }
}

Example 3 with KeyPair

use of com.github.dedis.popstellar.model.objects.security.KeyPair in project popstellar by dedis.

the class LaoDetailViewModel method updateLaoWitnesses.

/**
 * Method to update the list of witnesses of a Lao by sending an updateLao msg and a stateLao msg
 * to the backend
 */
public void updateLaoWitnesses() {
    Log.d(TAG, "Updating lao witnesses ");
    Lao lao = getCurrentLaoValue();
    if (lao == null) {
        Log.d(TAG, LAO_FAILURE_MESSAGE);
        return;
    }
    Channel channel = lao.getChannel();
    KeyPair mainKey = keyManager.getMainKeyPair();
    long now = Instant.now().getEpochSecond();
    UpdateLao updateLao = new UpdateLao(mainKey.getPublicKey(), lao.getCreation(), lao.getName(), now, witnesses);
    MessageGeneral msg = new MessageGeneral(mainKey, updateLao, gson);
    Disposable disposable = networkManager.getMessageSender().publish(channel, msg).subscribe(() -> {
        Log.d(TAG, "updated lao witnesses");
        dispatchLaoUpdate("lao state with new witnesses", updateLao, lao, channel, msg);
    }, error -> ErrorUtils.logAndShow(getApplication(), TAG, error, R.string.error_update_lao));
    disposables.add(disposable);
}

Example 4 with KeyPair

use of com.github.dedis.popstellar.model.objects.security.KeyPair in project popstellar by dedis.

the class KeyManager method getKeyPair.

@VisibleForTesting
public KeyPair getKeyPair(KeysetHandle keysetHandle) throws GeneralSecurityException, IOException {
    PrivateKey privateKey = new ProtectedPrivateKey(keysetHandle);
    PublicKey publicKey = getPublicKey(keysetHandle);
    return new KeyPair(privateKey, publicKey);
}

Example 5 with KeyPair

use of com.github.dedis.popstellar.model.objects.security.KeyPair in project popstellar by dedis.

the class KeyManagerTest method keyPairIsRight.

@Test
public void keyPairIsRight() throws GeneralSecurityException {
    KeyManager keyManager = new KeyManager(androidKeysetManager, wallet);
    KeyPair mainKeyPair = keyManager.getMainKeyPair();
    PublicKey mainKey = keyManager.getMainPublicKey();
    assertEquals(mainKey, mainKeyPair.getPublicKey());
    // We cannot extract the public key from the keyset handle
    // But we can make sure both signatures are equals and the key manager keypair can verify it
    PublicKeySign signer = androidKeysetManager.getKeysetHandle().getPrimitive(PublicKeySign.class);
    // Generate any data, here a message id
    Base64URLData data = Base64DataUtils.generateMessageID();
    Signature signature = mainKeyPair.sign(data);
    assertArrayEquals(signer.sign(data.getData()), signature.getData());
    assertTrue(mainKey.verify(signature, data));
}