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

Example 1 with Signature

use of com.github.dedis.popstellar.model.objects.security.Signature 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 2 with Signature

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

the class MessageGeneral method verify.

public boolean verify() {
    if (!this.sender.verify(this.signature, this.dataBuf))
        return false;
    if (this.data instanceof WitnessMessageSignature) {
        WitnessMessageSignature witness = (WitnessMessageSignature) this.data;
        Signature witnessSignature = witness.getSignature();
        MessageID messageID = witness.getMessageId();
        return this.sender.verify(witnessSignature, messageID);
    } else {
        return true;
    }
}

Example 3 with Signature

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

the class MessageGeneralTest method verifyFailsOnInvalidData.

@Test
public void verifyFailsOnInvalidData() {
    MessageGeneral msg = new MessageGeneral(KEY_PAIR.getPublicKey(), DATA_ENCODED, DATA, new Signature("UB6xpjpUGN5VtmWAw1T3npHxiZfKaXzx3ny5PXl_qF4"), MESSAGE_ID, WITNESS_SIGNATURES);
    assertThat(msg.verify(), is(false));
}

Example 4 with Signature

use of com.github.dedis.popstellar.model.objects.security.Signature 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));
}