Examples with Aead com.google.crypto.tink.Aead used on opensource projects

Example 16 with Aead

use of com.google.crypto.tink.Aead in project tink by google.

the class AesEaxKeyManagerTest method testCiphertextSize.

@Test
public void testCiphertextSize() throws Exception {
    AesEaxKey key = factory.createKey(createKeyFormat(32, 16));
    Aead aead = manager.getPrimitive(key, Aead.class);
    byte[] plaintext = "plaintext".getBytes(UTF_8);
    byte[] associatedData = "associatedData".getBytes(UTF_8);
    byte[] ciphertext = aead.encrypt(plaintext, associatedData);
    assertEquals(16 + /* IV_SIZE */
    plaintext.length + 16, /* TAG_SIZE */
    ciphertext.length);
}

Example 17 with Aead

use of com.google.crypto.tink.Aead in project tink by google.

the class AeadThreadSafetyTest method testXChaChaPoly1305.

@Test
public void testXChaChaPoly1305() throws Exception {
    byte[] key = Random.randBytes(32);
    Aead cipher = new XChaCha20Poly1305(key);
    testEncryptionDecryption(cipher, 5, 128, 20);
}

Example 18 with Aead

use of com.google.crypto.tink.Aead in project tink by google.

the class KeysetServiceImpl method readEncrypted.

@Override
public void readEncrypted(KeysetReadEncryptedRequest request, StreamObserver<KeysetReadEncryptedResponse> responseObserver) {
    KeysetReadEncryptedResponse response;
    try {
        // get masterAead
        KeysetHandle masterKeysetHandle = CleartextKeysetHandle.read(BinaryKeysetReader.withBytes(request.getMasterKeyset().toByteArray()));
        Aead masterAead = masterKeysetHandle.getPrimitive(Aead.class);
        // read encrypted keyset to keysetHandle
        KeysetReader reader = BinaryKeysetReader.withBytes(request.getEncryptedKeyset().toByteArray());
        KeysetHandle keysetHandle;
        if (request.hasAssociatedData()) {
            keysetHandle = KeysetHandle.readWithAssociatedData(reader, masterAead, request.getAssociatedData().getValue().toByteArray());
        } else {
            keysetHandle = KeysetHandle.read(reader, masterAead);
        }
        // get keyset from keysetHandle
        Keyset keyset = CleartextKeysetHandle.getKeyset(keysetHandle);
        ByteArrayOutputStream keysetStream = new ByteArrayOutputStream();
        BinaryKeysetWriter.withOutputStream(keysetStream).write(keyset);
        keysetStream.close();
        response = KeysetReadEncryptedResponse.newBuilder().setKeyset(ByteString.copyFrom(keysetStream.toByteArray())).build();
    } catch (GeneralSecurityException | InvalidProtocolBufferException e) {
        response = KeysetReadEncryptedResponse.newBuilder().setErr(e.toString()).build();
    } catch (IOException e) {
        responseObserver.onError(Status.UNKNOWN.withDescription(e.getMessage()).asException());
        return;
    }
    responseObserver.onNext(response);
    responseObserver.onCompleted();
}

Example 19 with Aead

use of com.google.crypto.tink.Aead in project tink by google.

the class FakeKmsClientTest method createNewAead_success.

@Test
public void createNewAead_success() throws GeneralSecurityException {
    String uri = FakeKmsClient.createFakeKeyUri();
    FakeKmsClient client = new FakeKmsClient(uri);
    assertThat(client.doesSupport(uri)).isTrue();
    Aead aead = client.getAead(uri);
    byte[] plaintext = Random.randBytes(20);
    byte[] associatedData = Random.randBytes(20);
    byte[] ciphertext = aead.encrypt(plaintext, associatedData);
    assertArrayEquals(plaintext, aead.decrypt(ciphertext, associatedData));
}

Example 20 with Aead

use of com.google.crypto.tink.Aead in project tink by google.

the class AeadServiceImpl method encrypt.

/**
 * Encrypts a message.
 */
@Override
public void encrypt(AeadEncryptRequest request, StreamObserver<AeadEncryptResponse> responseObserver) {
    AeadEncryptResponse response;
    try {
        KeysetHandle keysetHandle = CleartextKeysetHandle.read(BinaryKeysetReader.withBytes(request.getKeyset().toByteArray()));
        Aead aead = keysetHandle.getPrimitive(Aead.class);
        byte[] ciphertext = aead.encrypt(request.getPlaintext().toByteArray(), request.getAssociatedData().toByteArray());
        response = AeadEncryptResponse.newBuilder().setCiphertext(ByteString.copyFrom(ciphertext)).build();
    } catch (GeneralSecurityException | InvalidProtocolBufferException e) {
        response = AeadEncryptResponse.newBuilder().setErr(e.toString()).build();
    } catch (IOException e) {
        responseObserver.onError(Status.UNKNOWN.withDescription(e.getMessage()).asException());
        return;
    }
    responseObserver.onNext(response);
    responseObserver.onCompleted();
}