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

Example 61 with Aead

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

the class EncryptThenAuthenticateTest method testBitFlipCiphertext.

@Test
public void testBitFlipCiphertext() throws Exception {
    Aead aead = getAead(Random.randBytes(16), Random.randBytes(16), 16, 16, "HMACSHA256");
    byte[] plaintext = Random.randBytes(1001);
    byte[] aad = Random.randBytes(13);
    byte[] ciphertext = aead.encrypt(plaintext, aad);
    for (int i = 0; i < ciphertext.length; i++) {
        for (int j = 0; j < 8; j++) {
            byte[] c1 = Arrays.copyOf(ciphertext, ciphertext.length);
            c1[i] = (byte) (c1[i] ^ (1 << j));
            assertThrows(GeneralSecurityException.class, () -> aead.decrypt(c1, aad));
        }
    }
}

Example 62 with Aead

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

the class EncryptThenAuthenticateTest method testRFCVectors.

@Test
public void testRFCVectors() throws Exception {
    for (int i = 0; i < rfcTestVectors.length; i++) {
        RFCTestVector t = rfcTestVectors[i];
        if (Cipher.getMaxAllowedKeyLength("AES") < 256 && t.encKey.length > 16) {
            System.out.println("Unlimited Strength Jurisdiction Policy Files are required" + " but not installed. Skip tests with keys larger than 128 bits.");
            continue;
        }
        Aead aead = getAead(t.macKey, t.encKey, t.ivSize, t.tagLength, t.macAlg);
        try {
            aead.decrypt(t.ciphertext, t.aad);
        } catch (GeneralSecurityException e) {
            fail("Ciphertext and aad are valid, shouldn't reach here: " + i + " " + e);
        }
    }
}

Example 63 with Aead

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

the class XChaCha20Poly1305Test method testModifyCiphertext.

@Test
public void testModifyCiphertext() throws Exception {
    byte[] key = Random.randBytes(KEY_SIZE);
    Aead aead = createInstance(key);
    byte[] aad = Random.randBytes(16);
    byte[] message = Random.randBytes(32);
    byte[] ciphertext = aead.encrypt(message, aad);
    // Flipping bits
    for (int b = 0; b < ciphertext.length; b++) {
        for (int bit = 0; bit < 8; bit++) {
            byte[] modified = Arrays.copyOf(ciphertext, ciphertext.length);
            modified[b] ^= (byte) (1 << bit);
            assertThrows(AEADBadTagException.class, () -> {
                byte[] unused = aead.decrypt(modified, aad);
            });
        }
    }
    // Truncate the message.
    for (int length = 0; length < ciphertext.length; length++) {
        byte[] modified = Arrays.copyOf(ciphertext, length);
        assertThrows(GeneralSecurityException.class, () -> {
            byte[] unused = aead.decrypt(modified, aad);
        });
    }
    // Modify AAD
    for (int b = 0; b < aad.length; b++) {
        for (int bit = 0; bit < 8; bit++) {
            byte[] modified = Arrays.copyOf(aad, aad.length);
            modified[b] ^= (byte) (1 << bit);
            assertThrows(AEADBadTagException.class, () -> {
                byte[] unused = aead.decrypt(ciphertext, modified);
            });
        }
    }
}

Example 64 with Aead

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

the class XChaCha20Poly1305Test method testEncryptDecrypt.

@Test
public void testEncryptDecrypt() throws Exception {
    Aead aead = createInstance(Random.randBytes(KEY_SIZE));
    for (int i = 0; i < 100; i++) {
        byte[] message = Random.randBytes(i);
        byte[] aad = Random.randBytes(i);
        byte[] ciphertext = aead.encrypt(message, aad);
        byte[] decrypted = aead.decrypt(ciphertext, aad);
        assertArrayEquals(message, decrypted);
    }
}

Example 65 with Aead

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

the class AwsKmsAeadTest method testEncryptShouldThrowExceptionIfRequestFailed.

@Test
public void testEncryptShouldThrowExceptionIfRequestFailed() throws Exception {
    AmazonServiceException exception = mock(AmazonServiceException.class);
    when(mockKms.encrypt(isA(EncryptRequest.class))).thenThrow(exception);
    Aead aead = new AwsKmsAead(mockKms, KEY_ARN);
    byte[] aad = Random.randBytes(20);
    byte[] message = Random.randBytes(20);
    assertThrows(GeneralSecurityException.class, () -> aead.encrypt(message, aad));
}