Examples with CipherOutputStream javax.crypto.CipherOutputStream used on opensource projects

Example 21 with CipherOutputStream

use of javax.crypto.CipherOutputStream in project wycheproof by google.

the class CipherOutputStreamTest method testEncrypt.

@SuppressWarnings("InsecureCryptoUsage")
public void testEncrypt(Iterable<TestVector> tests) throws Exception {
    for (TestVector t : tests) {
        Cipher cipher = Cipher.getInstance(t.algorithm);
        cipher.init(Cipher.ENCRYPT_MODE, t.key, t.params);
        cipher.updateAAD(t.aad);
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        CipherOutputStream cos = new CipherOutputStream(os, cipher);
        cos.write(t.pt);
        cos.close();
        assertEquals(TestUtil.bytesToHex(t.ct), TestUtil.bytesToHex(os.toByteArray()));
    }
}

Example 22 with CipherOutputStream

use of javax.crypto.CipherOutputStream in project wycheproof by google.

the class CipherOutputStreamTest method testDecrypt.

@SuppressWarnings("InsecureCryptoUsage")
public void testDecrypt(Iterable<TestVector> tests) throws Exception {
    for (TestVector t : tests) {
        Cipher cipher = Cipher.getInstance(t.algorithm);
        cipher.init(Cipher.DECRYPT_MODE, t.key, t.params);
        cipher.updateAAD(t.aad);
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        CipherOutputStream cos = new CipherOutputStream(os, cipher);
        cos.write(t.ct);
        cos.close();
        assertEquals(TestUtil.bytesToHex(t.pt), TestUtil.bytesToHex(os.toByteArray()));
    }
}

Example 23 with CipherOutputStream

use of javax.crypto.CipherOutputStream in project wycheproof by google.

the class CipherOutputStreamTest method testCorruptDecrypt.

@SuppressWarnings("InsecureCryptoUsage")
public void testCorruptDecrypt(Iterable<TestVector> tests) throws Exception {
    for (TestVector t : tests) {
        Cipher cipher = Cipher.getInstance(t.algorithm);
        cipher.init(Cipher.DECRYPT_MODE, t.key, t.params);
        cipher.updateAAD(t.aad);
        byte[] ct = Arrays.copyOf(t.ct, t.ct.length);
        ct[ct.length - 1] ^= (byte) 1;
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        CipherOutputStream cos = new CipherOutputStream(os, cipher);
        cos.write(ct);
        try {
            // cos.close() should call cipher.doFinal().
            cos.close();
            byte[] decrypted = os.toByteArray();
            // between beheviour considered acceptable by Oracle and more serious flaws.
            if (decrypted.length > 0) {
                fail("this should fail; decrypted:" + TestUtil.bytesToHex(decrypted) + " pt: " + TestUtil.bytesToHex(t.pt));
            }
        } catch (IOException ex) {
        // expected
        }
    }
}

Example 24 with CipherOutputStream

use of javax.crypto.CipherOutputStream in project RxCache by VictorAlbertos.

the class BuiltInEncryptor method decrypt.

@Override
public void decrypt(String key, File encryptedFile, File decryptedFile) {
    initCiphers(key);
    try {
        CipherOutputStream cos = new CipherOutputStream(new FileOutputStream(decryptedFile), decryptCipher);
        write(new FileInputStream(encryptedFile), cos);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

Example 25 with CipherOutputStream

use of javax.crypto.CipherOutputStream in project syncany by syncany.

the class AesGcmWithBcInputStreamTest method encryptWithAesGcm.

private static byte[] encryptWithAesGcm(byte[] plaintext, byte[] randomKeyBytes, byte[] randomIvBytes) throws IOException, InvalidKeyException, InvalidAlgorithmParameterException, NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException {
    SecretKey randomKey = new SecretKeySpec(randomKeyBytes, "AES");
    Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding", "BC");
    cipher.init(Cipher.ENCRYPT_MODE, randomKey, new IvParameterSpec(randomIvBytes));
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    CipherOutputStream cipherOutputStream = new CipherOutputStream(byteArrayOutputStream, cipher);
    cipherOutputStream.write(plaintext);
    cipherOutputStream.close();
    return byteArrayOutputStream.toByteArray();
}