Examples with IvParameterSpec javax.crypto.spec.IvParameterSpec used on opensource projects

Example 46 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project jdk8u_jdk by JetBrains.

the class Dynamic method runTest.

protected boolean runTest(String algo, String mo, String pad) throws Exception {
    boolean result = true;
    try {
        byte[] plainText = new byte[160000];
        new Random().nextBytes(plainText);
        String transformation = algo + "/" + mo + "/" + pad;
        ci = Cipher.getInstance(transformation, SUNJCE);
        KeyGenerator kg = KeyGenerator.getInstance(algo, SUNJCE);
        if (keyStrength > Cipher.getMaxAllowedKeyLength(transformation)) {
            // skip if this key length is larger than what's
            // configured in the jce jurisdiction policy files
            System.out.println(keyStrength + " is larger than what's configured " + "in the jce jurisdiction policy files");
            return result;
        }
        kg.init(keyStrength);
        key = kg.generateKey();
        if (!mo.equalsIgnoreCase("GCM")) {
            ci.init(Cipher.ENCRYPT_MODE, key, aps);
        } else {
            ci.init(Cipher.ENCRYPT_MODE, key);
        }
        byte[] cipherText = new byte[ci.getOutputSize(plainText.length)];
        int offset = ci.update(plainText, 0, plainText.length, cipherText, 0);
        ci.doFinal(cipherText, offset);
        if (!mo.equalsIgnoreCase("ECB")) {
            iv = ci.getIV();
            aps = new IvParameterSpec(iv);
        } else {
            aps = null;
        }
        if (!mo.equalsIgnoreCase("GCM")) {
            ci.init(Cipher.DECRYPT_MODE, key, aps);
        } else {
            ci.init(Cipher.DECRYPT_MODE, key, ci.getParameters());
        }
        byte[] recoveredText = new byte[ci.getOutputSize(cipherText.length)];
        int len = ci.doFinal(cipherText, 0, cipherText.length, recoveredText);
        byte[] tmp = new byte[len];
        for (int i = 0; i < len; i++) {
            tmp[i] = recoveredText[i];
        }
        result = Arrays.equals(plainText, tmp);
    } catch (NoSuchAlgorithmException nsaEx) {
        nsaEx.printStackTrace();
        // CFB7 and OFB150 are negative test,SunJCE not support this
        // algorithm
        result = mo.equalsIgnoreCase("CFB7") || mo.equalsIgnoreCase("OFB150");
    }
    return result;
}

Example 47 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project jdk8u_jdk by JetBrains.

the class DESCipherWrapper method execute.

public void execute(int edMode, byte[] inputText) throws InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException, ShortBufferException, NoSuchAlgorithmException {
    AlgorithmParameterSpec aps = null;
    try {
        if (!mode.equalsIgnoreCase("ECB")) {
            aps = new IvParameterSpec(iv);
        }
        ci.init(edMode, key, aps);
        // Generate a resultText using a single-part enc/dec
        resultText = ci.doFinal(inputText);
        // Generate outputText for each multi-part en/de-cryption
        /* Combination #1:
            update(byte[], int, int)
            doFinal(byte[], int, int)
             */
        byte[] part11 = ci.update(inputText, 0, inputText.length);
        byte[] part12 = ci.doFinal();
        byte[] outputText1 = new byte[part11.length + part12.length];
        System.arraycopy(part11, 0, outputText1, 0, part11.length);
        System.arraycopy(part12, 0, outputText1, part11.length, part12.length);
        List<byte[]> outputTexts = new ArrayList<>(4);
        outputTexts.add(outputText1);
        /* Combination #2:
            update(byte[], int, int)
            doFinal(byte[], int, int, byte[], int)
             */
        byte[] part21 = ci.update(inputText, 0, inputText.length - 5);
        byte[] part22 = new byte[ci.getOutputSize(inputText.length)];
        int len2 = ci.doFinal(inputText, inputText.length - 5, 5, part22, 0);
        byte[] outputText2 = new byte[part21.length + len2];
        System.arraycopy(part21, 0, outputText2, 0, part21.length);
        System.arraycopy(part22, 0, outputText2, part21.length, len2);
        outputTexts.add(outputText2);
        /* Combination #3:
            update(byte[], int, int, byte[], int)
            doFinal(byte[], int, int)
             */
        byte[] part31 = new byte[ci.getOutputSize(inputText.length)];
        int len3 = ci.update(inputText, 0, inputText.length - 8, part31, 0);
        byte[] part32 = ci.doFinal(inputText, inputText.length - 8, 8);
        byte[] outputText3 = new byte[len3 + part32.length];
        System.arraycopy(part31, 0, outputText3, 0, len3);
        System.arraycopy(part32, 0, outputText3, len3, part32.length);
        outputTexts.add(outputText3);
        /* Combination #4:
            update(byte[], int, int, byte[], int)
            doFinal(byte[], int, int, byte[], int)
             */
        byte[] part41 = new byte[ci.getOutputSize(inputText.length)];
        int len4 = ci.update(inputText, 0, inputText.length - 8, part41, 0);
        int rest4 = ci.doFinal(inputText, inputText.length - 8, 8, part41, len4);
        byte[] outputText4 = new byte[len4 + rest4];
        System.arraycopy(part41, 0, outputText4, 0, outputText4.length);
        outputTexts.add(outputText4);
        // Compare results
        for (int k = 0; k < outputTexts.size(); k++) {
            if (!Arrays.equals(resultText, outputTexts.get(k))) {
                out.println(" Testing: " + algo + "/" + mode + "/" + pad);
                throw new RuntimeException("Compare value of resultText and combination " + k + " are not same. Test failed.");
            }
        }
        if (keyStrength > Cipher.getMaxAllowedKeyLength(algo)) {
            throw new RuntimeException("Expected exception uncaught, keyStrength " + keyStrength);
        }
    } catch (InvalidKeyException ex) {
        if (keyStrength <= Cipher.getMaxAllowedKeyLength(algo)) {
            out.println("Unexpected exception in " + algo + "/" + mode + "/" + pad + " ,  KeySize " + keyStrength);
            throw ex;
        }
        out.println("Caught InvalidKeyException as expected");
    }
}

Example 48 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project android_frameworks_base by DirtyUnicorns.

the class CryptoHelper method decryptBundle.

@Nullable
/* default */
Bundle decryptBundle(@NonNull Bundle bundle) throws GeneralSecurityException {
    Preconditions.checkNotNull(bundle, "Cannot decrypt null bundle.");
    byte[] iv = bundle.getByteArray(KEY_IV);
    byte[] encryptedBytes = bundle.getByteArray(KEY_CIPHER);
    byte[] mac = bundle.getByteArray(KEY_MAC);
    if (!verifyMac(encryptedBytes, iv, mac)) {
        Log.w(TAG, "Escrow mac mismatched!");
        return null;
    }
    IvParameterSpec ivSpec = new IvParameterSpec(iv);
    Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
    cipher.init(Cipher.DECRYPT_MODE, mEncryptionKey, ivSpec);
    byte[] decryptedBytes = cipher.doFinal(encryptedBytes);
    Parcel decryptedParcel = Parcel.obtain();
    decryptedParcel.unmarshall(decryptedBytes, 0, decryptedBytes.length);
    decryptedParcel.setDataPosition(0);
    Bundle decryptedBundle = new Bundle();
    decryptedBundle.readFromParcel(decryptedParcel);
    decryptedParcel.recycle();
    return decryptedBundle;
}

Example 49 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project UltimateAndroid by cymcsg.

the class TripleDES method decrypt.

/**
     * Decrypt the message with TripleDES
     *
     * @param message
     * @return
     * @throws Exception
     */
public static String decrypt(byte[] message) throws Exception {
    byte[] values = Base64decodingByte(message, 0);
    final MessageDigest md = MessageDigest.getInstance("SHA-1");
    final byte[] digestOfPassword = md.digest(token.getBytes("utf-8"));
    final byte[] keyBytes = copyOf(digestOfPassword, 24);
    for (int j = 0, k = 16; j < 8; ) {
        keyBytes[k++] = keyBytes[j++];
    }
    final SecretKey key = new SecretKeySpec(keyBytes, "DESede");
    String s1 = "12345678";
    byte[] bytes = s1.getBytes();
    final IvParameterSpec iv = new IvParameterSpec(bytes);
    final Cipher decipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");
    decipher.init(Cipher.DECRYPT_MODE, key, iv);
    final byte[] plainText = decipher.doFinal(values);
    return new String(plainText, "UTF-8");
}

Example 50 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project UltimateAndroid by cymcsg.

the class TripleDES method decrypt.

/**
     * Decrypt the message with TripleDES
     *
     * @param message
     * @return
     * @throws Exception
     */
public static String decrypt(String message) throws Exception {
    if (message == null || message == "")
        return "";
    byte[] values = Base64decoding(message, 0);
    final MessageDigest md = MessageDigest.getInstance("SHA-1");
    final byte[] digestOfPassword = md.digest(token.getBytes("utf-8"));
    final byte[] keyBytes = copyOf(digestOfPassword, 24);
    for (int j = 0, k = 16; j < 8; ) {
        keyBytes[k++] = keyBytes[j++];
    }
    final SecretKey key = new SecretKeySpec(keyBytes, "DESede");
    String s1 = "12345678";
    byte[] bytes = s1.getBytes();
    final IvParameterSpec iv = new IvParameterSpec(bytes);
    final Cipher decipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");
    decipher.init(Cipher.DECRYPT_MODE, key, iv);
    final byte[] plainText = decipher.doFinal(values);
    return new String(plainText, "UTF-8");
}