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

Example 46 with SecretKeySpec

use of javax.crypto.spec.SecretKeySpec in project Signal-Android by WhisperSystems.

the class AsymmetricMasterCipher method getDigestedBytes.

private byte[] getDigestedBytes(byte[] secretBytes, int iteration) {
    try {
        Mac mac = Mac.getInstance("HmacSHA256");
        mac.init(new SecretKeySpec(secretBytes, "HmacSHA256"));
        return mac.doFinal(Conversions.intToByteArray(iteration));
    } catch (NoSuchAlgorithmException | java.security.InvalidKeyException e) {
        throw new AssertionError(e);
    }
}

Example 47 with SecretKeySpec

use of javax.crypto.spec.SecretKeySpec in project Signal-Android by WhisperSystems.

the class MasterSecretUtil method generateMasterSecret.

public static MasterSecret generateMasterSecret(Context context, String passphrase) {
    try {
        byte[] encryptionSecret = generateEncryptionSecret();
        byte[] macSecret = generateMacSecret();
        byte[] masterSecret = Util.combine(encryptionSecret, macSecret);
        byte[] encryptionSalt = generateSalt();
        int iterations = generateIterationCount(passphrase, encryptionSalt);
        byte[] encryptedMasterSecret = encryptWithPassphrase(encryptionSalt, iterations, masterSecret, passphrase);
        byte[] macSalt = generateSalt();
        byte[] encryptedAndMacdMasterSecret = macWithPassphrase(macSalt, iterations, encryptedMasterSecret, passphrase);
        save(context, "encryption_salt", encryptionSalt);
        save(context, "mac_salt", macSalt);
        save(context, "passphrase_iterations", iterations);
        save(context, "master_secret", encryptedAndMacdMasterSecret);
        save(context, "passphrase_initialized", true);
        return new MasterSecret(new SecretKeySpec(encryptionSecret, "AES"), new SecretKeySpec(macSecret, "HmacSHA1"));
    } catch (GeneralSecurityException e) {
        Log.w("keyutil", e);
        return null;
    }
}

Example 48 with SecretKeySpec

use of javax.crypto.spec.SecretKeySpec in project Openfire by igniterealtime.

the class AesEncryptor method cipher.

/**
	 * Symmetric encrypt/decrypt routine.
	 *
	 * @param attribute The value to be converted
	 * @param key The encryption key
	 * @param mode The cipher mode (encrypt or decrypt)
	 * @return The converted attribute, or null if conversion fails
	 */
private byte[] cipher(byte[] attribute, byte[] key, int mode) {
    byte[] result = null;
    try {
        // Create AES encryption key
        Key aesKey = new SecretKeySpec(key, "AES");
        // Create AES Cipher
        Cipher aesCipher = Cipher.getInstance(ALGORITHM);
        // Initialize AES Cipher and convert
        aesCipher.init(mode, aesKey, new IvParameterSpec(INIT_PARM));
        result = aesCipher.doFinal(attribute);
    } catch (Exception e) {
        log.error("AES cipher failed", e);
    }
    return result;
}

Example 49 with SecretKeySpec

use of javax.crypto.spec.SecretKeySpec in project Openfire by igniterealtime.

the class Crypto method generateAESKeystream.

public static Byte[] generateAESKeystream(Byte[] key, Integer length, Byte[] counter) {
    byte[] output = new byte[length.intValue()];
    for (int i = 0; i < output.length; i++) output[i] = 0;
    byte[] input = BitAssistant.bytesFromArray(counter);
    try {
        Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
        cipher.init(1, new SecretKeySpec(BitAssistant.bytesFromArray(key), "AES"));
        for (int i = 0; i < length.intValue(); i += 16) {
            cipher.update(input, 0, 16, output, i);
            IncrementCounter(input);
        }
        for (int i = 0; i < counter.length; i++) counter[i] = Byte.valueOf(input[i]);
        return BitAssistant.bytesToArray(output);
    } catch (Exception e) {
        return new Byte[0];
    }
}

Example 50 with SecretKeySpec

use of javax.crypto.spec.SecretKeySpec in project Openfire by igniterealtime.

the class Crypto method getHmacSha1.

public static Byte[] getHmacSha1(Byte[] key, Byte[] buffer) {
    try {
        Mac mac = Mac.getInstance("HmacSHA1");
        mac.init(new SecretKeySpec(BitAssistant.bytesFromArray(key), "HmacSHA1"));
        return BitAssistant.bytesToArray(mac.doFinal(BitAssistant.bytesFromArray(buffer)));
    } catch (Exception e) {
        return new Byte[0];
    }
}