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

Example 86 with SecretKey

use of javax.crypto.SecretKey in project Gradle-demo by Arisono.

the class DESUtil method encryptDES.

/**
	 * 加密
	 * @throws Exception 
	 */
public static byte[] encryptDES(byte[] data, byte[] key) throws Exception {
    //获得密钥
    SecretKey secretKey = new SecretKeySpec(key, "DES");
    //Cipher完成加密
    Cipher cipher = Cipher.getInstance("DES");
    //初始化cipher
    cipher.init(Cipher.ENCRYPT_MODE, secretKey);
    //加密
    byte[] encrypt = cipher.doFinal(data);
    return encrypt;
}

Example 87 with SecretKey

use of javax.crypto.SecretKey in project Gradle-demo by Arisono.

the class DESede method initKey.

/**
	 * 生成密钥
	 * @throws Exception 
	 */
public static byte[] initKey() throws Exception {
    //密钥生成器
    KeyGenerator keyGen = KeyGenerator.getInstance("DESede");
    //初始化密钥生成器
    //可指定密钥长度为112或168，默认168
    keyGen.init(168);
    //生成密钥
    SecretKey secretKey = keyGen.generateKey();
    return secretKey.getEncoded();
}

Example 88 with SecretKey

use of javax.crypto.SecretKey in project Gradle-demo by Arisono.

the class DESede method decrypt3DES.

/**
	 * 解密
	 */
public static byte[] decrypt3DES(byte[] data, byte[] key) throws Exception {
    //恢复密钥
    SecretKey secretKey = new SecretKeySpec(key, "DESede");
    //Cipher完成解密
    Cipher cipher = Cipher.getInstance("DESede");
    //初始化cipher
    cipher.init(Cipher.DECRYPT_MODE, secretKey);
    byte[] plain = cipher.doFinal(data);
    return plain;
}

Example 89 with SecretKey

use of javax.crypto.SecretKey in project graylog2-server by Graylog2.

the class KeyUtil method createKeySpec.

private static PKCS8EncodedKeySpec createKeySpec(byte[] keyBytes, String password) throws IOException, NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException {
    if (Strings.isNullOrEmpty(password)) {
        return new PKCS8EncodedKeySpec(keyBytes);
    }
    final EncryptedPrivateKeyInfo pkInfo = new EncryptedPrivateKeyInfo(keyBytes);
    final SecretKeyFactory kf = SecretKeyFactory.getInstance(pkInfo.getAlgName());
    final PBEKeySpec keySpec = new PBEKeySpec(password.toCharArray());
    final SecretKey secretKey = kf.generateSecret(keySpec);
    @SuppressWarnings("InsecureCryptoUsage") final Cipher cipher = Cipher.getInstance(pkInfo.getAlgName());
    cipher.init(Cipher.DECRYPT_MODE, secretKey, pkInfo.getAlgParameters());
    return pkInfo.getKeySpec(cipher);
}

Example 90 with SecretKey

use of javax.crypto.SecretKey in project AndroidChromium by JackyAndroid.

the class WebappAuthenticator method getMac.

/**
     * @return A Mac, or null if it is not possible to instantiate one.
     */
private static Mac getMac(Context context) {
    try {
        SecretKey key = getKey(context);
        if (key == null) {
            // random number generator, and we must not claim that authentication can work.
            return null;
        }
        Mac mac = Mac.getInstance(MAC_ALGORITHM_NAME);
        mac.init(key);
        return mac;
    } catch (GeneralSecurityException e) {
        Log.w(TAG, "Error in creating MAC instance", e);
        return null;
    }
}