public static String encrypt(String source, String publicKey)
        throws Exception {
    Key key = getPublicKey(publicKey);
    /** 得到Cipher对象来实现对源数据的RSA加密 */
    Cipher cipher = Cipher.getInstance(ConfigureEncryptAndDecrypt.RSA_ALGORITHM);
    cipher.init(Cipher.ENCRYPT_MODE, key);
    byte[] b = source.getBytes();
    /** 执行加密操作 */
    byte[] b1 = cipher.doFinal(b);
    return new String(Base64.encodeBase64(b1),
            ConfigureEncryptAndDecrypt.CHAR_ENCODING);
}

    public static PublicKey getPublicKey(String key) throws Exception {
    X509EncodedKeySpec keySpec = new X509EncodedKeySpec(
            Base64.decodeBase64(key.getBytes()));
    KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    PublicKey publicKey = keyFactory.generatePublic(keySpec);
    return publicKey;
}

    public static byte[] RsaEncrypt(string data, string key)
    {
        var rsaProvider = new RSACryptoServiceProvider();
        rsaProvider.FromXmlString(key);
        return rsaProvider.Encrypt(Encoding.UTF8.GetBytes(data), false);
    }