RSA公钥加密

        /// <summary>
        /// RSA公钥加密
        /// </summary>
        /// <param name="content">待加密文本</param>
        /// <param name="publickey">RSA公钥</param>
        /// <returns></returns>
        public static string RSAEncrypt(string content, string publickey)
        {
            string result = "";
            try
            {
                RSACryptoServiceProvider.UseMachineKeyStore = true;//防止出现 找不到指定文件 错误
                RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
                RSAParameters RSAKeyInfo = new RSAParameters();
                byte[] bytearr = Convert.FromBase64String(publickey);
                RSAKeyInfo.Modulus = bytearr.ToList().GetRange(29, bytearr.Length - 34).ToArray();
                RSAKeyInfo.Exponent = Convert.FromBase64String("AQAB");
                RSA.ImportParameters(RSAKeyInfo);
                byte[] bytes = RSA.Encrypt(UTF8Encoding.UTF8.GetBytes(content), false);
                result = Convert.ToBase64String(bytes);
            }
            catch (Exception ex)
            {
                log.Warn("RSA加密出错,加密文本:" + content + ",加密公钥：" + publickey + ",错误信息:" + ex.Message);
            }
            return result;
        }