C#SM4加密算法

1.管理NuGet程序包,搜索BouncyCastle,安装

2.代码示例

//加密算法:SM4
//加密模式:ECB
//填充模式:PKCS5Padding
//编码类型:UTF-8
复制代码
        /// <summary>
        /// 加密
        /// </summary>
        /// <param name="plainText"></param>
        /// <param name="secretKey"></param>
        /// <returns></returns>
        public string MS4Encrypt_ECB(string plainText, string secretKey)
        {
            byte[] plaintext = Encoding.UTF8.GetBytes(plainText);
            byte[] keyBytes = Encoding.UTF8.GetBytes(secretKey);
            IBufferedCipher inCipher = CipherUtilities.GetCipher("SM4/ECB/PKCS5Padding");
            KeyParameter key = ParameterUtilities.CreateKeyParameter("SM4", keyBytes);
            inCipher.Init(true, key);
            byte[] cipher = inCipher.DoFinal(plaintext);
            //加密结果数据格式Hex
            byte[] encrypted2 = Hex.Encode(cipher);
            return Encoding.UTF8.GetString(encrypted2).ToUpper();
 
        }
/// <summary> /// 解密 /// </summary> /// <param name="cipherText"></param> /// <param name="secretKey"></param> /// <returns></returns> public string MS4Decrypt_ECB(string cipherText, string secretKey) { byte[] keyBytes = Encoding.UTF8.GetBytes(secretKey); byte[] plaintext = Encoding.UTF8.GetBytes(cipherText); IBufferedCipher inCipher = CipherUtilities.GetCipher("SM4/ECB/PKCS5Padding"); KeyParameter key = ParameterUtilities.CreateKeyParameter("SM4", keyBytes); var cipher = Hex.Encode(plaintext); inCipher.Reset(); inCipher.Init(false, key); byte[] bin = inCipher.DoFinal(cipher); string ans = Encoding.UTF8.GetString(bin); return ans; }
// 当secretKey为Base64位字符串,使用ECB加密为Base64

         public static string MS4Encrypt_ECB(string plainText, string secretKey)
         {
                    byte[] keyBytes = Convert.FromBase64String(secretKey);
                    byte[] plaintext = Encoding.UTF8.GetBytes(plainText);
                    IBufferedCipher inCipher = CipherUtilities.GetCipher("SM4/ECB/PKCS5Padding");
                    KeyParameter key = ParameterUtilities.CreateKeyParameter("SM4", keyBytes);
                    inCipher.Init(true, key);
                    byte[] cipher = inCipher.DoFinal(plaintext);
                    return Convert.ToBase64String(cipher);

        }


复制代码
在线工具:https://lzltool.cn/SM4

 

posted @   【君莫笑】  阅读(236)  评论(1编辑  收藏  举报
相关博文:
阅读排行:
· 在鹅厂做java开发是什么体验
· 百万级群聊的设计实践
· WPF到Web的无缝过渡:英雄联盟客户端的OpenSilver迁移实战
· 永远不要相信用户的输入:从 SQL 注入攻防看输入验证的重要性
· 浏览器原生「磁吸」效果!Anchor Positioning 锚点定位神器解析
点击右上角即可分享
微信分享提示