c# RSA加密

获取密钥并存储至密钥容器

 1         /// <summary>
 2         /// 生成密钥
 3         /// </summary>
 4         public static RSAKey GenerateRSAKey()
 5         {
 6             RSAKey RSAKEY = new RSAKey();
 7             //密钥存储容器
 8             CspParameters csp = new CspParameters();
 9             csp.KeyContainerName = "loginInfo";//容器名称
10             //如果密钥容器不存在，则会自动创建，并将 rsa 产生的密钥存入其中；如果已经存在，则会读取其中的密钥给 rsa,未加容器表示创建临时容器存储密钥
11             //RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();//表示创建临时容器存储密钥
12             RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(csp);
13             RSAKEY.PrivateKey = RSA.ToXmlString(true);    //生成私钥
14             RSAKEY.PublicKey = RSA.ToXmlString(false);    //生成公钥
15             return RSAKEY;
16         }

清除密钥容器（获取密钥后删除密钥容器）

 1         /// <summary>
 2         /// 生成密钥
 3         /// </summary>
 4         public static RSAKey GenerateRSAKey()
 5         {
 6             RSAKey RSAKEY = new RSAKey();
 7             //密钥存储容器
 8             CspParameters csp = new CspParameters();
 9             csp.KeyContainerName = "loginInfo";//容器名称
10             //如果密钥容器不存在，则会自动创建，并将 rsa 产生的密钥存入其中；如果已经存在，则会读取其中的密钥给 rsa,未加容器表示创建临时容器存储密钥
11             //RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();//表示创建临时容器存储密钥
12             RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(csp);
13             RSAKEY.PrivateKey = RSA.ToXmlString(true);    //生成私钥
14             RSAKEY.PublicKey = RSA.ToXmlString(false);    //生成公钥
15             //清除密钥容器
16             RSA.PersistKeyInCsp = false;
17             RSA.Clear();
18             return RSAKEY;
19         }

清除容器

RSA.PersistKeyInCsp = false;
RSA.Clear();

公钥加密私钥解密方式

信息加密（非容器获取密钥）

 1         /// <summary>
 2         /// RSA加密
 3         /// </summary>
 4         /// <param name="publickey">公钥</param>
 5         /// <param name="content">加密内容</param>
 6         /// <returns></returns>
 7         public static string RSAEncrypt(string publickey, string content)
 8         {
 9             RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
10             byte[] cipherbytes;
11             rsa.FromXmlString(publickey);
12             cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false);
13             return Convert.ToBase64String(cipherbytes);
14         }

 

信息加密（使用容器获取密钥）

 1         /// <summary>
 2         /// RSA加密
 3         /// </summary>
 4         /// <param name="publickey">公钥</param>
 5         /// <param name="content">加密内容</param>
 6         /// <returns></returns>
 7         public static string RSAEncrypt(string content)
 8         {
 9             CspParameters csp = new CspParameters();
10             csp.KeyContainerName = "loginInfo";
11             RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(csp);
12             byte[] cipherbytes;
13             cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false);
14             return Convert.ToBase64String(cipherbytes);
15         }

信息解密（非容器获取密钥）

 1         /// <summary>
 2         /// RSA解密
 3         /// </summary>
 4         /// <param name="privatekey">私钥</param>
 5         /// <param name="content">解密内容</param>
 6         /// <returns></returns>
 7         public static string RSADecrypt( string content)
 8         {
 9             RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
10             byte[] cipherbytes;
11             rsa.FromXmlString(privatekey);
12             cipherbytes = rsa.Decrypt(Convert.FromBase64String(content), false);
13 
14             return Encoding.UTF8.GetString(cipherbytes);
15         }

信息解密（容器获取密钥）

 1         /// <summary>
 2         /// RSA解密
 3         /// </summary>
 4         /// <param name="privatekey">私钥</param>
 5         /// <param name="content">解密内容</param>
 6         /// <returns></returns>
 7         public static string RSADecrypt(string content)
 8         {
 9             CspParameters csp = new CspParameters();
10             csp.KeyContainerName = "loginInfo";
11             RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(csp);
12             byte[] cipherbytes;
13             cipherbytes = rsa.Decrypt(Convert.FromBase64String(content), false);
14 
15             return Encoding.UTF8.GetString(cipherbytes);
16         }

 

posted @ 2022-05-18 12:01  流年sugar  阅读(6042)  评论(0)  编辑  收藏  举报