RSA签名和验证数据

 1         private const string PubKey = "BgIAAACkAABSU0ExAAQAAAEAAQAxg/L6l3AyA+Zd7Hm7ESCcS4CcgY8PvwE2arRvTbfI4+z6zPJaDkOyho9X6owIwceN9zXH5XNsAmEVYBkgmwdX5r5g8iymKywYSaVpt1FDUHRkGY39NuDVsbVJ/1DW15TTVeYLalbtOOb0h61pnaW9FgQNaYMMZSWPO8UZ9hPepw==";
 2 
 3         private const string PriKey = "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";
 4         static void Main(string[] args)
 5         {
 6             var aa = "123456";
 7             var e = SignData(aa,PriKey);
 8             var dd = VerifySerialNum(aa, e, PubKey);
 9         }
10 
11         /// <summary>
12         /// RSA签名数据
13         /// </summary>
14         /// <param name="input">要签名的数据</param>
15         /// <param name="priKey">base64编码的私钥</param>
16         /// <returns>签名后数据的base64字符串</returns>
17         public static string SignData(string input,string priKey)
18         {
19             try
20             {
21                 using (var rsa = new RSACryptoServiceProvider(1024))
22                 {
23                     rsa.ImportCspBlob(Convert.FromBase64String(priKey));
24                     var data = Encoding.UTF8.GetBytes(input);
25                     return Convert.ToBase64String(rsa.SignData(data, new SHA1CryptoServiceProvider()));
26                 }
27             }
28             catch (Exception)
29             {
30                 return string.Empty;
31             }
32         }
33 
34         ///  <summary>
35         /// 验证数据
36         ///  </summary>
37         ///  <param name="input">签名前数据</param>
38         ///  <param name="serialNum">SHA1签名后数据base64编码字符串</param>
39         ///  <param name="pubKey">base64编码的公钥</param>
40         ///  <returns></returns>
41         public static bool VerifySerialNum(string input, string serialNum, string pubKey)
42         {
43             try
44             {
45                 //导入公钥
46                 using (var rsa = new RSACryptoServiceProvider(1024))
47                 {
48                     rsa.ImportCspBlob(Convert.FromBase64String(pubKey));
49                     return rsa.VerifyData(Encoding.UTF8.GetBytes(input), new SHA1CryptoServiceProvider(),
50                         Convert.FromBase64String(serialNum));
51                 }
52             }
53             catch (Exception)
54             {
55                 return false;
56             }
57         }