1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Web;
5 using System.Security.Cryptography;
6 using System.Text;
7 using System.Globalization;
8 using System.IO;
9
10 /// <summary>
11 ///RSA 的摘要说明
12 /// </summary>
13 public class RSA
14 {
15 public RSA()
16 {
17 //
18 //TODO: 在此处添加构造函数逻辑
19 //
20
21 }
22 #region RSA非对称加解密 密钥保存在密钥容器，密钥容器保存在计算机的密钥库中
23
24 //public static RSACryptoServiceProvider rsa;
25 //static byte[] cipherbytes;//密码字节
26 //static string PublicAndPrivateKey = null; //私鈅变量
27 //static string PublicKey = null; //公钥变量
28
29 static RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
30 //static RSAParameters rsaParamsExcludePrivate = rsa.ExportParameters(false);
31 //static RSAParameters rsaParamsIncludePrivate = rsa.ExportParameters(true);
32
33 static string PPKey; //私鈅变量
34 static string PKey; //公钥变量
35
36
37 private static void CreateRSAcsp()
38 {
39 //实例化CspParameters对象
40
41 CspParameters cspPara = new CspParameters();
42
43 //指定CspParameters对象实例的名称
44
45 cspPara.KeyContainerName = "key_container_test";
46
47 //设置密钥类型为Exchange
48
49 cspPara.KeyNumber = 1;
50
51 //设置密钥容器保存到计算机密钥库（默认为用户密钥库）
52
53 cspPara.Flags = CspProviderFlags.UseMachineKeyStore;
54
55 //实例化RSA对象的时候，将CspParameters对象作为构造函数的参数传递给RSA对象，
56
57 //如果名称为key_container_test的密钥容器不存在，RSA对象会创建这个密钥容器；
58
59 //如果名称为key_container_test的密钥容器已经存在，RSA对象会使用这个密钥容器中的密钥进行实例化
60
61 //RSACryptoServiceProvider rsaPro = new RSACryptoServiceProvider(cspPara);
62
63 rsa = new RSACryptoServiceProvider(cspPara);
64 }
65
66
67 /// <summary>
68 /// RSA加密
69 /// </summary>
70 /// <param name="EnStr">要加密的字符串</param>
71 /// <returns></returns>
72 public static string RSAEncrypt1(string EnStr)
73 {
74
75 CreateRSAcsp();
76 RSACryptoServiceProvider _rsa = new RSACryptoServiceProvider();
77 _rsa.ImportParameters(rsa.ExportParameters(false));//导入公钥
78 byte[] byteData = Encoding.UTF8.GetBytes(EnStr);
79 byte[] EncryptedData = rsa.Encrypt(byteData, false);
80 string result = BitConverter.ToString(EncryptedData);
81 return result;
82 }
83
84 /// <summary>
85 /// RSA解密
86 /// </summary>
87 /// <param name="EeStr">要解密密的字符串</param>
88 /// <returns></returns>
89 public static string RSADecrypt1(string EeStr)
90 {
91
92 string[] sInput = EeStr.Split("-".ToCharArray());
93 byte[] data = new byte[sInput.Length];
94 for (int i = 0; i < sInput.Length; i++)
95 {
96 data[i] = byte.Parse(sInput[i], NumberStyles.HexNumber);
97 }
98 CreateRSAcsp();
99 rsa.ImportParameters(rsa.ExportParameters(true)); //导入私钥
100 byte[] DecryptedData = rsa.Decrypt(data, false);
101 string str = string.Empty;
102 str = Encoding.UTF8.GetString(DecryptedData);
103 return str;
104 }
105
106 #endregion
107
108 }
