DES对称加解密方法
改了一个DES对称加解密的代码，见者有份，即拿即用（注意看注释使用）。^_^
1 using System;
2 using System.IO;
3 using System.Text;
4 using System.Xml;
5 using System.Configuration;
6 using System.Security.Cryptography;
7
8 namespace SymmetryEncrypt
9 {
10 /// <summary>
11 /// DES对称加密方法
12 /// Author:Fancy[tony]
13 /// Create Time :2006-04-1
14 /// Last Modify Time:2006-04-20
15 /// </summary>
16 public class DESEncryptData
17 {
18 #region DES对称加密方法
19
20 /// <summary>
21 /// DES对称加密方法
22 /// </summary>
23 /// <param name="InitData">原始待加密数据</param>
24 public static string EncryptData(object InitData)
25 {
26 try
27 {
28 string SecretKey = "desecret";
29 DESCryptoServiceProvider des = new DESCryptoServiceProvider();
30 //把字符串放到byte数组中
31 Byte[] inputByteArray = Encoding.Default.GetBytes(InitData.ToString());
32 //建立加密对象的密钥和偏移量
33 des.Key = ASCIIEncoding.ASCII.GetBytes(SecretKey);
34 //原文使用ASCIIEncoding.ASCII方法的GetBytes方法
35 des.IV = ASCIIEncoding.ASCII.GetBytes(SecretKey);
36 //使得输入密码必须输入英文文本
37 MemoryStream ms = new MemoryStream();
38 CryptoStream cs = new CryptoStream(ms,des.CreateEncryptor(),CryptoStreamMode.Write);
39 cs.Write(inputByteArray, 0, inputByteArray.Length);
40 cs.FlushFinalBlock();
41 StringBuilder ret = new StringBuilder();
42 foreach(Byte b in ms.ToArray())
43 {
44 ret.AppendFormat("{0:X2}", b);
45 }
46 ret.ToString();
47 return ret.ToString();
48 }
49 catch
50 {
51 return "";
52 }
53 }
54
55 /// <summary>
56 /// DES对称加密方法
57 /// </summary>
58 /// <param name="InitData">原始待加密数据</param>
59 /// <param name="SecretKey">加密密钥,密钥长度必须为八位有效英文字符,例如"12secret"</param>
60 public static string EncryptData(object InitData ,string SecretKey)
61 {
62 try
63 {
64 DESCryptoServiceProvider des = new DESCryptoServiceProvider();
65 //把字符串放到byte数组中
66 Byte[] inputByteArray = Encoding.Default.GetBytes(InitData.ToString());
67 //建立加密对象的密钥和偏移量
68 des.Key = ASCIIEncoding.ASCII.GetBytes(SecretKey);
69 //原文使用ASCIIEncoding.ASCII方法的GetBytes方法
70 des.IV = ASCIIEncoding.ASCII.GetBytes(SecretKey);
71 //使得输入密码必须输入英文文本
72 MemoryStream ms = new MemoryStream();
73 CryptoStream cs = new CryptoStream(ms,des.CreateEncryptor(),CryptoStreamMode.Write);
74 cs.Write(inputByteArray, 0, inputByteArray.Length);
75 cs.FlushFinalBlock();
76 StringBuilder ret = new StringBuilder();
77 foreach(Byte b in ms.ToArray())
78 {
79 ret.AppendFormat("{0:X2}", b);
80 }
81 ret.ToString();
82 return ret.ToString();
83 }
84 catch
85 {
86 return "";
87 }
88 }
89
90 #endregion
91
92 #region DES对称解密方法
93
94 /// <summary>
95 /// DES对称解密方法
96 /// </summary>
97 /// <param name="EncryptedData">待解密数据</param>
98 public static string DecryptData(object EncryptedData)
99 {
100 try
101 {
102 string SecretKey = "desecret";
103 string pToDecrypt = EncryptedData.ToString();
104 DESCryptoServiceProvider des = new DESCryptoServiceProvider();
105 Byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
106 for(int x = 0; x < pToDecrypt.Length / 2; x++)
107 {
108 int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
109 inputByteArray[x] = (byte)i;
110 }
111 //建立加密对象的密钥和偏移量，此值重要，不能修改
112 des.Key = ASCIIEncoding.ASCII.GetBytes(SecretKey);
113 des.IV = ASCIIEncoding.ASCII.GetBytes(SecretKey);
114 MemoryStream ms = new MemoryStream();
115 CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(),CryptoStreamMode.Write);
116 cs.Write(inputByteArray, 0, inputByteArray.Length);
117 cs.FlushFinalBlock();
118 return System.Text.Encoding.Default.GetString(ms.ToArray());
119 }
120 catch
121 {
122 return "";
123 }
124 }
125
126 /// <summary>
127 /// DES对称解密方法
128 /// </summary>
129 /// <param name="EncryptedData">待解密数据</param>
130 /// <param name="SecretKey">解密密钥,必须是加密时的密钥,密钥长度必须为八位有效英文字符,例如"12secret"</param>
131 public static string DecryptData(object EncryptedData ,string SecretKey)
132 {
133 try
134 {
135 string pToDecrypt = EncryptedData.ToString();
136 DESCryptoServiceProvider des = new DESCryptoServiceProvider();
137 Byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
138 for(int x = 0; x < pToDecrypt.Length / 2; x++)
139 {
140 int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
141 inputByteArray[x] = (byte)i;
142 }
143 //建立加密对象的密钥和偏移量，此值重要，不能修改
144 des.Key = ASCIIEncoding.ASCII.GetBytes(SecretKey);
145 des.IV = ASCIIEncoding.ASCII.GetBytes(SecretKey);
146 MemoryStream ms = new MemoryStream();
147 CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(),CryptoStreamMode.Write);
148 cs.Write(inputByteArray, 0, inputByteArray.Length);
149 cs.FlushFinalBlock();
150 return System.Text.Encoding.Default.GetString(ms.ToArray());
151 }
152 catch
153 {
154 return "";
155 }
156 }
157
158 #endregion
159 }
160 }
2 using System.IO;
3 using System.Text;
4 using System.Xml;
5 using System.Configuration;
6 using System.Security.Cryptography;
7
8 namespace SymmetryEncrypt
9 {
10 /// <summary>
11 /// DES对称加密方法
12 /// Author:Fancy[tony]
13 /// Create Time :2006-04-1
14 /// Last Modify Time:2006-04-20
15 /// </summary>
16 public class DESEncryptData
17 {
18 #region DES对称加密方法
19
20 /// <summary>
21 /// DES对称加密方法
22 /// </summary>
23 /// <param name="InitData">原始待加密数据</param>
24 public static string EncryptData(object InitData)
25 {
26 try
27 {
28 string SecretKey = "desecret";
29 DESCryptoServiceProvider des = new DESCryptoServiceProvider();
30 //把字符串放到byte数组中
31 Byte[] inputByteArray = Encoding.Default.GetBytes(InitData.ToString());
32 //建立加密对象的密钥和偏移量
33 des.Key = ASCIIEncoding.ASCII.GetBytes(SecretKey);
34 //原文使用ASCIIEncoding.ASCII方法的GetBytes方法
35 des.IV = ASCIIEncoding.ASCII.GetBytes(SecretKey);
36 //使得输入密码必须输入英文文本
37 MemoryStream ms = new MemoryStream();
38 CryptoStream cs = new CryptoStream(ms,des.CreateEncryptor(),CryptoStreamMode.Write);
39 cs.Write(inputByteArray, 0, inputByteArray.Length);
40 cs.FlushFinalBlock();
41 StringBuilder ret = new StringBuilder();
42 foreach(Byte b in ms.ToArray())
43 {
44 ret.AppendFormat("{0:X2}", b);
45 }
46 ret.ToString();
47 return ret.ToString();
48 }
49 catch
50 {
51 return "";
52 }
53 }
54
55 /// <summary>
56 /// DES对称加密方法
57 /// </summary>
58 /// <param name="InitData">原始待加密数据</param>
59 /// <param name="SecretKey">加密密钥,密钥长度必须为八位有效英文字符,例如"12secret"</param>
60 public static string EncryptData(object InitData ,string SecretKey)
61 {
62 try
63 {
64 DESCryptoServiceProvider des = new DESCryptoServiceProvider();
65 //把字符串放到byte数组中
66 Byte[] inputByteArray = Encoding.Default.GetBytes(InitData.ToString());
67 //建立加密对象的密钥和偏移量
68 des.Key = ASCIIEncoding.ASCII.GetBytes(SecretKey);
69 //原文使用ASCIIEncoding.ASCII方法的GetBytes方法
70 des.IV = ASCIIEncoding.ASCII.GetBytes(SecretKey);
71 //使得输入密码必须输入英文文本
72 MemoryStream ms = new MemoryStream();
73 CryptoStream cs = new CryptoStream(ms,des.CreateEncryptor(),CryptoStreamMode.Write);
74 cs.Write(inputByteArray, 0, inputByteArray.Length);
75 cs.FlushFinalBlock();
76 StringBuilder ret = new StringBuilder();
77 foreach(Byte b in ms.ToArray())
78 {
79 ret.AppendFormat("{0:X2}", b);
80 }
81 ret.ToString();
82 return ret.ToString();
83 }
84 catch
85 {
86 return "";
87 }
88 }
89
90 #endregion
91
92 #region DES对称解密方法
93
94 /// <summary>
95 /// DES对称解密方法
96 /// </summary>
97 /// <param name="EncryptedData">待解密数据</param>
98 public static string DecryptData(object EncryptedData)
99 {
100 try
101 {
102 string SecretKey = "desecret";
103 string pToDecrypt = EncryptedData.ToString();
104 DESCryptoServiceProvider des = new DESCryptoServiceProvider();
105 Byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
106 for(int x = 0; x < pToDecrypt.Length / 2; x++)
107 {
108 int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
109 inputByteArray[x] = (byte)i;
110 }
111 //建立加密对象的密钥和偏移量，此值重要，不能修改
112 des.Key = ASCIIEncoding.ASCII.GetBytes(SecretKey);
113 des.IV = ASCIIEncoding.ASCII.GetBytes(SecretKey);
114 MemoryStream ms = new MemoryStream();
115 CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(),CryptoStreamMode.Write);
116 cs.Write(inputByteArray, 0, inputByteArray.Length);
117 cs.FlushFinalBlock();
118 return System.Text.Encoding.Default.GetString(ms.ToArray());
119 }
120 catch
121 {
122 return "";
123 }
124 }
125
126 /// <summary>
127 /// DES对称解密方法
128 /// </summary>
129 /// <param name="EncryptedData">待解密数据</param>
130 /// <param name="SecretKey">解密密钥,必须是加密时的密钥,密钥长度必须为八位有效英文字符,例如"12secret"</param>
131 public static string DecryptData(object EncryptedData ,string SecretKey)
132 {
133 try
134 {
135 string pToDecrypt = EncryptedData.ToString();
136 DESCryptoServiceProvider des = new DESCryptoServiceProvider();
137 Byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
138 for(int x = 0; x < pToDecrypt.Length / 2; x++)
139 {
140 int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
141 inputByteArray[x] = (byte)i;
142 }
143 //建立加密对象的密钥和偏移量，此值重要，不能修改
144 des.Key = ASCIIEncoding.ASCII.GetBytes(SecretKey);
145 des.IV = ASCIIEncoding.ASCII.GetBytes(SecretKey);
146 MemoryStream ms = new MemoryStream();
147 CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(),CryptoStreamMode.Write);
148 cs.Write(inputByteArray, 0, inputByteArray.Length);
149 cs.FlushFinalBlock();
150 return System.Text.Encoding.Default.GetString(ms.ToArray());
151 }
152 catch
153 {
154 return "";
155 }
156 }
157
158 #endregion
159 }
160 }
