DotNet中用到的加密算法总结_ASP.NET技巧

1public class CryptUtil

2 {

3 public static string DecryptString(string input)

4 {

5 if (input.Equals(string.Empty))

6 {

7 return input;

8 }

9

10 byte[] byKey = {0x63, 0x68, 0x65, 0x6E, 0x79, 0x75, 0x61, 0x6E};

11 byte[] IV = {0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10};

12 byte[] inputByteArray = new Byte[input.Length];

13 DESCryptoServiceProvider des = new DESCryptoServiceProvider();

14 inputByteArray = Convert.FromBase64String(input);

15 MemoryStream ms = new MemoryStream();

16 CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write);

17 cs.Write(inputByteArray, 0, inputByteArray.Length);

18 cs.FlushFinalBlock();

19 Encoding encoding = new UTF8Encoding();

20 return encoding.GetString(ms.ToArray());

21 }

22

23 public static string EncryptString(string input)

24 {

25 if (input.Equals(string.Empty))

26 {

27 return input;

28 }

29

30 byte[] byKey = {0x63, 0x68, 0x65, 0x6E, 0x79, 0x75, 0x61, 0x6E};

31 byte[] IV = {0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10};

32 DESCryptoServiceProvider des = new DESCryptoServiceProvider();

33 byte[] inputByteArray = Encoding.UTF8.GetBytes(input);

34 MemoryStream ms = new MemoryStream();

35 CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write);