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asp.net学习总结
7 d* {! }8 s& X3 L- f/ H; m! Sprotected void Page_Load(object sender, EventArgs e)6 p8 f; F, a. T* G
{
6 L. c* L! G1 p8 K, u# J+ a string key = GenerateKey();: V8 c% m; H- `9 J6 v
string s0 = "111111";
6 t: [* A% w3 O) R; Z string s1 = EncryptString(s0, key);
. n2 b2 W/ K: c1 R- {3 `8 g" b string s2 = DecryptString(s1, key);
# W j3 G% r+ n! R Response.Write(s0+"\\n");1 m, J; }8 _' g2 w/ R9 r
Response.Write(s1 + "\\n");3 T. [. m/ c" |% }# }
Response.Write(s2 + "\\n");
) _% g% A# m, G2 J Console.WriteLine("原串: [{0}]", s0);, F7 w3 R4 E$ ^! t4 G- C( B
Console.WriteLine("加密: [{0}]", s1);
* n9 G5 @+ Z# O4 z7 S Console.WriteLine("解密: [{0}]", s2);
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///MD5解密
V# f8 H, A0 @( T public string MD5Decrypt(string pToDecrypt, string sKey)
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+ }. P% I# G" E DESCryptoServiceProvider des = new DESCryptoServiceProvider();5 |8 W7 I% ~2 ?; b [6 ]# @7 i: f
( W. D0 d4 }) k$ g+ e byte[] inputByteArray = new byte[pToDecrypt.Length / 2];# S. }) N( w: q" T( M. j% D
for (int x = 0; x < pToDecrypt.Length / 2; x++)7 q+ R" N9 \7 L9 o) U
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int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16)); e1 D1 H& b6 E& s* N* [3 q
inputByteArray[x] = (byte)i;
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des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
/ E S) ]- e/ a3 W des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
5 K9 C. d) m* S6 F0 {7 F MemoryStream ms = new MemoryStream();+ T5 v( l$ k$ K, [; e1 L6 _
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);% \7 R7 w0 U/ ]- _
cs.Write(inputByteArray, 0, inputByteArray.Length);/ Z4 { |, _5 l% v5 u4 X
cs.FlushFinalBlock();
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! l3 t! K- X2 Z( p" R StringBuilder ret = new StringBuilder();
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return System.Text.Encoding.Default.GetString(ms.ToArray());5 A4 S: s/ e& X8 [
}
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// 创建Key0 t; x3 G& `+ |7 r! h
public string GenerateKey()
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DESCryptoServiceProvider desCrypto = (DESCryptoServiceProvider)DESCryptoServiceProvider.Create();6 g( |- I& T" ?* P: ?
return ASCIIEncoding.ASCII.GetString(desCrypto.Key);9 a. K( s0 b5 R& \( x
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// 加密字符串- C' F9 u! U4 J/ g& d
public string EncryptString(string sInputString, string sKey)
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byte[] data = Encoding.UTF8.GetBytes(sInputString);
% ~. @) V3 i p. O' [* N* ]2 g DESCryptoServiceProvider DES = new DESCryptoServiceProvider();; h; ^0 H# |$ \ G# a* u9 w
DES.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
5 i; ~+ S" N. u5 H% Q' v- M$ h DES.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
0 A( Z+ w/ g0 O3 ]$ Y ICryptoTransform desencrypt = DES.CreateEncryptor();: _- v1 e# F3 Q7 ~
byte[] result = desencrypt.TransformFinalBlock(data, 0, data.Length);- m8 W Y4 }5 V q; }) t& Q' v
return BitConverter.ToString(result);
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& Y' f$ z+ H! i1 A // 解密字符串
) Z/ f, n% C% \4 \ public string DecryptString(string sInputString, string sKey)
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string[] sInput = sInputString.Split("-".ToCharArray());
, @8 L q5 i7 ]/ C: S; ^2 e3 g byte[] data = new byte[sInput.Length];
5 G5 A2 _, c7 t% L: r" j: ?0 r for (int i = 0; i < sInput.Length; i++)5 P3 K! H- e& W
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data = byte.Parse(sInput, NumberStyles.HexNumber);6 J# n& h d1 s% I' O' Z
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DESCryptoServiceProvider DES = new DESCryptoServiceProvider();
/ \+ | j. S. I2 Y/ T2 G DES.Key = ASCIIEncoding.ASCII.GetBytes(sKey);/ ?: `" q% }$ j* O6 I |' K1 n* {" o" \9 G
DES.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
. a$ e, H7 L: N, ]6 B8 n* W ICryptoTransform desencrypt = DES.CreateDecryptor();
% `+ I4 v5 [4 v6 _' A0 {% k byte[] result = desencrypt.TransformFinalBlock(data, 0, data.Length);
: Q5 I; g: H& q3 s; z: L return Encoding.UTF8.GetString(result);8 s# c( u8 |/ u4 G
}
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