實現URL引數的加密和解密的方法

1、post/get  這個不用多說了。

2、 encrypting   querystrings   with   .net

code:

c#:

using system;

using system.io;
using system.xml;
using system.text;
using system.security.cryptography;
public class encryption64
...;
//private byte iv = ; // it can be any byte value
public static string decrypt(string stringtodecrypt,
string sencryptionkey)
...;
byte iv = ...;
byte inputbytearray = new byte[stringtodecrypt.length];
try...
catch (system.exception ex)
...}
public static string encrypt(string stringtoencrypt,
string sencryptionkey)
...;
byte iv = ...;
byte inputbytearray; 
try...
catch (system.exception ex)
...}
}

vb.net

imports system

imports system.io
imports system.xml
imports system.text
imports system.security.cryptography
public class encryption64
private key() as byte = {}
private iv() as byte = 
public function decrypt(byval stringtodecrypt as string, _
byval sencryptionkey as string) as string
dim inputbytearray(stringtodecrypt.length) as byte
trykey = system.text.encoding.utf8.getbytes(left(sencryptionkey, 8))
dim des as new descryptoserviceprovider()
inputbytearray = convert.frombase64string(stringtodecrypt)
dim ms as new memorystream()
dim cs as new cryptostream(ms, des.createdecryptor(key, iv), _
cryptostreammode.write)
cs.write(inputbytearray, 0, inputbytearray.length)
cs.flushfinalblock()
dim encoding as system.text.encoding = system.text.encoding.utf8
return encoding.getstring(ms.toarray())
catch e as exception
return e.message
end try
end function
public function encrypt(byval stringtoencrypt as string, _
byval sencryptionkey as string) as string
trykey = system.text.encoding.utf8.getbytes(left(sencryptionkey, 8))
dim des as new descryptoserviceprovider()
dim inputbytearray() as byte = encoding.utf8.getbytes( _
stringtoencrypt)
dim ms as new memorystream()
dim cs as new cryptostream(ms, des.createencryptor(key, iv), _
cryptostreammode.write)
cs.write(inputbytearray, 0, inputbytearray.length)
cs.flushfinalblock()
return convert.tobase64string(ms.toarray())
catch e as exception
return e.message
end try
end function
end class

default.aspx.cs

//加密url

protected void page_load(object sender, eventargs e)

...public string encryptquerystring(string strquerystring)
...

default2.aspx.cs

//解密url

protected void page_load(object sender, eventargs e)

...}
public string decryptquerystring(string strquerystring)
...

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