MD5 common encryption method (this method is generally not used as the encryption of user passwords)
| <% @ Page Language = "C #" %> <! Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en"
Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd> <SCRIPT runat = "server">
Protected void page_load (Object sender, eventargs E)
{
// Obtain the field to be encrypted and convert it to a byte [] Array
Byte [] DATA = system. Text. encoding. Unicode. getbytes (source. Text. tochararray ());
// Create an encryption service
System. Security. cryptography. MD5 MD5 = new system. Security. cryptography. md5cryptoserviceprovider ();
// Encrypt byte [] Arrays
Byte [] result = md5.computehash (data );
// Convert the encrypted array into a field
String sresult = system. Text. encoding. Unicode. getstring (result );
// Display
Pass_1.text = sresult. tostring ();
}
</SCRIPT> <HTML xmlns = "http://www.w3.org/1999/xhtml">
<Head runat = "server">
<Title> MD5 encryption www.itstudy.cn </title>
</Head>
<Body>
<Form ID = "form1" runat = "server">
MD5 common encryption: <asp: Label id = "pass_1" runat = "server"> </ASP: Label> <br/>
<Asp: textbox id = "Source" runat = "server" text = "test" autopostback = "true"/>
(Press ENTER)
</Form>
</Body>
</Html> |
MD5 password encryption (this is a common method)
Page:
<% @ Page Language = "C #" autoeventwireup = "true" codefile = "default. aspx. cs" inherits = "_ default" %> <! Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <HTML xmlns = "http://www.w3.org/1999/xhtml">
<Head runat = "server">
<Title> </title>
</Head>
<Body>
<Form ID = "form1" runat = "server">
<Div>
<Asp: textbox id = "textbox1" runat = "server" textmode = "password"> </ASP: textbox>
<Asp: button id = "button1" runat = "server" text = "MD5 encryption" onclick = "button#click"/>
<Asp: textbox id = "textbox2" runat = "server"> </ASP: textbox>
</Div>
</Form>
</Body>
</Html> |
BackgroundCode:
| Using system;
Using system. Collections. Generic;
Using system. LINQ;
Using system. Web;
Using system. Web. UI;
Using system. Web. UI. webcontrols; Public partial class _ default: system. Web. UI. Page
{
Protected void page_load (Object sender, eventargs E)
{
Computer c = new computer ();
}
Protected void button#click (Object sender, eventargs E)
{
// Encrypted as a password
String enpswdstr = MD5 (textbox1.text, 16 );
// Display
Textbox2.text = enpswdstr;
} Public String MD5 (string STR, int code) // code 16 or 32
{
If (code = 16) // 16-bit MD5 encryption (take 32-bit encryption 9 ~ 25 characters)
{
Return System. Web. Security. formsauthentication. hashpasswordforstoringinconfigfile (STR, "MD5"). tolower (). substring (8, 16 );
} If (code = 32) // 32-bit encryption
{
Return System. Web. Security. formsauthentication. hashpasswordforstoringinconfigfile (STR, "MD5"). tolower ();
} Return "00000000000000000000000000000000 ";
}
} |
Note: In addition to a single encryption method, you can also use multiple encryption methods to obtain a certain number of encrypted digits to form a new encryption result.
