Home > Developer > ASP

ASP. NET encryption Password

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞
In ASP, encryption objects are not provided. We can only use external objects for encryption. Now, the encryption solution is provided in ASP. NET. The namespace system. Web. Security contains the formsauthentication class. There is a method hashpasswordforstoringinconfigfile. This method can convert the characters provided by the user into garbled characters, store them, and even store them in cookies.

Hashpasswordforstoringinconfigfile is easy to use. It supports "sha1" and "MD5" encryption algorithms.

The following code demonstrates its usage in a simple way:
<% @ Page Language = "C #" %>
<% @ Import namespace = "system. Web. Security" %>
<HTML>
<Head>
<Script language = "C #" runat = "server">
Public void encryptstring (Object sender, eventargs E)
{
Sha1.text = formsauthentication. hashpasswordforstoringinconfigfile (txtpassword. Text, "sha1 ");
Md5.text = formsauthentication. hashpasswordforstoringinconfigfile (txtpassword. Text, "MD5 ");
}
</SCRIPT>
</Head>
<Body>
<Form runat = "server" id = "form1">
<P>
<B> original clear text password: </B>
<Br>
<Asp: textbox id = "txtpassword" runat = "server"/>
<Asp: button runat = "server" text = "encrypt string" onclick = "encryptstring" id = "button1"/>
</P>
<P>
<B> encrypted password in sha1: </B>
<Asp: Label id = "sha1" runat = "server"/>
</P>
<P>
<B> encrypted password in MD5: </B>
<Asp: Label id = "MD5" runat = "server"/>
</P>
</Form>
</Body>
</Html>
As you can see, this is easy to use. We can encapsulate this encryption program in a function to facilitate repeated use. The Code is as follows:

Public String encryptpassword (string passwordstring, string passwordformat)
{
If (passwordformat = "sha1 "){
Encryptpassword = formsauthortication. hashpasswordforstoringinconfigfile (passwordstring, "sha1 ");
}
Elseif (passwordformat = "MD5 ")
{Encryptpassword = formsauthortication. hashpasswordforstoringinconfigfile (passwordstring, "MD5 ");
}
Else
{
Encryptpassword = "";
}

We can add a field to the database and use insert to store the encrypted password into the database as a string. When a user logs in, he/she can compare the password encryption result entered by the user with the correct result in the database. This method is used to verify the correctness of the password.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More