decrypt an encrypted string with MD5CryptoServiceProvider

Question

0.00/5 (No votes)

See more:

Hi friends. i encrypted some passwords with MD5CryptoServiceProvider and stored in database. how can i decrypt them and show the original script?
Thank in advanced.

Posted 8-Aug-12 21:11pm

Pooyan Behroozfar

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

MarqW · Accepted Answer · 2012-08-12T21:47:00

Solution 1

You can't. MD5 is a hashing function, which are (generally) one-way. If you want to encrypt and decrypt, you'll want to look at using something like AES.

Posted 12-Aug-12 21:47pm

MarqW

Comments

Pooyan Behroozfar 14-Aug-12 1:27am

i have saved a lot of passwords that encrypted and saved in my database. when the user's forget their passwords i want to show that. what can i do?

MarqW 14-Aug-12 2:35am

Most systems never let you actually view the old/current password, they actually just let you set a new one. Usually you'll see an option like "Reset Password", you'll see these never ask for the old password, only a new one, and is usually done by an administrator (to prevent any user resetting any other user's password and thus gaining access).

Hope that helps, if so, please accept and rate; Thanks

Pooyan Behroozfar 15-Aug-12 0:05am

Thanks a lot my friend. could you help me on AES? do you have some reference?

MarqW 15-Aug-12 2:41am

http://www.codeproject.com/Articles/165844/WCF-Client-Server-Application-with-Custom-Authenti has some code showing you how to use System.Security.Cryptography.AesCryptoServiceProvider