Wrox Programmer Forums
Go Back   Wrox Programmer Forums > .NET > Other .NET > General .NET
|
General .NET For general discussion of MICROSOFT .NET topics that don't fall within any of the other .NET forum subcategories or .NET language forums.  If your question is specific to a language (C# or Visual Basic) or type of application (Windows Forms or ASP.Net) try an applicable forum category. ** PLEASE BE SPECIFIC WITH YOUR QUESTION ** When posting here, provide details regarding the Microsoft .NET language you are using and/or what type of application (Windows/Web Forms, etc) you are working in, if applicable to the question. This will help others answer the question without having to ask.
Welcome to the p2p.wrox.com Forums.

You are currently viewing the General .NET section of the Wrox Programmer to Programmer discussions. This is a community of software programmers and website developers including Wrox book authors and readers. New member registration was closed in 2019. New posts were shut off and the site was archived into this static format as of October 1, 2020. If you require technical support for a Wrox book please contact http://hub.wiley.com
 
Old April 15th, 2004, 08:52 AM
Registered User
 
Join Date: Apr 2004
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Default SHA1 Encryption/Decryption help

Hi:

Can someone help me in decrypting a string that has been encrypted in the manner below?:

=== Start Encryption ===
public static byte[] EncryptPassword(string password)
{
    UnicodeEncoding encoding = new UnicodeEncoding();
    byte[] hashBytes = encoding.GetBytes( password );

    // compute SHA-1 hash.
    SHA1 sha1 = new SHA1CryptoServiceProvider();
    byte[] cryptPassword = sha1.ComputeHash ( hashBytes );

    return cryptPassword;
}
=== End Encryption ===


 
Old April 15th, 2004, 04:39 PM
Friend of Wrox
 
Join Date: Jun 2003
Posts: 839
Thanks: 0
Thanked 1 Time in 1 Post
Default

Can't be done.

SHA1 is a hashing algorithm, the whole point of which is to provide a one-way hash of an input string (byte array, actually).

Jeff Mason
Custom Apps, Inc.
www.custom-apps.com
 
Old April 16th, 2004, 03:12 PM
planoie's Avatar
Friend of Wrox
 
Join Date: Aug 2003
Posts: 5,407
Thanks: 0
Thanked 16 Times in 16 Posts
Default

Please don't cross post. Most of us monitor more than one forum category and we'll see your question. See this thread.





Similar Threads
Thread Thread Starter Forum Replies Last Post
Encryption/Decryption with rijndael ?!? vbmo Classic ASP Basics 3 November 17th, 2009 04:14 AM
Encryption/Decryption Problem param99 SQL Server 2000 4 December 14th, 2006 05:20 AM
Encryption and Decryption kvanchi General .NET 1 February 2nd, 2005 02:04 PM
Encryption and Decryption kvanchi General .NET 2 January 24th, 2005 02:52 PM
SHA1 Encryption/Decryption help kakko72 VS.NET 2002/2003 7 November 15th, 2004 07:20 PM





Powered by vBulletin®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright (c) 2020 John Wiley & Sons, Inc.