Community discussion forum

Back to discussion

Create Hashes - MD5, SHA1, SHA256, SHA384, SHA512

Last post was 27 Jul 2008 at 15:07
Tags: .net United Kingdom
This is a comment thread discussing Create Hashes - MD5, SHA1, SHA256, SHA384, SHA512
  • 9 years ago

    This thread is for discussions of Create Hashes - MD5, SHA1, SHA256, SHA384, SHA512 .

    Report abuse
  • Advertisement

    Simply the fastest line-level profiler for .NET ever

    “The low overhead means it has minimal impact on the execution of my program”
    Mark Everest, Development Team Leader, Renault F1 Team Ltd.

    Try out the new ANTS Profiler 4 for yourself. Download your 14-day trial now

  • 4 years ago

    For SHA1 and MD5 you can simply use:


    string hashedText = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile("some text", "sha1");

    Report abuse
  • 4 years ago

    To get the same result as the md5() function in PHP, use ASCIIEncoding!
    As in: ASCIIEncoding UE = new ASCIIEncoding();


    Another note:
    Yes, there is a simpeler way to do md5 and sha1, but if i have a class for SHA256, 384 and 512, I'd like to combine all of them into one not doing 512 with the class and sha1 with something else.

    Report abuse
  • 4 years ago

    Note, the author wrote that the result of a Hash is unique.  This is NEVER the case for a hash function.  Hashes are consistent.  Given a hash function H and a value a, H(a) = H(a) (i.e., hashes aren't random in a way which varies invocation to invocation.


    But given a,b with a!=b it is not true that H(a) != H(b).  Indeed for any digest hash one can find a,b with a!=b and H(a) = H(b).


    BE WARNED.  Never hash something that is used as a primary key.  E.g., HASH passwords but never hash usernames.

    Report abuse
  • 2 years ago

    Thanks a lot

    Report abuse
  • 2 years ago

    Hi,

    I'm using SHA1 to hash the some code in vb.net(desktop app). but when i create SHA1 in PHP it doesn't match with the one i created with vb.net.I filtered out all the special chars in hash generated using vb.net (like =,+ etc).The hash thus trimmed out is only 20-22 chars but when i used php itz above 30. Pls help me

    Tom

    Report abuse
  • 1 year ago

    Is it possible to hash files instead of text? I know I can do it with MD5 and SHA1 (with a FileStream and "System.Security.Cryptography.MD5CryptoServiceProvider" and "System.Security.Cryptography.SHA1CryptoServiceProvider")

    but when I tried generated any others it gave me a diffrent hash every time(SHA256,SHA384 and SHA512)...



    Report abuse
  • 1 year ago

     Hi just like jitz I am struggling to realise a result that matches the SHA1 result when using php can anybody help clarify how to get the same result pls

    Report abuse
  • 4 months ago

    Maybe you will find this post adds more light to the issue.

    Report abuse
  • 4 months ago

    I'm sure you've found the answer by now, but in case anybody else is on the same quest, maybe this will help:

    Porting the Equivalent of PHP’s MD5 to .NET platform in C#

     

    Report abuse

Post a reply

Enter your message below

Sign in or Join us (it's free).

Ask a question

Related discussion

Related articles

Quick links

Recent activity

Languages

Web Development

Frameworks & Architecture

Other major sections