Jump to content

Welcome to MSFN Forum
Register now to gain access to all of our features. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more. This message will be removed once you have signed in.
Login to Account Create an Account



Photo

Hashes in Security Catalogs


  • Please log in to reply
6 replies to this topic

#1
mraeryceos

mraeryceos

    Member

  • Member
  • PipPip
  • 198 posts
  • Joined 11-April 04

When I take the hash of a file, and compare it with the hash in the Security Catalog, it doesn't match up.  Maybe the hash listed in the catalog is not of the whole file, just important parts of the file?  If so, is there a tool that will calculate the hash in the Microsoft way?  I could use makecat, but it is a pain having to make a text file before getting the hash.  I haven't tried it yet, so neither do I know if it will work.

 

Also, I can see a list of hashes in the cat file, but I don't know the corresponding filenames.  Is there a cat file viewer that lists the filenames that correspond with the hashes?




How to remove advertisement from MSFN

#2
MagicAndre1981

MagicAndre1981

    after Windows 7 GA still Vista lover :)

  • Patrons
  • 6,214 posts
  • Joined 28-August 05
  • OS:Windows 8 x64
  • Country: Country Flag

Donator

which hash have you calculated. This should be SHA-1 hash which MS uses.


Posted Image

#3
mraeryceos

mraeryceos

    Member

  • Member
  • PipPip
  • 198 posts
  • Joined 11-April 04

I calculated SHA-1, using a program called Hash.

I searched for the this hash inside the cat files, using a program that searches within files, but can't find it.

If I search with this program for a hash I know is in one of the cat files, I can find it


Edited by mraeryceos, Yesterday, 10:50 PM.


#4
mraeryceos

mraeryceos

    Member

  • Member
  • PipPip
  • 198 posts
  • Joined 11-April 04

Hopefully with the last edit, what I was trying to say makes sense!



#5
MagicAndre1981

MagicAndre1981

    after Windows 7 GA still Vista lover :)

  • Patrons
  • 6,214 posts
  • Joined 28-August 05
  • OS:Windows 8 x64
  • Country: Country Flag

Donator

also try to calculate MD5 and SHA-256
Posted Image

#6
mraeryceos

mraeryceos

    Member

  • Member
  • PipPip
  • 198 posts
  • Joined 11-April 04

http://en.wikipedia...._Hash_Algorithm

The hashes in the Security Catalog, are SHA1 in length



#7
Glenn9999

Glenn9999

    Senior Member

  • Member
  • PipPipPipPip
  • 689 posts
  • Joined 23-April 07
  • OS:Windows 8 x64
  • Country: Country Flag

I calculated SHA-1, using a program called Hash.

 

Where might one obtain this program?  I get the feeling that checking its output against a known good SHA-1 generator will reveal this "Hash" program to be in error, if you are getting the values right out of the security catalogs.






1 user(s) are reading this topic

1 members, 0 guests, 0 anonymous users


    Glenn9999