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Can someone explain how pwdhash works?
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kiya
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Default Can someone explain how pwdhash works? - 06-14-2013, 16:34 | posts: 137 | Location: India

I just learned about the pwdhash add-on for Firefox, i looked up the description but i am slightly confused as to how it works..

Quote:
PwdHash is an browser extension that transparently converts a user's password into a domain-specific password. The user can activate this hashing by choosing passwords that start with a special prefix (@@) or by pressing a special password key (F2). PwdHash automatically replaces the contents of these password fields with a one-way hash of the pair (password, domain-name). As a result, the site only sees a domain-specific hash of the password, as opposed to the password itself. A break-in at a low security site exposes password hashes rather than an actual password. We emphasize that the hash function we use is public and can be computed on any machine which enables users to login to their web accounts from any machine in the world. Hashing is done using a Pseudo Random Function (PRF).
Can some one please explain these 2 things to me-
1. one-way hashes
2. domain specific hash
   
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mbk1969
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Default 06-14-2013, 16:55 | posts: 1,469 | Location: Moscow, Russia

Quote:
Originally Posted by kiya View Post
I just learned about the pwdhash add-on for Firefox, i looked up the description but i am slightly confused as to how it works..

Can some one please explain these 2 things to me-
1. one-way hashes
2. domain specific hash
I guess, "one-way hash" is the term born in marketing department. Every hash means (and tries) to be one-way - i.e. non-revertable, non-decryptable.

And domain specific hash can mean that even if you type the same password for every site you are logging in, adding the domain name to the actual password makes the hashes (i.e. passwords in the eyes of domains) unique for every domain (i.e. site).

Last edited by mbk1969; 06-14-2013 at 17:00.
   
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kiya
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Default 06-16-2013, 00:19 | posts: 137 | Location: India

thanks, i just searched the internet for what hashes are and how they work, now i understand it. Thanks..
   
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