lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <20100905004453.GA12914@harry.lu>
Date: Sun, 5 Sep 2010 00:44:53 +0000
From: Harry Strongburg <harry.fd@...ry.lu>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: reCaptcha secret key - where is the point?

On Sat, Sep 04, 2010 at 11:38:38PM +0200, BlackHawk wrote:
> Reading here & there i found lot of people scared about they "secret
> key" of reCaptcha coud be publically discovered;
> But, at this moment, is kind of useless for an attacker, right? or at
> least until we find out how the reCaptcha response is calculated..

It just adds more "trust" between the site running the CAPTCHA and 
Google. It's sent in plaintext to the reCAPTCHA server, anyways.

Quoting reCAPTCHA Supprt 
(http://groups.google.com/group/recaptcha/msg/bd79e6a0efadad51):
>The security of reCAPTCHA does not rely on the private key staying 
>private. We mostly do this to discourage the sharing of accounts. 
>Please note that we use the referrer to prevent people from hosting 
>your key on their site.

So as far as I can tell, Google/reCAPTCHA only require you get a private 
key to "lock you in" to it. According to that post, there's no major 
risk if someone else has your private key, but it should stay - as the 
name implies - "private".

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ