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  PHC 
Open Source and information security mailing list archives
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Mon, 6 Jan 2014 17:57:58 -0600 (CST)
From: Steve Thomas <>
Subject: Re: [PHC] Security concern for Catena

> On January 6, 2014 at 4:04 PM Christian Forler
> <> wrote:
> On 06.01.2014 22:02, Steve Thomas wrote:
> > I was about to implement Catena with 1/2 the memory and faster vs the
> > reference implementation.
> Cool. I'm eager to see the performance benchmarks of your
> implementation. Please contact me after you finished the implementation.

It's a little more than 2% faster and uses half the ram.
I also found another bug. Nothing that breaks security just changes the output.

You replace the data r[reverse(i, garlic)] with the new calculated value. When
do the next round you read memory sequentially because:
r[reverse(reverse(i, garlic), garlic)] == r[i]
Content of type "text/html" skipped

Powered by blists - more mailing lists