Re: 'Padding Oracle' Crypto Attack Affects Millions of ASP.NET Apps

2010-09-27 Thread Thai Duong
On Wed, Sep 15, 2010 at 11:07 AM, Peter Gutmann wrote: > Tom Ritter writes: > >>What's weird is I find confusing literature about what *is* the default for >>protecting the viewstate. > > I still haven't seen the paper/slides from the talk so it's a bit hard to > comment on the specifics, but if

Re: 'Padding Oracle' Crypto Attack Affects Millions of ASP.NET Apps

2010-09-28 Thread Thai Duong
On Sat, Sep 18, 2010 at 8:43 PM, Peter Gutmann wrote: >>I'm one of the authors of the attack. Actually if you look closer, you'll see >>that they do it wrong in many ways. > > The FormsAuth as well, not just the view state?  Interesting, I thought they > had that one right, at least. We promised

Re: 'Padding Oracle' Crypto Attack Affects Millions of ASP.NET Apps

2010-09-28 Thread Thai Duong
On Tue, Sep 28, 2010 at 12:49 PM, Peter Gutmann wrote: > Ye gods, how can you screw something that simple up that much?  They use the > appropriate, and secure, HMAC-SHA1 and AES, but manage to apply it backwards! I guess they just follow SSL. BTW, they screw up more badly in other places. Down