Re: pgcrypto decrypt_iv() issue

On Fri, Jan 27, 2012 at 12:13:21PM -0500, Tom Lane wrote:
> Marko Kreen <markokr@gmail.com> writes:
> > pgcrypto.c is easily fixable and internal.c has proper checks.
> > But openssl.c does not.  And I have a bigger openssl.c cleanup
> > pending.  So I would prefer to add missing checks to cleaned-up
> > openssl.c and post them together (soonish).
>
> > But I'm bit unclear about fate of /contrib cleanup patches vs. 9.2,
> > so if they won't get in, it's ok to apply quick fixes to current tree,
> > it won't inconvinience me much.
>
> I think we should fix and back-patch these two specific bugs.  The
> openssl.c change sounds like it might be something for HEAD only.

Now I looked more in-depth and seems my comments were off - error
detection for encrypt()/decrypt() happens in px.c not in
internal.c/openssl.c.  Latter ones simply validate internal APIs.

So attached patch should be enough to fix the issue.
And it should be quite backportable.

--
marko