Date: Sun, 15 Dec 2013 23:15:45 -0500 (EST) From: Benjamin Kaduk <bjk@freebsd.org> To: Hiroki Sato <hrs@freebsd.org> Cc: bjk@freebsd.org, src-committers@freebsd.org, svn-src-stable@freebsd.org, svn-src-all@freebsd.org, gjb@freebsd.org, svn-src-stable-8@freebsd.org Subject: Re: svn commit: r259449 - in stable/8: . crypto/heimdal/lib/gssapi/krb5 sys/sys Message-ID: <alpine.GSO.1.10.1312152313540.27579@multics.mit.edu> In-Reply-To: <20131216.130052.128049839311409145.hrs@allbsd.org> References: <201312160230.rBG2UvH5008664@svn.freebsd.org> <20131216034043.GK1446@glenbarber.us> <alpine.GSO.1.10.1312152248100.27579@multics.mit.edu> <20131216.130052.128049839311409145.hrs@allbsd.org>
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On Mon, 16 Dec 2013, Hiroki Sato wrote: > Benjamin Kaduk <bjk@FreeBSD.org> wrote > in <alpine.GSO.1.10.1312152248100.27579@multics.mit.edu>: > > bj> On Sun, 15 Dec 2013, Glen Barber wrote: > bj> > bj> > On Mon, Dec 16, 2013 at 02:30:57AM +0000, Benjamin Kaduk wrote: > bj> >> Author: bjk (doc committer) > bj> >> Date: Mon Dec 16 02:30:56 2013 > bj> >> New Revision: 259449 > bj> >> URL: http://svnweb.freebsd.org/changeset/base/259449 > bj> >> > bj> >> Log: > bj> >> MFC r259286,259424,259425: > bj> >> Apply patch from upstream Heimdal for encoding fix > bj> >> > bj> >> RFC 4402 specifies the implementation of the gss_pseudo_random() > bj> >> function for the krb5 mechanism (and the C bindings therein). > bj> >> The implementation uses a PRF+ function that concatenates the output > bj> >> of individual krb5 pseudo-random operations produced with a counter > bj> >> and seed. The original implementation of this function in Heimdal > bj> >> incorrectly encoded the counter as a little-endian integer, but the > bj> >> RFC specifies the counter encoding as big-endian. The implementation > bj> >> initializes the counter to zero, so the first block of output (16 > bj> >> octets, > bj> >> for the modern AES enctypes 17 and 18) is unchanged. (RFC 4402 > bj> >> specifies > bj> >> that the counter should begin at 1, but both existing implementations > bj> >> begin with zero and it looks like the standard will be re-issued, with > bj> >> test vectors, to begin at zero.) > bj> >> > bj> > > bj> > This breaks stable/8 build. > bj> > bj> Looking... > > It seems tsize = min(desired_output_len, output.length) and > /output.length/tsize/ just after the p+= line are missing for > stable/9 and /8. Yes, a difference between heimdal 1.1 and 1.5.1. I was not happy that Nico put an unrelated change in the bug fix, but for head it is best to take upstream's patch as-is, to avoid causing conflicts for future imports. The fix is just to revert the unrelated hunk of the patch to prf.c. -Ben
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