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Re: GSSAPI signing/encryption for unsuspectingly applications (its not a bug)
--On May 14, 2009 3:05:25 PM -0700 Howard Chu <firstname.lastname@example.org> wrote:
Quanah Gibson-Mount wrote:
--On May 14, 2009 2:22:46 PM -0700 Howard Chu<email@example.com> wrote:
Secondly it seems so that Cyrus SASL code does not support SSF larger
than 56 for GSSAPI based signing/encryption (aka integrity/confidential
Also wrong, Cyrus SASL/GSSAPI is known to work with up to ssf=112.
Hm, I thought for the GSSAPI mech, it was hard coded to 56. I've
certainly not seen it higher even with newer enc types that were at much
higher encryption levels.
Read TF code.
/* Heimdal and MIT use the following */
# ifdef GSS_KRB5_CONF_C_QOP_DES3_KD
# define K5_MAX_SSF 112
But that's behind a further ifdef:
which seems to only get set if you specifically set that at compile time.
I certainly don't find it defined in any files generated from configure in
/* All Kerberos implementations support DES */
#define K5_MAX_SSF 56
So I stand behind it being hard coded at 56 for pretty much anyone.
Principal Software Engineer
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