Re: [PATCH 10/22] gss_krb5: Add upcall info indicating supported kerberos enctypes

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On 04/14/2010 03:50 PM, Kevin Coffman wrote:
> On Wed, Apr 14, 2010 at 3:32 PM, Steve Dickson <SteveD@xxxxxxxxxx> wrote:
>> On 04/14/2010 02:51 PM, Kevin Coffman wrote:
>>>
>>> Hi Steve,
>>> This surprises me.  I believe this would result in DES being used
>>> rather than the stronger enctypes.  Can you give me more details of
>>> the problems you saw?
>>
>> In limit_krb5_enctypes(), if I did not give gss_set_allowable_enctypes()
>> the list of enctypes in an increasing order, creating the krb5 context for
>> root would fail. When gave them in order root got its context...
>>
>> I figured it was some type of krb5 lib quirk, since the default enctypes
>> are also in increasing order...
>>
>> steved.
> 
> Note that I have seen the DES preferences listed as both 3,1,2 and 1,3,2.
> 
> The default list in limit_krb5_enctypes() is [ENCTYPE_DES_CBC_CRC,
> ENCTYPE_DES_CBC_MD5, ENCTYPE_DES_CBC_MD4], or 1,3,2
> 
> I suspect there must have been some other issue when you tested?
Not that I saw... when I made that kernel change, rebooted, restarted
everything, I never saw the problem again... 

steved.
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