[krbdev.mit.edu #5840] Prevent kadm5_decrypt_key() from coercing the keytype if the requested ktype == -1

[Jeffrey Altman via RT]

Ken Raeburn via RT wrote:
> On Nov 9, 2007, at 15:14, Jeffrey Altman via RT wrote:
>> Please review this patch to kadm5_decrypt_key().  This patch prevents
>> the returned keyblock's enctype from being coerced to the requested
>> 'ktype' if the requested 'ktype' == -1.  A ktype of -1 is to be  
>> ignored.
>
> Is the use of -1 here something that is already happening elsewhere,  
> or something you're adding?  I thought we had 0 as the magic enctype  
> value elsewhere, maybe I'm wrong.
>
> Ken
Please read the comment at the top of the function.  -1 means that the
ktype value should be ignored when searching for the correct keyblock entry.