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re:X.509 extensions

1994-01-31 08:38:00
Raj:

More seriously, does any one see a need for the following extension to
the SIGNED macro ?

A certificate signature needs to include the serial number of the 
signers
public key certificate that can be used to verify it, and (/or) the 
date
the signature was generated.

There is an enhanced version of the SIGNED and SIGNATURE macros defined 
in the GULS standard (DIS 11586-1).  These are parameterized types 
(which are a macro replacement construct in the 93 ASN.1 standards) 
called GULS SIGNED and GULS SIGNATURE.  It is expected that these will 
ultimately supercede the X.509 SIGNED and SIGNATURE.

The GULS SIGNED and SIGNATURE correct several deficiencies in the X.509 
SIGNED and SIGNATURE.  One is to include optional fields to convey CA 
name and certificate serial number.

The GULS DIS is currently out for ballot; closing April 7 at ISO level 
(earlier at ANSI level) if anyone wants to look into this more closely.

...Warwick Ford  

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