Re: [Jsdsi-users] extending jsdsi.Tag

[Sean R. <sra...@ae...>]

On Wed, 2004-04-28 at 18:38, Guillermo Navarro wrote:
> Hi,
> 
> Thanks for your interest. I'm still working on it and as you said I
> may find a way to encode the tags so I can use the existing tags (I'm
> testing several approaches). 
> 
> At the moment I use a tag which looks like:
> 
> (tag (my-kind-of-auth (index 3) (id 453455) (val <byte-string>)))
> 
> It is an element of a hash chain. The "val" is an element "index" of
> the hash chain "id".
> 
> The intersection function, is something like: given two tags, the
> resulting intersection is the one with a lower index, only if both
> id's are equal, and we can verify the value of the corresponding hash,
> otherwise the intersection is null.
> 
As an idea, could the 'index' be a SetTag, where index 3 equates to
(index (* set 1 2 3)). Therefore the intersection of (index (* set 1 2 3
4)) and (index (* set 1 2)) is (index (* set 1 2)).

Unsure of what you mean about verifying the value of the hash. Is the
hash the bytes-string in (val (byte-string))? What is it a hash of?


> As I said, I'm still working on it and I'm not sure how will it end
> (if this ends in anything). I will let you know more details as soon
> as I have more details or something more sound (I'm in a very
> primitive stage). Thanks anyway.
> 
That's fine. Will be glad to try and help.

Regards,

Sean


-- 
Dr. Sean Radford, MBBS, MSc
sra...@ae...
http://www.aegeus-technology.com