[rdfweb-dev]

[Ben Pirt]

On 4 Feb, 2004, at 09:47, Ian Davis wrote:

> Hi Morten,
>
>>> property: foaf:mboxsha1sum (clarification)
>>> ==========================
>>> Other things that need fixing: clarification to mboxsha1sum re 
>>> leading
>>> 0s. Suggestions on this would be welcomed.
>> I haven't read the sha1 spec, but it seems to me that the leading 0s
>> should be preserved. Also, there are some casing issues with
>> case-insentive hostnames that should be clarified/resolved...
> This shouldn't be a problem since the sha1 is the hash of a URI and
> , since URIs are opaque identifiers, one shouldn't examine the case of
> the characters that make up the URI. This is wider RDF issue anyway
> since the URIs mailto:iand at internetalchemy.org and
> mailto:IanD at InternetAlchemy.org are different identifiers even though
> they identify the same resource.
>
Even though they are different identifiers, mail to both of these 
addresses would reach the same recipient.
In terms of usability, if I knew you email address and wanted to look 
up your foaf and you had used capitals, but I used IanD then from the 
sha1 I wouldn't be able  to find you. I think this is quite a major 
issue.
Personally, I think the spec should state that the sha1 hash is made up 
of the mailto: plus the lower case email address, this way we can be 
sure of a certain match and it would make the whole network more 
reliable when it comes to looking people up.

Regards,

Ben Pirt
http://www.pirt.co.uk



>
> Ian
>
> -- 
> http://internetalchemy.org | http://purl.org/NET/iand
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