ietf-openpgp
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Re: Non-SHA-1 fingerprints

2009-05-04 20:33:13

On May 4, 2009, at 6:04 PM, Daniel A. Nagy wrote:

Also, since mobile phones typically have a numeric keypad, it would be nice if fingerprints and key IDs were numeric-only. It is an increasingly important
platform for OpenPGP, I believe.

I think that is a good point and a great idea, but the only reason that fingerprints and key IDs are printed in hex now is tradition. There is nothing in the standard one way or another about how humans should consume fingerprints. You could even do it with the current V4 fingerprints: just as my key fingerprint is 7D92FD313AB6F3734CC59CA1DB698D7199242560 in hex, it is equally correct as 716901811312187285520504099705403090347495794016 in decimal. The big problem I see here is that's it's an awfully long number to type into a mobile keypad. (Well, that, and persuading the various implementations to support the decimal format in addition to the traditional hex).

David