Re: [P1363:] Review copy of ISO/IEC 11770-4
- To: STDS-P1363-DISCUSS@xxxxxxxxxxxxxxxxx
- Subject: Re: [P1363:] Review copy of ISO/IEC 11770-4
- From: D Jablon <jablon1363@xxxxxxxxx>
- Date: Wed, 19 Oct 2005 09:29:55 -0700
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- Reply-To: D Jablon <jablon1363@xxxxxxxxx>
Dear working group,
If you have more feedback on ISO/IEC 11770-4, please
send it now.
For EC settings, we've identified another
interoperability issue with ISO/IEC 11770-4 and
P1363.2.
11770-4 uses both (x,y) coordinates to derive keys and
key confirmation values, whereas P1363.2 omits the y
in key derivation (as in 1363) and uses the "drop-y"
(GE2OSP-X) representation in key confirmation.
For what it's worth, I think P1363.2 omitted y in key
derivation to align with analogous 1363-2000 methods.
I don't recall why we chose the "drop y" in key
confirmation, if there was a reason. And I don't know
why ISO/IEC specified these differently.
-- David
At 09:31 AM 10/7/2005 -0700, D Jablon wrote:
>Dear group,
>
>I volunteered to collect our feedback on FDIS 11770-4
>and forward it by 10/17.
>Please send me what you have ASAP.
>[...]
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