search for: koblitz

Displaying 2 results from an estimated 2 matches for "koblitz".

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2013 Sep 14
0
ECDSA curve used in new protocol has suspicious seed value
...uld use secp256k1 for example, which does not use an unexplained seed value), so this is mainly a heads-up and maybe a request to change to any widely accepted curve that might emerge in the future for that key size. I don't know enough about ECDSA to give any more input than: The next largest Koblitz-curve would be sect571k which still has 256 bit strength, maybe it would be possible to use this one. I'll let people more intimate with crypto in general, openssl in particular and tinc sort this out though, since it uses a different finite field (F2^m). Stay safe and thank you for tinc, Mark...
2015 Jul 24
2
DH_GRP_MIN is currently 1024, should it be bumped to 2048?
Greetings, Given the weakness with Diffie-Hellman modp groups less than 2048, is it time to bump the suggested 1024 bit minimum value from the RFC 4419 to a more current 2048 value for OpenSSH 7.0? If so, should this be just a compile-time change, or should there be a new client and server runtime option? Thanks, -- Mark