[Cryptography] Cipher death notes

Lodewijk andré de la porte l at odewijk.nl
Wed Apr 1 10:40:34 EDT 2015

2015-04-01 20:22 GMT+09:00 ianG <iang at iang.org>:

> We can imagine the WGs worrying about the security effects of that.  Can
> someone craft a virus that turns off *all* ciphers?  If the IoT thing is 20
> years old and switches the cooling water on a NY nuclear powerstation, is
> it clearly more secure by eliminating its 20 year old cipher?  Does the
> fallback to cleartext make the effect of the last cipher dropping off
> worse?  Is letting someone hack the cipher worse or better than disabling
> access?

It would probably decline all communication (fail to negotiate a protocol),
which seems fine to me.
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