[Cryptography] Posting the keys/certs for: Two distinct DSA keys sign a file with the same signature. Is this repudiation issue?

Peter Gutmann pgut001 at cs.auckland.ac.nz
Thu Sep 29 00:32:15 EDT 2016


Ron Garret <ron at flownet.com> writes:

>In this case the fix is trivial: add a line of code that rejects any key 
>whose multiplicative order is too small.

Isn't this a bit like saying that the fix for Linux kernel bugs is also
trivial: Wherever there's a kernel bug, add a line of code that fixes it.

(Evaluating multiplicative orders, from a quick look at Bach & Shallit's
 "Algorithmic Number Theory", isn't exactly a one-liner).

Peter.


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