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8:02 PM
2
Q: Shamir secret sharing where some specific people are required to participate

Chygo RunnerBy using SSSS we distribute the key to "N" people where any "k" (N>=k) are required to participate to unlock the code. But what if I wish to have the people "x" and "y" always be part of "k". Any provisions for that??

 
 
2 hours later…
10:12 PM
1
Q: Any advantage to a block cipher which is not efficiently invertible?

eddydee123The classic definition of a PRP includes efficient invertibility. Given that many modern cipher modes (CTR-based e.g. GCM) use only the forward direction of the block cipher, it seems that the efficient invertibility part of the definition is not actually necessary for practical purposes. Would s...

 

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