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oee seems singular #3

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AnomalRoil opened this issue Dec 8, 2016 · 4 comments
Open

oee seems singular #3

AnomalRoil opened this issue Dec 8, 2016 · 4 comments

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@AnomalRoil
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While I was able to prove that oee has perfect secrecy, is semantically secure, benefits from the (strict) avalanche effect and is IND-CCA2, I wasn't able to prove it non-singular, which seems to be required as per Shannon (1949) definition of a secrecy system.

Do you think you may fix this issue or is it doomed?
@veorq
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veorq commented Dec 8, 2016

Shannon knew nothing about cryptography!

@AnomalRoil
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It seems like a workaround could be to rename it into "One-End Encryptions", so it'd be plural and it is well known that plural is not singular.

@real-or-random
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@AnomalRoil When trying to prove IND-CCA2, I got stuck with implementing the decryption oracle. How did you manage?

@AnomalRoil
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Yeah, there is a trick there, since it is singular, the decryption Oracle simply returns false on each query.

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@real-or-random @veorq @AnomalRoil