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  • 9 votes cast
Apr
22
awarded  Revival
Apr
21
revised Are there simpler FHE methods than Craig Gentry's original paper?
added 7 characters in body
Apr
21
answered Are there simpler FHE methods than Craig Gentry's original paper?
Apr
19
revised How to run a (provably probably) secure global referendum?
added 212 characters in body
Apr
19
answered How to run a (provably probably) secure global referendum?
Apr
18
revised Possible problems in using a hash algorithm to construct a stream cipher
deleted 6 characters in body
Apr
18
revised Possible problems in using a hash algorithm to construct a stream cipher
added 165 characters in body
Apr
18
revised Possible problems in using a hash algorithm to construct a stream cipher
added 4 characters in body
Apr
18
revised Possible problems in using a hash algorithm to construct a stream cipher
added 62 characters in body
Apr
18
revised Possible problems in using a hash algorithm to construct a stream cipher
added 36 characters in body
Apr
18
answered Possible problems in using a hash algorithm to construct a stream cipher
Jan
27
revised LR-Oracle Experiment in Lindell and Katz
added 35 characters in body
Jan
27
comment LR-Oracle Experiment in Lindell and Katz
Questions (1) and (2) have been answered by @Yehuda Lindell in the comments section of the answer to this post: crypto.stackexchange.com/questions/32181/…
Jan
27
revised LR-Oracle Experiment in Lindell and Katz
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Jan
27
comment Encryption Oracle Avoidance
A couple of questions: (1) Is it safe to assume that its OK to provide an encryption oracle to a CPA adversary so long as the encryption scheme $\pi$ has the property that for multiple encryptions $Pr[PrivK^{LR cpa}_{\mathcal{A},\pi}(n)=1]≤1/2+negl(n)$ (in the notation of Lindell and Katz),i.e, its safe to provide an oracle so long as the scheme is CPA secure for multiple encryptions, (2)If not, what is the exact definition that tells me when it's secure to expose an encryption oracle to a CPA adversary (3)for a CPA secure scheme, adding authentication additionally provides CCA security ?
Jan
27
revised LR-Oracle Experiment in Lindell and Katz
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Jan
27
revised LR-Oracle Experiment in Lindell and Katz
added 77 characters in body
Jan
27
revised LR-Oracle Experiment in Lindell and Katz
added 36 characters in body
Jan
27
revised LR-Oracle Experiment in Lindell and Katz
added 36 characters in body
Jan
26
asked LR-Oracle Experiment in Lindell and Katz