is there any post-quantum public-key encryption that achieves "key-privacy" (IK-CPA, IK-CCA) as described in this paper?
I saw one code-based public-key encryption construction, but I wonder if there is any lattice-based construction.
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As per the following discussion, we can see that NTRU scheme is secure against CPA and CCA. Please let me validate if it offers IK-CPA, IK-CCA . https://crypto.stackexchange.com/questions/33769/which-attacks-are-possible-against-raw-textbook-ntru-encryption – Gokul Alex Jun 16 '20 at 19:49