Get an update on changes of the IACR web-page here. For questions, contact newsletter (at) iacr.org. You can also receive updates via:
To receive your credentials via mail again, please click here.
You can also access the full news archive.
function built around the Merkle-Damgard hash function H. It supports
large [pseudo]random salt values ( 128-bit) and password lengths.
ZAP (or, equivalently, non-interactive zero-knowledge in the common random string model) from indistinguishability obfuscation and one-way functions.
NIWIs from indistinguishability obfuscation and one-way permutations.
The previous construction of ZAPs [Dwork and Naor, FOCS 00] was based on trapdoor permutations. The two previous NIWI constructions were based either on ZAPs and a derandomization-type complexity assumption [Barak, Ong, and Vadhan CRYPTO 03], or on a specific number theoretic assumption in bilinear groups [Groth, Sahai, and Ostrovsky, CRYPTO 06].