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Sending Message into a Definite Future: Non- Parallelizable Case
Mao, Wenbo
HPL-2000-86
Keyword(s): time-lock puzzle; zero-knowledge proof
Abstract: Please Note. This abstract contains mathematical formulae which cannot be represented here. We construct a proof of membership protocol that uses log2 t steps to prove an element to have the structure a2t (mod n) given public values n, a, t where n is the product of two large secret primes. Such a proof serves a concrete basis of trust for a time-lock puzzle scheme and its applications in timed-release cryptography. The achieved efficiency expressed in log2 t (number of modulo exponentiation) manifests plainly that the proposed proof technique is practical in the applications of timed-release crypto problems.
11 Pages
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