|
Zapiski Nauchnykh Seminarov POMI, 2008, Volume 358, Pages 54–76
(Mi znsl2145)
|
|
|
|
This article is cited in 1 scientific paper (total in 1 paper)
Time hierarchies for cryptographic function inversion with advice
E. A. Hirscha, D. Yu. Grigor'evb, K. V. Pervyshevcd a St. Petersburg Department of V. A. Steklov Institute of Mathematics, Russian Academy of Sciences
b Institute of Mathematical Research of Rennes
c Saint-Petersburg State University
d University of California, San Diego, Department of Computer Science and Engineering
Abstract:
We prove a time hierarchy theorem for inverting functions computable in a slightly non-uniform polynomial time. In particular, we prove that if there is a strongly one-way function then for any $k$ and for any polynomial $p$, there is a function $f$ computable in linear time with one bit of advice such that there is a polynomial-time probabilistic adversary that inverts $f$ with probability $\ge1/p(n)$ on infinitely many lengths of input while all probabilistic $O(n^k)$-time adversaries with logarithmic advice invert $f$ with probability less than $1/p(n)$ on almost all lengths of input.
We also prove a similar theorem in the worst-case setting, i.e., if $\mathbf P\neq\mathbf{NP}$, then for every $l>k\ge1$
$$
(\mathbf{DTime}[n^k]\cap\mathbf{NTime}[n])/1\subsetneq(\mathbf{DTime}[n^l]\cap\mathbf{NTime}[n])/1.
$$
Bibl. – 16 titles.
Received: 11.05.2007
Citation:
E. A. Hirsch, D. Yu. Grigor'ev, K. V. Pervyshev, “Time hierarchies for cryptographic function inversion with advice”, Studies in constructive mathematics and mathematical logic. Part XI, Zap. Nauchn. Sem. POMI, 358, POMI, St. Petersburg, 2008, 54–76; J. Math. Sci. (N. Y.), 158:5 (2009), 633–644
Linking options:
https://www.mathnet.ru/eng/znsl2145 https://www.mathnet.ru/eng/znsl/v358/p54
|
Statistics & downloads: |
Abstract page: | 264 | Full-text PDF : | 79 | References: | 47 |
|