Local pseudorandom generators are a class of fundamental cryptographic primitives having very broad applications in theoretical cryptography. Following Couteau et al.’s work at ASIACRYPT 2018, this paper further studies the concrete security one important local generators, i.e., Goldreich’s generators. Our first attack is guess-and-determine type. result significantly impro...

a new approach utilizing newton method and homotopy analysis method (ham) is proposed for solving nonlinear system of equations. accelerating the rate of convergence of ham, and obtaining a global quadratic rate of convergence are the main purposes of this approach. the numerical results demonstrate the efficiency and the performance of proposed approach. the comparison with conventional homoto...

We demonstrate our prototype of the DBO database system. DBO is designed to facilitate scalable analytic processing over large data archives. DBO’s analytic processing performance is competitive with other database systems; however, unlike any other existing research or industrial system, DBO maintains a statistically meaningful guess to the final answer to a query from start to finish during q...

In this paper, we investigate the security of SNOW-V, demonstrating two guess-and-determine (GnD) attacks against full version with complexities 2384 and 2378, respectively, one distinguishing attack a reduced variant complexity 2303. Our GnD use enumeration recursion to explore valid guessing paths, try truncate as many invalid paths possible at early stages by carefully designing order guessi...