International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

P. G. Popescu

Publications

Year
Venue
Title
2017
CHES
Back to Massey: Impressively Fast, Scalable and Tight Security Evaluation Tools
Marios O. Choudary P. G. Popescu
None of the existing rank estimation algorithms can scale to large cryptographic keys, such as 4096-bit (512 bytes) RSA keys. In this paper, we present the first solution to estimate the guessing entropy of arbitrarily large keys, based on mathematical bounds, resulting in the fastest and most scalable security evaluation tool to date. Our bounds can be computed within a fraction of a second, with no memory overhead, and provide a margin of only a few bits for a full 128-bit AES key.

Coauthors

Marios O. Choudary (1)