Title

Further improvements to the Bauer-Millward attack on the Hill cipher

Document Type

Article

Publication Title

Cryptologia

Publication Date

9-2-2016

Abstract

The Bauer-Millward attack on the Hill cipher seeks to recover the individual rows of the decryption matrix instead of the entire matrix. The authors present some improvements to the Bauer-Millward attack that reduce the computational workload by a factor of φ(L), where φ is the Euler totient function, and L is the length of the alphabet. They also present a method of efficiently combining the top rows to recover the decryption matrix. Performance statistics are provided for blocks up to size 5, and example analyses are given for blocks up to size 8. Previous authors have stopped at size 4.

Volume

40

Issue

5

First Page

452

Last Page

468

DOI

10.1080/01611194.2015.1087075

ISSN

01611194

E-ISSN

15581586

Share

COinS