Paper 2013/592
Cryptanalysis of the Toorani-Falahati Hill Ciphers
Liam Keliher and Anthony Z. Delaney
Abstract
In 2009 and 2011, Toorani and Falahati introduced two variants of the classical Hill Cipher, together with protocols for the exchange of encrypted messages. The designers claim that the new systems overcome the weaknesses of the original Hill Cipher, and are resistant to any ciphertext-only, known-plaintext, chosen-plaintext, or chosen-ciphertext attack. However, we describe a chosen-plaintext attack that easily breaks both Toorani-Falahati Hill Ciphers, and we present computational results that confirm the effectiveness of our attack.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Published elsewhere. IEEE Symposium on Computers and Communications (ISCC 2013)
- Keywords
- block cipherscryptanalysissecret-key cryptography
- Contact author(s)
- lkeliher @ mta ca
- History
- 2013-09-14: received
- Short URL
- https://ia.cr/2013/592
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2013/592,
author = {Liam Keliher and Anthony Z. Delaney},
title = {Cryptanalysis of the Toorani-Falahati Hill Ciphers},
howpublished = {Cryptology {ePrint} Archive, Paper 2013/592},
year = {2013},
url = {https://eprint.iacr.org/2013/592}
}
