Paper 2020/983 Original: eprint.iacr.org/2020/983 ↗
A Differential Meet-in-the-Middle Attack on the Zip cipher
Abstract
We report the successful recovery of the key to a Zip archive containing only two encrypted files. The attack improves on our 2001 ciphertext-only attack, which required five encrypted files. The main innovations are a new differential meet-in-the-middle attack for the initial stages and the use of lattice reduction to recover the internal state of the truncated linear congruential generator.
Metadata
- Available format(s)
PDF- Category
- Secret-key cryptography
- Publication info
- Preprint.
- History
- 2020-08-18: last updated
- 2020-08-18: published
- Short URL
- https://ia.cr/2020/983
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2020/983,
author = {Michael Stay},
title = {A Differential Meet-in-the-Middle Attack on the Zip cipher},
howpublished = {Cryptology {ePrint} Archive, Paper 2020/983},
year = {2020},
url = {https://eprint.iacr.org/2020/983}
}