Breaking the Stream Cipher Whitenoise

Hongjun Wu

Paper 2003/250

Breaking the Stream Cipher Whitenoise

Hongjun Wu

Abstract

Whitenoise is a stream cipher with specification given at http://eprint.iacr.org/2003/249. In this paper, we show that Whitenoise is extremely weak. It can be broken by solving about 80,000 linear equations. And only about 80,000 bytes keystream are needed in the attack.

Note: The details of solving the linear equations are added to this report. The attacks on the reduced versions of Whitenoise are implemented and illustrated in this revised report. The experiment results confirm that it is easy to break the Whitenoise cipher.

Metadata

Available format(s): PDF PS
Category: Secret-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: cryptanalysis stream cipher Whitenoise
Contact author(s): hongjun @ i2r a-star edu sg
History: 2004-02-20: revised; 2003-12-01: received; See all versions
Short URL: https://ia.cr/2003/250
License: CC BY

BibTeX

@misc{cryptoeprint:2003/250,
      author = {Hongjun Wu},
      title = {Breaking the Stream Cipher Whitenoise},
      howpublished = {Cryptology {ePrint} Archive, Paper 2003/250},
      year = {2003},
      url = {https://eprint.iacr.org/2003/250}
}