Category / Keywords: secret-key cryptography / block ciphers, DES, AES, hash functions, SHA-1, Haval, RIPEMD, MD4, MD5, boolean functions Publication Info: draft, will probably never be published Date: received 1 Oct 2002, last revised 2 Oct 2002 Contact author: courtois at minrank org Available format(s): Postscript (PS) | Compressed Postscript (PS.GZ) | PDF | BibTeX Citation Note: Few hours after the submission of this paper, Filiol updated his paper. His new, updated results show that, there is indeed no bias in the terms of degree <=2 in DES or AES. Thus Filiol confirmed our results. However he still does claim some other biases in DES and AES for different, more complex tests. Who knows... Version: 20021002:142142 (All versions of this report) Short URL: ia.cr/2002/149