Article View: sci.crypt
Article #313Encryption with MD5
From: Matt Mahoney
Date: Mon, 02 Nov 1992 20:07
Date: Mon, 02 Nov 1992 20:07
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929 bytes
Supposed I generate a pseudo-random number sequence R using a secure
one-way hash function (such as MD5) by:
r[i+1] = MD5(r[i] XOR password)
and my encryption (and decryption) algorithm is:
ciphertext = plaintext XOR R
Is this secure?
-------------------------------- _\/_
Matt Mahoney, mvm@epg.harris.com |(TV)| Drug of the Nation
#include <disclaimer.h> |____|
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<1992Nov2.200735.15588@mlb.semi.harris.com>Path:
arc1-ca.pugleaf.net!sparky!uunet!snorkelwacker.mit.edu!mojo.eng.umd.edu!darwin.sura.net!mlb.semi.harris.com!caesun6!mvmShow Full Headers
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Newsgroups: sci.crypt Path: arc1-ca.pugleaf.net!sparky!uunet!snorkelwacker.mit.edu!mojo.eng.umd.edu!darwin.sura.net!mlb.semi.harris.com!caesun6!mvm From: mvm@caesun6.epg.harris.com (Matt Mahoney) Subject: Encryption with MD5 Date: Mon, 2 Nov 1992 20:07:35 GMT Nntp-Posting-Host: su3f.ess.harris.com Reply-To: mvm@epg.harris.com (Matt Mahoney) Organization: Engineering Productivity Group, Harris Corp., Melbourne, FL Sender: news@mlb.semi.harris.com Message-ID: <1992Nov2.200735.15588@mlb.semi.harris.com> Lines: 15