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Article #313

Encryption with MD5

#313
From: Matt Mahoney
Date: Mon, 02 Nov 1992 20:07
14 lines
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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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
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Reply-To: mvm@epg.harris.com (Matt Mahoney)
Organization: Engineering Productivity Group, Harris Corp., Melbourne, FL
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