Re: Encode
- To: mathgroup at smc.vnet.net
- Subject: [mg29551] Re: [mg29534] Encode
- From: "Christopher J. Purcell" <purcell at drea.dnd.ca>
- Date: Sun, 24 Jun 2001 02:01:03 -0400 (EDT)
- References: <200106230547.BAA28183@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
A look at the header of files created with Encode shows a very short key length, so short that a brute force attack by Mathematica is easy. I complained about this to WRI and their response was that the best strategy for protecting your work from prying eyes (most useful if your routines are, shall we say, lacking in elegance) is to distribute them as .mx files created with DumpSave, setting attributes ReadProtected and Locked on your functions. I would be curious to hear if anyone has studied the security offered (or not) by this latter approach. If it is just encryption of notebooks prior to mailing them to a trusted friend that you need, PGP is very easy to use. >Can anybody give me an idea of how sophisticated or strong the encryption >behind "Encode" is? > >Thanks, >Thomas Fries -- Dr. Christopher J. Purcell GL/Trans Defence Research Establishment Atlantic 9 Grove St., Dartmouth, NS Canada B2Y 3Z7 Tel: 902-426-3100-x389 Fax: 902-426-9654 E-mail: purcell at drea.dnd.ca
- References:
- Encode
- From: Thomas Fries <tfries@bondspace.com>
- Encode