On Digital Cash-like Payment Systems

James A. Donald jamesd at echeque.com
Wed Oct 26 11:53:02 EDT 2005

Date sent:      	Tue, 25 Oct 2005 00:38:36 +0200
To:             	cyphrpunk <cyphrpunk at gmail.com>
Copies to:      	John Kelsey <kelsey.j at ix.netcom.com>, Ian G <iang at systemics.com>,
       	ray at unipay.nl, cryptography at metzdowd.com, cypherpunks at jfet.org
From:           	nagydani at epointsystem.org (Daniel A. Nagy)
Subject:        	Re: [fc-discuss] Financial Cryptography Update: On Digital Cash-like Payment Systems

> One intresting security measure protecting valuable digital assets (WM
> protects private keys this way) is "inflating" them before encryption.
> While it does not protect agains trojan applications, it does a surprisingly
> good job at reducing attacks following the key logging + file theft pattern.
> This security measure depends on two facts: storage being much cheaper than
> bandwidth and transmission of long files being detectable, allowing for
> detecting  and thwarting an attack in progress.

How does one inflate a key?
> -- 
> Daniel

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