Re: Encrypting again an already encrypted file increase security ?

From: Lew Pitcher (Lew_Pitcher@td.com)
Date: 02/19/03 

From: Lew_Pitcher@td.com (Lew Pitcher)
Date: Wed, 19 Feb 2003 20:40:01 GMT

On Sun, 16 Feb 2003 21:11:45 GMT, in comp.security.unix, alun@texis.com
(Alun Jones) wrote:

>In article <1ddbe2eb.0302160521.295d0c66@posting.google.com>,
>krus4d3r@hotmail.com (Crusader) wrote:
>>The increase of security is in originally you have a plaintext and
>>after the first encryption you have a "random" file so the next
>>encryption increase segurity because you have encrypted a random file
>>and not a plaintext file.
>
>Unless, of course, there is an interaction between the two algorithms - maybe
>even an interaction specific to your keys in those two algorithms - that
>reduces the security in some way you haven't thought of.

Yah, /I/ was thinking of encrypting some data with my private key, then
encrypting the encrypted data with my public key, but I realized that,
instead of doubly-encrypted data, the end result would be the unencrypted
data <grin>.

[snip]

Lew Pitcher, Information Technology Consultant, Toronto Dominion Bank Financial Group
(Lew_Pitcher@td.com)

(Opinions expressed are my own, not my employer's.)

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