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Groups > comp.os.linux.misc > #80267

Re: one time pads, not Python

From John Levine <johnl@taugh.com>
Newsgroups comp.os.linux.misc, alt.folklore.computers
Subject Re: one time pads, not Python
Date 2026-01-02 04:55 +0000
Organization Taughannock Networks
Message-ID <10j7j49$2cnu$1@gal.iecc.com> (permalink)
References <CtydnVqzjrtfd5P0nZ2dnZfqn_adnZ2d@giganews.com> <10j0c6d$1nm5b$9@dont-email.me> <wwvms2z98ll.fsf@LkoBDZeT.terraraq.uk> <BmGdnaApAKq2ocn0nZ2dnZfqn_sAAAAA@giganews.com>

Cross-posted to 2 groups.

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According to c186282  <c186282@nnada.net>:
>   If you know something ABOUT 'the pad' - like how
>   many letters/numbers and how it's used - that may
>   offer some attack options, at least narrow things
>   down at bit.

No, a real OTP is unbreakable.  The problem is that for every byte
of message you need a byte of key, so distributing the keys and
using them correctly is a logistical nightmare.

Venona decrpted Soviet messages that used OTPs because 
sone of the putative OTPs in fact were used more than once
which was enough to let the US crack them.

-- 
Regards,
John Levine, johnl@taugh.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. https://jl.ly

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                Re: one time pads, not Python John Levine <johnl@taugh.com> - 2026-01-02 04:55 +0000
                Re: one time pads, not Python Richard Kettlewell <invalid@invalid.invalid> - 2026-01-02 09:15 +0000
                Re: one time pads, not Python c186282 <c186282@nnada.net> - 2026-01-02 05:45 -0500
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                Re: one time pads, not Python Richard Kettlewell <invalid@invalid.invalid> - 2026-01-02 21:17 +0000
                Re: one time pads, not Python The Natural Philosopher <tnp@invalid.invalid> - 2026-01-03 08:26 +0000
                Re: one time pads, not Python Richard Kettlewell <invalid@invalid.invalid> - 2026-01-03 11:45 +0000
                Re: one time pads, not Python rbowman <bowman@montana.com> - 2026-01-03 20:56 +0000
                Re: one time pads, not Python c186282 <c186282@nnada.net> - 2026-01-02 05:14 -0500
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