From: Uwe Brauer <oub@mat.ucm.es>
To: emacs-devel@gnu.org
Subject: Re: [ELPA] New package: vigenere
Date: Sat, 02 Sep 2017 08:28:21 +0000 [thread overview]
Message-ID: <877exho66y.fsf@mat.ucm.es> (raw)
In-Reply-To: 87o9qz2qc5.fsf@escafil
>>> "Ian" == Ian Dunn <dunni@gnu.org> writes:
RMS> Please add text to the doc string saying,
RMS> This is for historical interest, not a serious system for encryption.
RMS> You might think everyone knows that, but most people are not curious
RMS> about ciphers.
> Done. I often find packages through their functions, so I added a note
> about it to the function doc strings and the package commentary, for
> good measure.
If I am not mistaken a Vigenere cipher is secure, if
- the key is as long as the message
- the key will only be used once
- the key is a random sequence
I am not entirely sure, but maybe this was the first implementation of a
one time pad.
BTW I think historically the autokey cipher, (the secret text is
added to the secret key) was also introduced by Vigenere. Maybe you
could add feature for historical reasons?
Uwe Brauer
prev parent reply other threads:[~2017-09-02 8:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-27 15:43 [ELPA] New package: vigenere Ian Dunn
2017-08-28 1:08 ` Richard Stallman
2017-08-29 0:02 ` Ian Dunn
2017-08-30 2:19 ` Richard Stallman
2017-09-02 8:28 ` Uwe Brauer [this message]
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