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Re: [ELPA] New package: vigenere
From: |
Uwe Brauer |
Subject: |
Re: [ELPA] New package: vigenere |
Date: |
Sat, 02 Sep 2017 08:28:21 +0000 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux) |
>>> "Ian" == Ian Dunn <address@hidden> 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
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