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A comment on Military Cryptanalytics, Part III. Parent comment

Re:Military Cryptanalytics, Part III by TheAdamAndChe on Friday January 08, 2021 @01:01PM (#25687595)
The nice thing about a OTP is that it's only used once, unlike a typical cipher. If pads are lost, well that's fine because they weren't going to be used with anyone else.
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Re:Military Cryptanalytics, Part III by _wldu on Friday January 08, 2021 @01:13PM (#25687751)
You can also have a separate set of pads that decrypt the messages to something entirely different from the real messages. I'm not aware of another crypto system that allows for this. Here's an example:

    $ padder -d -m c2wrbumxvj8gob34mxn46pxg29a6kxnwfhcaam3en-hr-2v -p ryxrvqnlhz04icqq6eg56cuhg10vlx5dff3ba44wg6ic-kd
PlainText: we-are-moving-north-and-will-attack-at-the-pass

    $ padder -d -m c2wrbumxvj8gob34mxn46pxg29a6kxnwfhcaam3en-hr-2v -p zifs6d9dgk36k94m9d5x77jhj277ip59gw9btmv4j7in-kc
PlainText: our-group-fled-south-to-the-city-we-sailed-east
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Re:Military Cryptanalytics, Part III by lb1lf on Friday January 08, 2021 @01:10PM (#25687706)
True, but with the (used) pads you can reconstruct past messages.

(Provided you intercepted those, that is.)

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Re:Military Cryptanalytics, Part III by jandrese on Friday January 08, 2021 @02:22PM (#25688963)
Sure, but it's also easy to have a system where the pad is destroyed after it is used. This would help insure that nobody messes up and uses the same bits twice as well.
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