Category Archives: Classical Cryptography

Command Line Cryptography

In which I use unix commands to create simple cryptographic puzzles

This post is part of a series of 47 posts which begins with The Caesar Shift, the latest post in the series is Letter Groups.

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Happy Birthday, Edgar Allen Poe

In which I celebrate the life of Edgar Allen Poe

This post is part of a series of 47 posts which begins with The Caesar Shift, the latest post in the series is Letter Groups.

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Numbers Stations

The most secure form of cryptography, indeed, the only provably secure form is the One Time Pad. Pedantically the one time pad is not a single algorithm, but in general it is applying pre-agreed randomness to each letter. The fundamental problem with the One Time Pad is the Key Distribution Problem, how do two people on [...]

This post is part of a series of 47 posts which begins with The Caesar Shift, the latest post in the series is Letter Groups.

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Posted in Classical Cryptography | Tagged , , , | 2 Comments

Paper based Enigma Machine

A nice little paper project for people who want a visual representation of Enigma.

This post is part of a series of 47 posts which begins with The Caesar Shift, the latest post in the series is Letter Groups.

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Also posted in Crypto Links | Tagged , , , , | 1 Comment

Poker By Phone

Is it possible to play poker by post or email? Yes, if we assume that there is a trusted ‘know all’ dealer who tells each player their cards. However, is it popssible without such a trusted person. Let’s summarise the problem. First we must shuffle the cards. Then the cards must be dealt, and no player must [...]

This post is part of a series of 47 posts which begins with The Caesar Shift, the latest post in the series is Letter Groups.

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Posted in Classical Cryptography | Tagged , , , , | Leave a comment
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