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Tag Archives: Monoalphabet
Monoalphabetic Substitution
A monoalphabetic substitution is one where a letter of
plaintext always produces the same letter of ciphertext.
The simplest examples of monoalphabetic substitutions are
probably the
Caesar Cipher and Atbash.
These are special cases, of the more general substitution,
so you may like to read the description of these first.
In general, an example of a monoalphabetic
substitution is shown below.
PLAINTEXT [...]
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.
Atbash
Atbash is a simple substitution very similar in nature to the Caesar Substitution. Whereas the Caesar substitution was Roman in origin, atbash is Jewish in origin.
In atbash, the last letter represents the first, the second to last represents the second and so 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.
Posted in Classical Cryptography Also tagged Atbash, Classical Cryptography, Cryptography 2 Comments
The Caesar Shift
A look at the Caesar Cipher, one of the simplest ciphers.
This post is the first in a series of 47 posts, the latest is Letter Groups
Posted in Classical Cryptography Also tagged Caesar Shift, Classical Cryptography, Cryptography 1 Comment
Happy Birthday, 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.