affine

The affine cipher is a monoalphabetic substitutoin cipher,
where each letter is enciphered with the function (ax+b) mod 26 
(26 is the number of letters in the alphabet)

Classical cryptography methods for words and brief phrases.
Substitution, transposition and concealment (null) ciphers are available, like
Caesar, Vigenère, Atbash, affine, simple substitution, Playfair,
rail fence, Scytale, single column, bifid, trifid, and Polybius ciphers.

Luigi Annicchiarico

ciphertext

Classical Cryptography Methods for Words and Phrases

affine function

<dl><dt>word</dt>
<dd>Word or phrase to be encrypted</dd>
<dt>a</dt>
<dd>First parameter. This value and 26 must be coprime</dd>
<dt>b</dt>
<dd>Second parameter. Magnitude of the shift</dd>
<dt>encrypt</dt>
<dd>If `TRUE` (default), the program ciphers the input word, If `FALSE`, the program decrypts it.</dd></dl>

Arguments

affine — affine

<dl>

<dt>word</dt>
<dd>Word or phrase to be encrypted</dd>


<dt>a</dt>
<dd>First parameter. This value and 26 must be coprime</dd>


<dt>b</dt>
<dd>Second parameter. Magnitude of the shift</dd>


<dt>encrypt</dt>
<dd>If `TRUE` (default), the program ciphers the input word, If `FALSE`, the program decrypts it.</dd>

</dl>

affine: affine

Description

Usage

Value

Arguments

References

Examples