Deranged Alphabet Generator

A deranged alphabet (disordered) is a mixture of the 26 letters in an order different from the traditional alphabetical order (A,B,C,…) creating a new arrangement.

Definition: A random alphabet has 26 letters in a totally randomized manner without following a particular order (shuffle often difficult to memorize).

A reciprocal (or reversible) alphabet is a cipher alphabet where each letter is paired with another unique letter, creating a two-way correspondence. So if a plain letter A is crypted by X, then the plain letter X is crypted A.

During a mono-alphabetic substitution, a disturbed alphabet makes it possible to carry out a ciphering by substitution.

The reverse alphabet is the disturbed alphabet that it allows to find the original message.

To generate the reverse alphabet:

— for each letter i of the normal alphabet, note its position j in the disturbed alphabet, and write in the reverse alphabet the letter in position j in the normal alphabet.

An alphanumeric alphabet has 36 characters: 26 letters and 10 digits.

Using a key helps to scramble the letters in the alphabet with a single keyword to remember

QWERTYUIOPASDFGHJKLZXCVBNM : QWERTY keyboard

MNBVCXZLKJHGFDSAPOIUYTREWQ : reverse QWERTY keyboard

AZERTYUIOPQSDFGHJKLMWXCVBN : AZERTY keyboard

NBVCXWMLKJHGFDSQPOIUYTREZA : reverse AZERTY keyboard

ZYXWVUTSRQPONMLKJIHGFEDCBA : reverse alphabet

AEIOUYBCDFGHJKLMNPQRSTVWXZ : vowels then consonants

Choose a method for encryption that accepts a deranged alphabet. dCode has many choices for that, select the right of yours, by default, use mono-alphabetic substitution.

A random disordered alphabet can be created by reversing the positions of the letters (Fisher-Yates shuffle):function randomAlphabet() {
alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
derangedAlphabet = alphabet
for (i = 25 ; i > 0 ; i--) {
index = rand(0, i)
swap( derangedAlphabet[i], derangedAlphabet[randomIndex] )
}
return derangedAlphabet
}

The rand(a,b) function picks a random number between a and b

The swap(a,b) function swaps the values of a and b