Deranged Alphabet Generator

A disordered alphabet is a mixture of the 26 letters of the Latin alphabet in a different order than the standard alphabetical order, thus creating a new arrangement.

Each letter appears exactly once, and the sequence is therefore a permutation of the letters (A,B,C,…,Z)

ZYXWVUTSRQPONMLKJIHGFEDCBA is a disordered alphabet: it contains all 26 letters but in a different order than ABCDEFGHIJKLMNOPQRSTUVWXYZ.

A random alphabet is a disordered alphabet generated by a random process.

Every possible permutation of the 26 letters can be chosen with the same probability.

The resulting alphabet follows no particular pattern and is generally difficult to memorize.

A reversible (or reciprocal) alphabet is a substitution alphabet with the following property: if a letter A is replaced by X, then the letter X is replaced by A. The transformation is therefore its own inverse.

This type of substitution is called involution.

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 keyword allows you to generate a messy alphabet that's easy to remember.

The method usually involves writing the keyword, removing repeated letters, and adding the remaining letters of the alphabet in the usual order.

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

The number of disordered alphabets corresponds to the number of permutations of the 26 letters.

It is calculated using the factorial of 26 (written as 26!), which equals 403291461126605635584000000 (a number with 27 digits).