Notice: Use of undefined constant class_ico_kat - assumed 'class_ico_kat' in /home/klient.dhosting.pl/mcles/calcoolator_en/config.php on line 504

Notice: Use of undefined constant class_color_txt - assumed 'class_color_txt' in /home/klient.dhosting.pl/mcles/calcoolator_en/config.php on line 505

Notice: Undefined index: HTTP_REFERER in /home/klient.dhosting.pl/mcles/calcoolator_en/index.php on line 8

Notice: Undefined index: dop in /home/klient.dhosting.pl/mcles/calcoolator_en/index.php on line 52

Notice: Undefined variable: addblock in /home/klient.dhosting.pl/mcles/calcoolator_en/index.php on line 151

Notice: Use of undefined constant s - assumed 's' in /home/klient.dhosting.pl/mcles/calcoolator_en/index.php on line 176
Bifid cipher - online encoder / decoder- Online calculators - Calcoolator.eu
       

Choose language

PL, EN, ES, DE, FR, RU


Bifid cipher - online encoder / decoder


Bifid cipher online encoder and decoder. Encrypt and decrypt any cipher created in a Bifid cipher. You can use any shift and additionally a key for more precise text encoding.
A bifid cipher, a bipartite cipher is a combination of a substitution cipher with a transposition cipher. With our encoder you can both encrypt and decrypt every text with the bifid cipher. The cipher uses 25 of the 26 letters of the Latin alphabet, so choose first which letter will be replaced. Then enter the encryption key and select the encode or decode action.





Bifid cipher - encoder / decoder


Replace to

key:

key table
  1 2 3 4 5
1 

Letters Only - removes all non-letters characters.



Have you counted? - like and share









Bifid cipher


The bifid cipher, a bipartite cipher, is a combination of a substitution cipher and a transposition cipher.

It was invented by Felix Delastelle. Delastelle was a French who invented several ciphers, including two, three and four square ciphers. The first presentation of the bifid appeared in the French Revue du Génie civil in 1895 under the name cryptographie nouvelle.

The Bifid cipher is considered more secure as it breaks the message into two separate streams and then reconnects them. It uses a table omitting one letter of the alphabet. Often the letter J is removed and replaced with the letter I.

The basic element of the bifid cipher is the classic Polibius chessboard. However, while encryption with its help consists in simply replacing letters with two-digit numbers - coordinates of the table cells in which these letters are located, bifid adds the next stage to it - switching.

  1 2 3 4 5
1 A B C D E
2 F G H I/J K
3 L M N O P
4 Q R S T U
5 V W X Y Z

For example, we want to encode the word CALCOOLATOR . We look for each letter in the table and assign it a column number and a row number.

letters: C A L C O O L A T O R
    row: 1 1 3 1 3 3 3 1 4 3 4
 column: 3 1 1 3 4 4 1 1 4 4 2

Put the numbers in pairs by reading the row first, then the column. Then, in the table, we search for letters that our pairs of digits will indicate in the order row, column.

  pairs: 11 31 33 31 43 43 11 34 41 14 42
    row: 1  3  3  3  4  4  1  3  4  1  4
 column:  1  1  3  1  3  3  1  4  1  4  2
letters: A  L  N  L  S  S  A  O  Q  D  R

So the scrambled word CALCOOLATOR would beALNLSSAOQDR.


More on: Wikipedia - Bifid cipher


Users of this calculator also used

Burrows-Wheeler transform - encoder / decoder

Burrows-Wheeler transform online encoder and decoder. Encrypt and decrypt any cipher created in a Burrows-Wheeler transform.

Kinetic energy calculator

With this calculator you can quickly calculate the kinetic energy of an object. You will also calculate mass from energy and velocity and speed given kinetic energy and mass.

Trifid cipher - encoder / decoder

Trifid cipher online encoder and decoder. Encrypt and decrypt any cipher created in a Trifid cipher. You can use any shift and additionally a key for more precise text encoding.

Fraction calculator - subtracting fractions step by step with explanation

With the Fractions Calculator, you can subtract any two mixed numbers or proper and improper fractions.
Fractions Calculator will show you the result of operations on fractions step by step and will give you explanations of the operations performed to subtracting fractions. You will learn how to simplify fractions, how to find a common denominator, how to find the least common multiple and the greatest common divisor.

Online tool for drawing graphs of any function.

With this online function graph plotter, you can draw any function. On one graph you can draw any three functions and compare their parameters. You can create graphs for many equations and functions.

Arithmetic mean of the interval distributive series - calculator

Calculator of the arithmetic mean of a series of distributing class intervals.

Force, mass and acceleration calculator

With this calculator you can calculate the force, mass and acceleration from Newton's Second Law of Motion.



Online calculator