Encryptions

The Rail Fence Cipher is a transposition cipher that rearranges the letters of a message to create a new encrypted message. It gets its name from the way the letters are written in a zigzag pattern that resembles a fence made of rails.

Here's how the Rail Fence Cipher works:

Polygraphia is a historical treatise on cryptography and steganography written by Johannes Trithemius, a German abbot and scholar, in the late 15th century. The word polygraphia is derived from Greek, where poly means many and graphia means writing reflecting the treatise's focus on various methods of secret writing and communication.

The Polyalphabetic Cipher is a type of substitution cipher that enhances the security of traditional ciphers by introducing multiple alphabets or cipher alphabets. In this encryption technique, each letter of the plaintext is substituted with a corresponding letter from one of several different cipher alphabets, based on a secret key or keyword.

The Null Cipher, also known as the Null Encryption or Null Message, is a simplistic cryptographic technique where specific letters or symbols are deliberately left blank or null in a message. Instead of using complex algorithms or substitutions, the Null Cipher relies on the absence of characters to convey hidden information.

The Map Cipher, also known as the Route Cipher or Matrix Cipher, is a method of encryption that involves rearranging characters of a message according to a predefined route or pattern on a grid or map. It is a type of transposition cipher, where the original letters of the plaintext are preserved, but their order is changed to create the ciphertext.

The Giovanni Fontana Cipher, attributed to the Italian engineer and writer Giovanni Fontana in the 15th century, is an early example of a cryptographic method known as a homophonic substitution cipher.