Tool for encoding and decoding with the Caesar cipher, a simple and famous shift cipher that replaces each letter with another one further down the alphabet. Compatible with ROT13 and other variants.

In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption —a series of well-defined steps that can be followed as a procedure.

Cipher, any method of transforming a message to conceal its meaning. The term is also used synonymously with ciphertext or cryptogram in reference to the encrypted form of the message. All …

Method in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet. The method is named after Julius Caesar, who used it in his private correspondence.

Feb 26, 2025 · Over thousands of years, ciphers have evolved from coded messages into the creative arts and became part of a movement called Cypherpunk, at the heart of cryptocurrency, bitcoin and …

Jul 23, 2025 · Cipher is used in securing financial transactions, protecting information, and maintaining the confidentiality of communication among many others. This article focuses on the concept of …

Nov 30, 2025 · What is a cipher? Learn how ciphers work, their basic components, their historical evolution, and the main classical and modern cipher types, with clear examples and links to …

Here you will find the fruits of several hundred years of development of cryptography, as cryptanalysts discovered new ways to attack a cipher, and the encipherers then complicated the ciphers to …

Aug 13, 2025 · Cipher Definition: A cipher is an encryption algorithm used to convert plaintext into unreadable ciphertext and vice versa, forming the foundation of data security and cryptographic …

Sep 7, 2025 · The meaning of a cipher, explore its role in encrypting data, and understand its applications in cryptography and computer commands on this informative page.