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- DictionaryCi·pher/ˈsīfər/
noun
- 1. a secret or disguised way of writing; a code: "he was writing cryptic notes in a cipher"
- 2. a zero; a figure 0. dated
verb
- 1. put (a message) into secret writing; encode: "he left two, as yet uncracked, ciphered messages for posthumous decoding"
- 2. do arithmetic. archaic
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. An alternative, less common term is encipherment. To encipher or encode is to convert information into cipher or code.
Learn the various meanings and uses of the word cipher, from zero to code to encryption. See synonyms, examples, etymology, and related phrases of cipher.
Learn how to use the Caesar cipher, a method of encrypting and decrypting messages by shifting letters in the alphabet. This web app lets you encode and decode text, adjust the shift step, and customize the alphabet and case.
Learn the meaning of cipher as a secret language, a zero, or a person of no importance. See how to use cipher in sentences and find synonyms, antonyms, and related words.
Learn about cipher, any method of transforming a message to conceal its meaning, and its history and applications. Explore different types of ciphers, such as transposition, substitution, and product ciphers, and their devices and examples.
- The Editors of Encyclopaedia Britannica
Learn about different types of ciphers, their history, and how they work. Explore examples of classical, mechanical, and modern ciphers with javascript implementations and tips on cryptanalysis.
A cipher is like a mathematical function, you input something and get an output. I input "ABC" into the cipher and it outputs "Hello There!". Code is more direct, you just look up what something means. A cipher is a way of translating the code without having everything listed out.
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