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 …

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 …

cipher noun [C] (SECRET WRITING) Add to word list a system of writing that most people cannot understand, so that the message is secret; a code:

Nov 5, 2025 · (intransitive, music) Of an organ pipe: to sound independent of the organ.

Definition of cipher noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

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 …

Noun a cipher that can't be decoded She was nothing more than a cipher. Verb were surprised by how much we had spent on the cruise after we had ciphered out the grand total

Use our Caesar cipher encoder to convert messages into cipher text or test every possible key to solve caesar cipher puzzles without knowing the original shift.