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 …

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 …

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 …

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 …

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 …

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

Apr 4, 2025 · Cipher is a frequently used algorithm in cryptology, a subject concerned with the study of cryptographic algorithms. It is a method of encrypting and decrypting data. The …

Sep 7, 2025 · A cipher is an algorithm that encodes or encrypts data. Text that is "ciphered" (processed with a cipher, encrypted) cannot be read unless the original algorithm is known or …

CIPHER definition: 1. a system of writing that prevents most people from understanding the message: 2. a person or…. Learn more.

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