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  1. Cipher | Definition, Types, & Facts | Britannica

    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 …

  2. Cipher - Wikipedia

    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.

  3. Types of Ciphers: A Complete Guide to Early and Modern Codes

    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 …

  4. What is a cipher? Definition, history and types | Let's Cipher

    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 …

  5. CIPHER Definition & Meaning | Dictionary.com

    CIPHER definition: a secret method of writing or recording data, such as by substituting or adding letters or numbers, using specially formed symbols, or the like; code. See examples of cipher …

  6. What Is a Cipher? Definition, Purpose, and Types - NinjaOne

    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 …

  7. Cipher - Glossary | MDN

    Jul 11, 2025 · In cryptography, a cipher is an algorithm that can encrypt plaintext to make it unreadable, and to decrypt the encoded data back to plaintext again.

  8. What is Cipher? - GeeksforGeeks

    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 …

  9. What Is a Cipher? - Computer Hope

    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.

  10. What is a Cipher? Definition, Types, Examples and Methods

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