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  1. 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.

  2. Decrypt a Message - Cipher Identifier - Online Code Recognizer

    Tool to identify/recognize the type of encryption/encoding applied to a message (more 200 ciphers/codes are detectable). Cipher identifier to quickly decrypt/decode any text.

  3. Caesar cipher: Encode and decode online - cryptii

    Caesar cipher: Encode and decode online 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, …

  4. 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 message. All …

  5. 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 the concept of …

  6. Cipher Identifier (interactive tool) | Boxentriq

    Stuck with a cipher or secret code? This free AI tool will help you identify the type of encryption and guide you how to decode and solve it.

  7. 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 cryptocurrency, bitcoin and …

  8. 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 decrypting data. The …

  9. 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 cryptographic …

  10. Cipher Definition: Encryption, Decryption & Key Spaces

    Jan 10, 2024 · A cipher defines the mechanism through which a message is transformed into a ciphertext using a key such that only the entities sharing this key could use it to decrypt the …