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  2. Encryption - Wikipedia

    en.wikipedia.org/wiki/Encryption

    In cryptography, encryption (more specifically, encoding) is the process of transforming information in a way that, ideally, only authorized parties can decode.

  3. History of cryptography - Wikipedia

    en.wikipedia.org/wiki/History_of_cryptography

    Encryption in modern times is achieved by using algorithms that have a key to encrypt and decrypt information. These keys convert the messages and data into "digital gibberish" through encryption and then return them to the original form through decryption. In general, the longer the key is, the more difficult it is to crack the code.

  4. Cryptography - Wikipedia

    en.wikipedia.org/wiki/Cryptography

    This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 2025. Practice and study of secure communication techniques "Secret code" redirects here. For the Aya Kamiki album, see Secret Code. "Cryptology" redirects here. For the David S. Ware album, see Cryptology (album). This article needs additional citations for verification. Please help improve ...

  5. Cipher - Wikipedia

    en.wikipedia.org/wiki/Cipher

    Edward Larsson's rune cipher resembling that found on the Kensington Runestone.Also includes runically unrelated blackletter writing style and pigpen cipher.. 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.

  6. End-to-end encryption - Wikipedia

    en.wikipedia.org/wiki/End-to-end_encryption

    The term "end-to-end encryption" originally only meant that the communication is never decrypted during its transport from the sender to the receiver. [9] For example, around 2003, E2EE has been proposed as an additional layer of encryption for GSM [10] or TETRA, [11] in addition to the existing radio encryption protecting the communication between the mobile device and the network infrastructure.

  7. Ciphertext - Wikipedia

    en.wikipedia.org/wiki/Ciphertext

    In cryptography, ciphertext or cyphertext is the result of encryption performed on plaintext using an algorithm, called a cipher. [1] Ciphertext is also known as encrypted or encoded information because it contains a form of the original plaintext that is unreadable by a human or computer without the proper cipher to decrypt it.

  8. Timeline of cryptography - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_cryptography

    1977 – RSA public key encryption invented. 1978 – Robert McEliece invents the McEliece cryptosystem, the first asymmetric encryption algorithm to use randomization in the encryption process. 1981 – Richard Feynman proposed quantum computers. The main application he had in mind was the simulation of quantum systems, but he also mentioned ...

  9. Scytale - Wikipedia

    en.wikipedia.org/wiki/Scytale

    A scytale. In cryptography, a scytale (/ ˈ s k ɪ t əl iː /; also transliterated skytale, Ancient Greek: σκυτάλη skutálē "baton, cylinder", also σκύταλον skútalon) is a tool used to perform a transposition cipher, consisting of a cylinder with a strip of parchment wound around it on which is written a message.