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  2. One-time pad - Wikipedia

    en.wikipedia.org/wiki/One-time_pad

    In cryptography, the one-time pad (OTP) is an encryption technique that cannot be cracked, but requires the use of a single-use pre-shared key that is larger than or equal to the size of the message being sent. In this technique, a plaintext is paired with a random secret key (also referred to as a one-time pad).

  3. Glossary of cryptographic keys - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_cryptographic_keys

    A sample NSA one-time pad. one time pad (OTP or OTPad) - keying material that should be as long as the plaintext and should only be used once. If truly random and not reused it's the most secure encryption method. See one-time pad article.

  4. Message authentication code - Wikipedia

    en.wikipedia.org/wiki/Message_authentication_code

    This can be seen as the one-time pad for authentication. [10] The simplest such pairwise independent hash function is defined by the random key, key = (a, b), and the MAC tag for a message m is computed as tag = (am + b) mod p, where p is prime.

  5. Gilbert Vernam - Wikipedia

    en.wikipedia.org/wiki/Gilbert_Vernam

    Gilbert Sandford Vernam (April 3, 1890 – February 7, 1960) was a Worcester Polytechnic Institute 1914 graduate and AT&T Bell Labs engineer who, in 1917, invented an additive polyalphabetic stream cipher and later co-invented an automated one-time pad cipher.

  6. Confusion and diffusion - Wikipedia

    en.wikipedia.org/wiki/Confusion_and_diffusion

    Although ciphers can be confusion-only (substitution cipher, one-time pad) or diffusion-only (transposition cipher), any "reasonable" block cipher uses both confusion and diffusion. [2] These concepts are also important in the design of cryptographic hash functions , and pseudorandom number generators , where decorrelation of the generated ...

  7. OTP - Wikipedia

    en.wikipedia.org/wiki/OTP

    One-time pad, in cryptography; One-time password or one-time PIN, a password or PIN that is valid for only one login session or transaction; One-time programmable memory, a type of programmable read-only memory (ROM) in electronics; Open Telecom Platform, a collection of middleware, libraries, and tools written in Erlang programming language

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    mail.aol.com

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  9. Time-based one-time password - Wikipedia

    en.wikipedia.org/wiki/Time-based_One-Time_Password

    Time-based one-time password (TOTP) is a computer algorithm that generates a one-time password (OTP) using the current time as a source of uniqueness. As an extension of the HMAC-based one-time password algorithm (HOTP), it has been adopted as Internet Engineering Task Force (IETF) standard RFC 6238 .