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What (who) is one-time pad - definition

One-time pad

ENCRYPTION TECHNIQUE UTILIZING A ONE-TIME PRE-SHARED KEY AT LEAST AS LONG AS THE ENCRYPTED MESSAGE

OneTimePads; One time pads; One time pad; Vernam cipher; One Time Pad; One time code; One-time tape; Onetime pad; One-time system; One time key; One time padding; One time Pad; One-time pads

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 not smaller than the message being sent. In this technique, a plaintext is paired with a random secret key (also referred to as a one-time pad).

https://en.wikipedia.org/wiki/One-time_pad

One-Time Password

PASSWORD THAT IS VALID FOR ONLY ONE LOGIN SESSION OR TRANSACTION

One time password; O-TP; One-time key; One Time Password; One-time authorization code; One time authorization code; Otp code; OTP code; OTP PIN; One-time PIN; One-time pin; One time pin; One time PIN; Dynamic PIN; Dynamic password; Dynamic pin

<security> (OTP) A security system that requires a new password every time a user authenticates themselves, thus protecting against an intruder replaying an intercepted password. OTP generates passwords using either the MD4 or MD5 hashing algorithms. The equivalent term "S/Key", developed by Bellcore, is a trademark of Telcordia Technologies, so the name OTP is used increasingly. See RFC 1760 - "The S/KEY One-Time Password System" and {RFC 1938} - "A One-Time Password System". One-Time Passwordharry/jotp/">http://cs.umd.edu/One-Time Passwordharry/jotp/. (2000-01-31)

One-time password

PASSWORD THAT IS VALID FOR ONLY ONE LOGIN SESSION OR TRANSACTION

One time password; O-TP; One-time key; One Time Password; One-time authorization code; One time authorization code; Otp code; OTP code; OTP PIN; One-time PIN; One-time pin; One time pin; One time PIN; Dynamic PIN; Dynamic password; Dynamic pin

A one-time password (OTP), also known as a one-time PIN, one-time authorization code (OTAC) or dynamic password, is a password that is valid for only one login session or transaction, on a computer system or other digital device. OTPs avoid several shortcomings that are associated with traditional (static) password-based authentication; a number of implementations also incorporate two-factor authentication by ensuring that the one-time password requires access to something a person has (such as a small keyring fob device with the OTP calculator built into it, or a smartcard or specific cellphone) as well as something a person knows (such as a PIN).

https://en.wikipedia.org/wiki/One-time_password

Examples of use of one-time pad

1. "If you have a one–time pad, the code can‘t be broken, and you can send out dummy broadcasts as much as you want to confuse your enemy." A "one–time pad" is the key to unlocking coded shortwave messages that the CIA calls "one–way voice link." It is low–risk because it‘s known only to the sender and the recipient and used just once before being destroyed, said retired CIA officer Tony Mendez.

2. Because she had destroyed all her secret radio codes against capture, Scotts contribution was to devise and signal to Amethyst a one–time pad encryption system based on her nominal crew list which was fortunately available at both ends.