one-time pad


Definition of one-time pad

: a random-number additive or mixed keying sequence to be used for a single coded message and then destroyed

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First Known Use of one-time pad

1953, in the meaning defined above

History and Etymology for one-time pad

probably from its original form's being a pad of keys whose sheets were torn off and discarded after a single use

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Time Traveler for one-time pad

Time Traveler

The first known use of one-time pad was in 1953

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Cite this Entry

“One-time pad.” Dictionary, Merriam-Webster, Accessed 27 Jan. 2022.

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