May 15, 2003

trap door

n.

(alt.: trapdoor)

1. Syn. back door — a Bad Thing.

2. [techspeak] A trap-door function is one which is easy to compute but very difficult to compute the inverse of. Such functions are Good Things with important applications in cryptography, specifically in the construction of public-key cryptosystems.

Posted by Jargon File at May 15, 2003 10:26 AM

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