JargonFile/entries/trap door.txt
2014-07-26 08:53:53 +01:00

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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.