Trapdoor (disambiguation)
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Look up trapdoor in Wiktionary, the free dictionary.
A trapdoor is a door set into a floor or ceiling. The term may also have the following meanings.
- In computing, a trapdoor is a hidden value or set of values that allows access to a program, computer system, or data. It is sometimes erroneously confused with a backdoor.
- A trapdoor function is a mathematical function that is easy to compute in one direction, yet (believed to be) difficult to compute in the opposite direction (finding its inverse) without special information, called the "trapdoor". Trapdoor functions are widely used in cryptography.
- The Trap Door is a British animated series.
- Trapdoor (firearms), a type of breechblock.
- Trapdoor (magazine), a Hugo-nominated science fiction fanzine edited by Robert Lichtman
- Trap Door, an Intergalactic Bump band located in the Lehigh Valley.
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