# trapdoor function

> type of function that is easy to compute in one direction, yet difficult to compute in the opposite direction without special information

**Wikidata**: [Q627620](https://www.wikidata.org/wiki/Q627620)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Trapdoor_function)  
**Source**: https://4ort.xyz/entity/trapdoor-function


## References

1. Freebase Data Dumps. 2013