# four-square cipher

> symmetric encryption cipher

**Wikidata**: [Q220871](https://www.wikidata.org/wiki/Q220871)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Four-square_cipher)  
**Source**: https://4ort.xyz/entity/four-square-cipher


## References

1. Freebase Data Dumps. 2013