# Data Encryption Standard

> Early unclassified symmetric-key block cipher

**Wikidata**: [Q135035](https://www.wikidata.org/wiki/Q135035)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Data_Encryption_Standard)  
**Source**: https://4ort.xyz/entity/data-encryption-standard


## References

1. Freebase Data Dumps. 2013
2. Quora
3. Wikibase TDKIV