# Félix Delastelle

> Félix-Marie Delastelle was a French cryptographer, best known for inventing the bifid cipher, first presented in the Revue du Génie civil in 1895 under the name of "cryptographie nouvelle". This cipher combines fractionation with transposition, and was an early cipher to implement the principles of confusion and diffusion. David Kahn described it as a "system of considerable importance in cryptology."

*French cryptographer (1840-1902)*

**Canonical URL:** https://fame.am/person/felix-delastelle

## Identity
- **Country:** France
- **Born:** 1840-01-02
- **Died:** 1902-04-02
- **Status:** deceased
- **Gender:** male

## Fame
- **Popularity score:** 38.3 / 100
- **Momentum:** 11.7 / 100  (trend: RISING)
- **Historical depth:** 5.7 / 100
- **Attention shift:** 64.8 / 100
- **Source confidence:** 35.0 / 100
- **Profile completeness:** 35.0 / 100

## Sources
- [Félix Delastelle](https://hu.wikipedia.org/wiki/F%C3%A9lix_Delastelle)
- [Félix Delastelle](https://en.wikipedia.org/wiki/F%C3%A9lix_Delastelle)
- [Félix-Marie Delastelle](https://fr.wikipedia.org/wiki/F%C3%A9lix-Marie_Delastelle)
- [Félix Delastelle](https://tr.wikipedia.org/wiki/F%C3%A9lix_Delastelle)
- [Félix Delastelle](https://it.wikipedia.org/wiki/F%C3%A9lix_Delastelle)
- [Felix Delastelle](https://nl.wikipedia.org/wiki/Felix_Delastelle)
- [Wikidata](https://www.wikidata.org/wiki/Q718164)

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