- Félix Delastelle - Wikipedia, the free encyclopedia
- Félix Marie Delastelle (2 January 1840 – 2 April 1902) was a Frenchman most famous for his invention of several systems of polygraphic substitution ciphers ...
- CrypTool-Online / Ciphers / Bifid
- Background. The Bifid cipher was developed in 1901 by the Frenchman Felix Delastelle (*1840; † 1902). He also developed the Four Square cipher.
- Four-Square Cipher - Practical Cryptography
- Felix Delastelle (1840 - 1902) invented the four-square cipher, first published in a book in 1902. Delastelle was most famous for his invention of several systems ...
- Bifid cipher - Geocaching Toolbox
- The bifid cipher is one of the classical ciphers and was invented around 1901 by Felix Delastelle. Bifid is a combination of substitution and fractionation, this ...
Delastelle is described in multiple online sources, as addition to our editors' articles, see section below for printable documents, Delastelle books and related discussion.
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