Top 10 cipherchallenge.org Wettbewerber

gchq.gov.uk

we are the gchq - the uk's intelligence, security and cyber agency. our mission is to help keep the country safe.

cryptii.com

The Beaufort cipher, created by Sir Francis Beaufort, is a substitution cipher similar to the Vigenère cipher. Unlike the latter, encryption and decryption using the Beaufort cipher uses exactly the same algorithm.

boxentriq.com

Try your skills on these web puzzles.

dcode.fr

Outil de contact et support avec tout ce que qu'il y a à savoir sur dCode et à propos de ses auteurs, son fonctionnement... Informations sans cryptage ;)

ciphertools.co.uk

get ciphers cracked automatically, with the cracked texts presented in the words of their original language (english, french or german). either copy in your own ciphertext or get the website to set you a random ciphertext with varying lelves of difficulty. ciphertools also lets you create your own ciphers, and provides a full set of instructions and tips for cracking ciphers. ciphertools also features a working enigma and bombe machine so that you can decrypt enigma messages.

guballa.de

schach, geocaching und klassische verschlüsselungen...