Links

Articles on MysteryTwister

wikipedia.org: Wikipedia on MTC3

Cryptography Websites and Challenges (English)

cryptool-online.org: Website on cryptography (CrypTool)

bund.de: Information on IT security (Federal Office for Information Security)

certicom.com: ECC Challenge (Certicom)

cia.gov: Website on cryptography for children (CIA)

cipherchallenge.org: Website of the National Cipher Challenge (University of Southampton)

cryptoclub.org: Website on cryptography for children (Crypto Club, University of Chicago)

cryptohack.org: Platform for learning modern cryptography (Cryptohack)

cryptopals.com: Matasano Crypto Challenges (Cryptopals)

fbi.gov: Cryptography challenge (FBI)

latticechallenge.org: Lattice challenge for mathematicians (University of Darmstadt)

nsa.gov: Website on cryptography for students (NSA)

simonsingh.net: Website accompanying the book "The Code Book" (Simon Singh)

telenet.be: Enigma Cipher Challenge (Dirk Rijmenants)

Cryptography Websites and Challenges (German)

cryptool-online.org: Website on cryptography (CrypTool)

blinde-kuh.de: Secret languages in a search engine for kids (Blinde Kuh)

bund.de: Informationen über IT-Sicherheit (Bundesamt für Sicherheit in der Informationstechnik)

krypto-im-advent.de: An online Advent calender for children to discover cryptography (KiA)

sat1.de: Tips on internet security (Sat1)

scienceblogs.de: Blog about cryptography (Klaus Schmeh)

sueddeutsche.de: Codebreaker Quiz (Sueddeutsche Zeitung)

Github/Gitlab Repositories

github.com/pFarb: A list of cryptographic papers, articles, tutorials, and how-tos

github.com/sobolevn: A list of cryptographic resources and links

gitlab.com/obxium: A list of cryptographic resources related to arts