Articles about MysteryTwister C3
Cryptography websites and challenges
bokler.com: Edgar Allan Poe Challenge
certicom.com: ECC challenge by Certicom
cia.gov: Some easy cryptography riddles for children.
cipher.maths.soton.ac.uk: Cryptography challenge of the University of Southampton (UK) for students up to 18 years.
cipher.maths.soton.ac.uk: Website on the National Cipher Challenge NCC (University of Southampton, IBM, GCHQ)
codebreakers.eu: Website about the CODEBREAKERS.EU cryptology game (currently 4th edition) (A game for teams with three members, offering 3 levels a 6 tasks (lectures), supported by hints and "cryptologic bombs" to deal with the Enigma)
cryptoclub.math.uic.edu: Website of the Cryptoclub of the University of Illinois at Chicago (UIC) (very colourful, for kids, Macromedia Flash required)
cryptool-online.org: CrypTool-Online optimized for smartphones
cryptopals.com: Matasano Crypto Challenges
fbi.gov: Challenge by the FBI
latticechallenge.org: Lattice Challenge for mathematicians
pegasus.cc.ucf.edu: Cryptography club of the University Of Central Florida
undercover-job.com: In the project UNDERCOVER JOB ten tasks combining music and cryptography/steganography had to be solved. Now, the detailed resolutions are also available there.
users.telenet.be: Enigma Cipher Challenge