MysteryTwister C3
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Cryptography websites and challenges

bokler.com: Edgar Allan Poe Challenge

bsi-fuer-buerger.de: An animation movie about bot networks by the Dutch Government Computer Emergency Response Team

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

nsa.gov: Cryptography website for kids by the NSA

pegasus.cc.ucf.edu: Cryptography club of the University Of Central Florida

simonsingh.net: Webpage to the book "The Code Book" by Simon Singh from the year 2000 and the corresponding Cipher Challenge

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

 
 
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   +++    [11:06 - 30.03.2017] seltuna solved the Level I challenge 'Number Sequence — Part 2'    +++    [10:48 - 30.03.2017] seltuna solved the Level I challenge 'Original Caesar Cipher'    +++    [23:45 - 29.03.2017] c2 solved the Level I challenge 'Classical Ciphers^3'    +++    [23:05 - 29.03.2017] c2 solved the Level II challenge 'Lunchtime Attack on the Fully Homomorphic Encryption Scheme'    +++    [18:20 - 29.03.2017] indojab solved the Level I challenge 'Original Caesar Cipher'    +++