art13

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Solved Challenges

General Extended GCD 20
General Greatest Common Divisor 15
Symmetric Ciphers Confusion through Substitution 25
General XOR Properties 15
General Favourite byte 20
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
General Modular Arithmetic 1 20
General Privacy-Enhanced Mail? 25
Crypto on the Web Token Appreciation 5
General Encoding Challenge 40
Introduction Network Attacks 5
General XOR Starter 10
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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