pychou

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Solved Challenges

Crypto on the Web No Way JOSE 20
Crypto on the Web Token Appreciation 5
Diffie-Hellman Export-grade 100
Diffie-Hellman Static Client 100
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Additive 70
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Diffie-Hellman Starter 5 40
Diffie-Hellman Diffie-Hellman Starter 4 30
Diffie-Hellman Diffie-Hellman Starter 3 20
Diffie-Hellman Diffie-Hellman Starter 2 20
Diffie-Hellman Diffie-Hellman Starter 1 10
Block Ciphers CTRIME 70
Block Ciphers Paper Plane 120
Block Ciphers Stream of Consciousness 80
Crypto on the Web JWT Sessions 10
Block Ciphers Bean Counter 60
RSA RSA Starter 6 25
RSA RSA Starter 5 20
RSA RSA Starter 4 20
RSA RSA Starter 3 20
RSA RSA Starter 2 15
RSA RSA Starter 1 10
Mathematics Size and Basis 15
Mathematics Vectors 10
General Lemur XOR 40
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
General You either know, XOR you don't 30
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
Block Ciphers Symmetry 50
Block Ciphers Lazy CBC 60
Block Ciphers ECB Oracle 60
Block Ciphers Flipping Cookie 60
Block Ciphers ECB CBC WTF 55
Mathematics Modular Square Root 35
Mathematics Chinese Remainder Theorem 40
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
Block Ciphers Passwords as Keys 50
Block Ciphers Block Cipher Mode Starter 15
Block Ciphers Bringing It All Together 50
Block Ciphers Diffusion through Permutation 30
Block Ciphers Confusion through Substitution 25
Block Ciphers Round Keys 20
Block Ciphers Structure of AES 15
Block Ciphers Resisting Bruteforce 10
Block Ciphers Keyed Permutations 5
General Transparency 50
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General Encoding Challenge 40
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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