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Solved Challenges

Diffie-Hellman Export-grade 100
Elliptic Curves Scalar Multiplication 35
Crypto on the Web No Way JOSE 20
Symmetric Ciphers Bean Counter 60
RSA Crossed Wires 100
Elliptic Curves Point Addition 30
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Symmetric Ciphers Symmetry 50
Diffie-Hellman Parameter Injection 60
RSA Everything is Big 70
Elliptic Curves Point Negation 10
Symmetric Ciphers Flipping Cookie 60
Crypto on the Web JWT Sessions 10
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers ECB CBC WTF 55
Mathematics Modular Binomials 80
General SSH Keys 35
Lattices Size and Basis 15
Diffie-Hellman Deriving Symmetric Keys 40
Elliptic Curves Background Reading 5
Lattices Vectors 10
Crypto on the Web Token Appreciation 5
General Transparency 50
RSA Square Eyes 35
Symmetric Ciphers Passwords as Keys 50
Diffie-Hellman Computing Shared Secrets 30
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Generators of Groups 20
Symmetric Ciphers Bringing It All Together 50
Mathematics Adrien's Signs 80
RSA Modulus Inutilis 50
RSA Manyprime 40
RSA Salty 20
General CERTainly not 30
Symmetric Ciphers Modes of Operation Starter 15
Diffie-Hellman Working with Fields 10
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Symmetric Ciphers Structure of AES 15
Mathematics Legendre Symbol 35
RSA Monoprime 30
RSA Inferius Prime 30
General Privacy-Enhanced Mail? 25
RSA RSA Signatures 25
RSA Factoring 15
General Lemur XOR 40
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
Symmetric Ciphers Resisting Bruteforce 10
RSA Public Keys 15
RSA Modular Exponentiation 10
Symmetric Ciphers Keyed Permutations 5
General Extended GCD 20
General Encoding Challenge 40
Mathematics Quadratic Residues 25
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General You either know, XOR you don't 30
General Greatest Common Divisor 15
General Favourite byte 20
General XOR Properties 15
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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