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Solved Challenges

Diffie-Hellman Working with Fields 10
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
RSA Fast Primes 75
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Endless Emails 150
RSA Everything is Still Big 100
RSA Crossed Wires 100
RSA Everything is Big 70
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Square Eyes 35
RSA Monoprime 30
RSA Inferius Prime 30
RSA Factoring 15
RSA RSA Signatures 25
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
RSA Public Keys 15
RSA Modular Exponentiation 10
General Encoding Challenge 40
General Transparency 50
General Lemur XOR 40
General CERTainly not 30
General SSH Keys 35
General Privacy-Enhanced Mail? 25
General XOR Properties 15
General XOR Starter 10
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Lattices Find the Lattice 100
Lattices Gaussian Reduction 50
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2
Lattices Size and Basis 15
Lattices Vectors 10
General Favourite byte 20
General You either know, XOR you don't 30
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15

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