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Solved Challenges

Block Ciphers Diffusion through Permutation 30
Block Ciphers Confusion through Substitution 25
Block Ciphers Round Keys 20
Block Ciphers Structure of AES 15
Mathematics Successive Powers 60
Mathematics Chinese Remainder Theorem 40
Mathematics Legendre Symbol 35
Mathematics Modular Square Root 35
Mathematics Gaussian Reduction 50
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
Mathematics Size and Basis 15
Mathematics Vectors 10
Elliptic Curves Background Reading 5
RSA Manyprime 40
RSA Square Eyes 35
RSA Monoprime 30
RSA Inferius Prime 30
General Encoding Challenge 40
Diffie-Hellman Diffie-Hellman Starter 1 10
Block Ciphers Resisting Bruteforce 10
RSA Factoring 15
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
General Modular Inverting 25
Mathematics Quadratic Residues 25
General Modular Arithmetic 2 20
Introduction Network Attacks 5
General CERTainly not 30
General Privacy-Enhanced Mail? 25
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 Bytes and Big Integers 10
General XOR Starter 10
General Base64 10
General Hex 5
General ASCII 5
Block Ciphers Keyed Permutations 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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