90tan

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Solved Challenges

RSA Factoring 15
Diffie-Hellman Working with Fields 10
RSA Monoprime 30
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
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
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
General Extended GCD 20
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Chinese Remainder Theorem 40
Mathematics Quadratic Residues 25
General Modular Arithmetic 2 20
General Modular Inverting 25
General Modular Arithmetic 1 20
General Greatest Common Divisor 15
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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