Steftsis

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Solved Challenges

Mathematics No Way Back Home 100
Elliptic Curves Smooth Criminal 60
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Diffie-Hellman Deriving Symmetric Keys 40
Diffie-Hellman Computing Shared Secrets 30
RSA Modulus Inutilis 50
RSA Manyprime 40
RSA Monoprime 30
RSA Factoring 15
RSA RSA Signatures 25
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Mathematics Modular Binomials 80
Symmetric Ciphers Modes of Operation Starter 15
Crypto on the Web Token Appreciation 5
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
RSA Public Keys 15
RSA Modular Exponentiation 10
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
Mathematics Successive Powers 60
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
General You either know, XOR you don't 30
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
General Bytes and Big Integers 10
General Base64 10
Mathematics Quadratic Residues 25
General Hex 5
General ASCII 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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