Kishan

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Solved Challenges

Symmetric Ciphers Bean Counter 60
Lattices Gram Schmidt 30
Symmetric Ciphers Symmetry 50
Mathematics Broken RSA 100
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB CBC WTF 55
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Additive 70
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Deriving Symmetric Keys 40
Diffie-Hellman Computing Shared Secrets 30
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Generators of Groups 20
Diffie-Hellman Working with Fields 10
Hash Functions Jack's Birthday Hash 20
Hash Functions Jack's Birthday Confusion 30
Lattices Gaussian Reduction 50
RSA Inferius Prime 30
General Transparency 50
RSA Salty 20
RSA Manyprime 40
RSA Square Eyes 35
RSA Factoring 15
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
Lattices What's a Lattice? 40
Lattices Size and Basis 15
Lattices Vectors 10
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
General CERTainly not 30
General Lemur XOR 40
Symmetric Ciphers ECB Oracle 60
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
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Mathematics Adrien's Signs 80
Mathematics Successive Powers 60
General You either know, XOR you don't 30
Mathematics Quadratic Residues 25
General XOR Properties 15
General Privacy-Enhanced Mail? 25
Mathematics Chinese Remainder Theorem 40
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
General Favourite byte 20
General XOR Starter 10
General Encoding Challenge 40
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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