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Submitted Solutions

Jack's Birthday Confusion 1
Jack's Birthday Hash 2
Extended GCD 1

Solved Challenges

Diffie-Hellman The Matrix Revolutions 125
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Diffie-Hellman The Matrix Reloaded 100
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Lattices LWE High Bits Message 15
Lattices LWE Intro 10
Lattices LWE Background 5
Mathematics No Way Back Home 100
Mathematics Broken RSA 100
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Misc No Leaks 100
Misc Gotta Go Fast 40
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
RSA Public Keys 15
RSA Modular Exponentiation 10
Lattices Backpack Cryptography 120
Diffie-Hellman The Matrix 75
Mathematics Successive Powers 60
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Static Client 2 120
Diffie-Hellman Additive 70
Diffie-Hellman Static Client 100
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
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
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
General Encoding Challenge 40
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General Lemur XOR 40
Introduction Network Attacks 5
Lattices Gaussian Reduction 50
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Lattices Size and Basis 15
Lattices Vectors 10
Mathematics Modular Square Root 35
Mathematics Chinese Remainder Theorem 40
Mathematics Legendre Symbol 35
Lattices Find the Lattice 100
Mathematics Quadratic Residues 25
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
General Hex 5
General ASCII 5
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
Introduction Great Snakes 3
Introduction Finding Flags 2

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