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Solved Challenges

Crypto on the Web JWT Sessions 10
RSA Everything is Big 70
Symmetric Ciphers The Good, The Pad, The Ugly 100
Hash Functions Mixed Up 120
Lattices Bounded Noise 50
Lattices Noise Free 40
Lattices From Private to Public Key LWE 25
Lattices LWE Low Bits Message 20
Lattices LWE High Bits Message 15
Lattices LWE Intro 10
Lattices LWE Background 5
Lattices Backpack Cryptography 120
Hash Functions MD0 80
Crypto on the Web Token Appreciation 5
Hash Functions Collider 50
Symmetric Ciphers Pad Thai 80
Symmetric Ciphers Lazy CBC 60
Mathematics No Way Back Home 100
Mathematics Broken RSA 100
Mathematics Successive Powers 60
ZKPs Hamiltonicity 1 100
CTF Archive Hamiltonicity (CryptoHack) 0
ZKPs OR Proof 75
CTF Archive OR Proof (CryptoHack) 0
ZKPs Too Honest 50
ZKPs Non-Interactive 35
ZKPs Honest Verifier Zero Knowledge 30
ZKPs Special Soundness 25
ZKPs Proofs of Knowledge 20
ZKPs ZKP Introduction 5
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
RSA Square Eyes 35
RSA Inferius Prime 30
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Flipping Cookie 60
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
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Passwords as Keys 50
Lattices Find the Lattice 100
Lattices Gaussian Reduction 50
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Lattices Size and Basis 15
Lattices Vectors 10
Symmetric Ciphers Bringing It All Together 50
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
RSA Monoprime 30
RSA Factoring 15
RSA RSA Signatures 25
RSA RSA Decryption 20
RSA Euler's Totient 20
RSA Public Keys 15
RSA Modular Exponentiation 10
Symmetric Ciphers Modes of Operation Starter 15
General Encoding Challenge 40
General Lemur XOR 40
Introduction Network Attacks 5
RSA Private Keys 20
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
Mathematics Chinese Remainder Theorem 40
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
General Modular Inverting 25
General Modular Arithmetic 2 20
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 XOR Starter 10
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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