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Solved Challenges

Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
ZKPs ZKP Introduction 5
ZKPs Proofs of Knowledge 20
Lattices Gram Schmidt 30
Diffie-Hellman Export-grade 100
Elliptic Curves Smooth Criminal 60
CTF Archive d-phi-enc (HackTM CTF) 0
Lattices Size and Basis 15
Lattices Vectors 10
RSA Square Eyes 35
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers ECB Oracle 60
General Lemur XOR 40
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Mathematics Broken RSA 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
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Mathematics Successive Powers 60
Mathematics Modular Binomials 80
Diffie-Hellman Working with Fields 10
RSA Monoprime 30
RSA Factoring 15
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 Structure of AES 15
Mathematics Adrien's Signs 80
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
General Encoding Challenge 40
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
General Modular Inverting 25
General Modular Arithmetic 2 20
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
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
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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