jonnytang

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Solved Challenges

ZKPs ZKP Introduction 5
Lattices Vectors 10
Isogenies Introduction to Isogenies 10
Mathematics Successive Powers 60
Symmetric Ciphers Lazy CBC 60
RSA Modulus Inutilis 50
Symmetric Ciphers Flipping Cookie 60
Mathematics Modular Square Root 35
General You either know, XOR you don't 30
General Favourite byte 20
Diffie-Hellman Export-grade 100
Crypto on the Web TLS Handshake 15
Crypto on the Web Sharks on the Wire 10
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
Crypto on the Web JWT Sessions 10
RSA Inferius Prime 30
Crypto on the Web Secure Protocols 5
Crypto on the Web Token Appreciation 5
Symmetric Ciphers Symmetry 50
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers ECB CBC WTF 55
RSA Salty 20
Diffie-Hellman Parameter Injection 60
General Privacy-Enhanced Mail? 25
Diffie-Hellman Additive 70
Mathematics Legendre Symbol 35
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 Square Eyes 35
RSA Manyprime 40
RSA Monoprime 30
RSA RSA Signatures 25
RSA Factoring 15
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
RSA Public Keys 15
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
General Encoding Challenge 40
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Bringing It All Together 50
Diffie-Hellman Working with Fields 10
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 Keyed Permutations 5
Symmetric Ciphers Resisting Bruteforce 10
Mathematics Chinese Remainder Theorem 40
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
Introduction Network Attacks 5
RSA Modular Exponentiation 10
General XOR Properties 15
Elliptic Curves Background Reading 5
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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