topkapi

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Solved Challenges

Crypto on the Web RSA or HMAC? 35
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB Oracle 60
Elliptic Curves Background Reading 5
Crypto on the Web Decrypting TLS 1.3 35
Crypto on the Web Decrypting TLS 1.2 30
Crypto on the Web Saying Hello 20
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Square Eyes 35
RSA Monoprime 30
RSA Inferius Prime 30
RSA RSA Signatures 25
RSA RSA Decryption 20
RSA Factoring 15
RSA Private Keys 20
RSA Euler's Totient 20
RSA Modular Exponentiation 10
RSA Public Keys 15
Diffie-Hellman Working with Fields 10
Crypto on the Web TLS Handshake 15
Crypto on the Web Sharks on the Wire 10
Crypto on the Web Secure Protocols 5
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
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 Lemur XOR 40
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General You either know, XOR you don't 30
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
General Encoding Challenge 40
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
ZKPs ZKP Introduction 5
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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