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Solved Challenges

Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Structure of AES 15
Hash Functions MD0 80
Diffie-Hellman Working with Fields 10
RSA Euler's Totient 20
RSA Public Keys 15
RSA Modular Exponentiation 10
Misc No Leaks 100
Misc Gotta Go Fast 40
Crypto on the Web Saying Hello 20
Crypto on the Web TLS Handshake 15
Introduction Network Attacks 5
Crypto on the Web Sharks on the Wire 10
Crypto on the Web Secure Protocols 5
Crypto on the Web JSON in JSON 40
Crypto on the Web RSA or HMAC? 35
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
Hash Functions Hash Stuffing 50
Hash Functions Collider 50
General You either know, XOR you don't 30
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Great Snakes 3
Introduction Finding Flags 2
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
General Extended GCD 20
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Greatest Common Divisor 15
General Transparency 50
Symmetric Ciphers Modes of Operation Starter 15
Lattices Size and Basis 15
Lattices Vectors 10
Mathematics Quadratic Residues 25

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