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Solved Challenges

Isogenies Three Isogenies 35
Isogenies Montgomery Curves 30
Isogenies Two Isogenies 30
Isogenies Image Point Arithmetic 30
Isogenies The j-invariant 20
Lattices Gaussian Reduction 50
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Crypto on the Web Secure Protocols 5
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Diffie-Hellman Deriving Symmetric Keys 40
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Computing Shared Secrets 30
General XOR Properties 15
Hash Functions Jack's Birthday Hash 20
Hash Functions Jack's Birthday Confusion 30
Diffie-Hellman Working with Fields 10
General You either know, XOR you don't 30
General Favourite byte 20
General XOR Starter 10
General Base64 10
RSA RSA Decryption 20
RSA Private Keys 20
Mathematics Successive Powers 60
ZKPs ZKP Introduction 5
Lattices Size and Basis 15
Lattices Vectors 10
Diffie-Hellman Generators of Groups 20
RSA Euler's Totient 20
RSA Public Keys 15
RSA Modular Exponentiation 10
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Elliptic Curves Point Negation 10
General ASCII 5
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 Finding Flags 2

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