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Solved Challenges

Lattices Gaussian Reduction 50
Mathematics Modular Binomials 80
Misc Bruce Schneier's Password 100
Mathematics Adrien's Signs 80
Mathematics Successive Powers 60
Misc Gotta Go Fast 40
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Flipping Cookie 60
Hash Functions Collider 50
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers ECB CBC WTF 55
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
General Transparency 50
General You either know, XOR you don't 30
RSA Signing Server 60
RSA Ron was Wrong, Whit is Right 90
RSA Fast Primes 75
RSA Infinite Descent 50
RSA Marin's Secrets 50
RSA Endless Emails 150
RSA Everything is Still Big 100
Lattices LWE Intro 10
Lattices LWE Background 5
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Lattices Size and Basis 15
Lattices Vectors 10
Hash Functions Jack's Birthday Hash 20
Diffie-Hellman Working with Fields 10
RSA Crossed Wires 100
RSA Everything is Big 70
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Square Eyes 35
RSA Monoprime 30
RSA Inferius Prime 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
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 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 Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Confusion through Substitution 25
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
Mathematics Chinese Remainder Theorem 40
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 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 XOR Properties 15
General Favourite byte 20
General XOR Starter 10
General Encoding Challenge 40
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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