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Submitted Solutions

Modular Binomials 1

Solved Challenges

Symmetric Ciphers CTRIME 70
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Bringing It All Together 50
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 Resisting Bruteforce 10
General SSH Keys 35
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
Mathematics Gaussian Reduction 50
Symmetric Ciphers Keyed Permutations 5
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
Mathematics Prime and Prejudice 200
Hash Functions Mixed Up 120
Misc No Leaks 100
Misc Gotta Go Fast 40
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
General Transparency 50
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 You either know, XOR you don't 30
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
General Encoding Challenge 40
Introduction Network Attacks 5
Introduction Great Snakes 3
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Finding Flags 2
Mathematics Size and Basis 15
Mathematics Vectors 10
Mathematics Successive Powers 60

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