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Submitted Solutions

Lo-Hi Card Game 0
Gram Schmidt 0

Solved Challenges

Diffie-Hellman Export-grade 100
Hash Functions No Difference 175
Hash Functions Twin Keys 100
Hash Functions PriMeD5 100
Hash Functions Hash Stuffing 50
Hash Functions Collider 50
Mathematics Broken RSA 100
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Deriving Symmetric Keys 40
Diffie-Hellman Computing Shared Secrets 30
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Generators of Groups 20
Diffie-Hellman Working with Fields 10
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Lattices Gaussian Reduction 50
Misc Lo-Hi Card Game 120
Misc Gotta Go Fast 40
Misc No Leaks 100
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers ECB Oracle 60
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
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 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
RSA Fast Primes 75
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Everything is Still Big 100
RSA Crossed Wires 100
RSA Everything is Big 70
Mathematics Successive Powers 60
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Lattices Size and Basis 15
Lattices Vectors 10
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
General Transparency 50
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 Encoding Challenge 40
General Lemur XOR 40
General You either know, XOR you don't 30
General Favourite byte 20
General XOR Properties 15
RSA Modulus Inutilis 50
RSA Salty 20
General XOR Starter 10
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
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
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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