warai

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Solved Challenges

RSA RSA Signatures 25
Mathematics Adrien's Signs 80
Symmetric Ciphers Symmetry 50
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
RSA Everything is Big 70
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Square Eyes 35
RSA Inferius Prime 30
Mathematics Successive Powers 60
Diffie-Hellman Export-grade 100
Diffie-Hellman Additive 70
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Parameter Injection 60
Lattices Find the Lattice 100
Elliptic Curves Smooth Criminal 60
General SSH Keys 35
General Encoding Challenge 40
General CERTainly not 30
General Privacy-Enhanced Mail? 25
Hash Functions Collider 50
Misc No Leaks 100
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Crypto on the Web RSA or HMAC? 35
Crypto on the Web JWT Secrets 25
RSA Monoprime 30
RSA Factoring 15
Misc Gotta Go Fast 40
Diffie-Hellman Deriving Symmetric Keys 40
General Extended GCD 20
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
RSA RSA Decryption 20
RSA Private Keys 20
RSA Euler's Totient 20
RSA Public Keys 15
Crypto on the Web No Way JOSE 20
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Diffie-Hellman Generators of Groups 20
Diffie-Hellman Computing Shared Secrets 30
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Working with Fields 10
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
RSA Modular Exponentiation 10
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Lattices Gaussian Reduction 50
Lattices Gram Schmidt 30
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Lattices What's a Lattice? 40
Lattices Size and Basis 15
Lattices Vectors 10
Mathematics Chinese Remainder Theorem 40
Mathematics Quadratic Residues 25
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 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 Transparency 50
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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