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Solved Challenges

Mathematics Unencryptable 125
Symmetric Ciphers CTRIME 70
Elliptic Curves Smooth Criminal 60
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Lazy CBC 60
RSA Ron was Wrong, Whit is Right 90
RSA RSA Backdoor Viability 175
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
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
Mathematics Successive Powers 60
Lattices Find the Lattice 100
Lattices Gaussian Reduction 50
Lattices What's a Lattice? 40
Hash Functions Jack's Birthday Hash 20
Hash Functions Jack's Birthday Confusion 30
Lattices Gram Schmidt 30
Lattices Size and Basis 15
General Transparency 50
Crypto on the Web Token Appreciation 5
Diffie-Hellman Export-grade 100
General SSH Keys 35
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 Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
RSA Fast Primes 75
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Endless Emails 150
RSA Everything is Still Big 100
RSA Crossed Wires 100
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Square Eyes 35
RSA Monoprime 30
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
Lattices Vectors 10
Mathematics Broken RSA 100
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 Modular Binomials 80
Mathematics Adrien's Signs 80
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General Base64 10
Elliptic Curves Background Reading 5
General Modular Arithmetic 1 20
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
General Extended GCD 20
General Modular Inverting 25
General Modular Arithmetic 2 20
General Greatest Common Divisor 15
General Lemur XOR 40
General You either know, XOR you don't 30
General Favourite byte 20
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
General XOR Properties 15
General XOR Starter 10
General Encoding Challenge 40
General Bytes and Big Integers 10
General Hex 5
RSA Everything is Big 70
General ASCII 5
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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