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Solved Challenges

Mathematics Find the Lattice 100
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
Misc Gotta Go Fast 40
Symmetric Ciphers Triple DES 60
Mathematics Roll your Own 125
Diffie-Hellman The Matrix Reloaded 100
Diffie-Hellman The Matrix 75
Diffie-Hellman Script Kiddie 70
RSA Everything is Big 70
Diffie-Hellman Diffie-Hellman Starter 2 20
Crypto on the Web RSA or HMAC? Part 2 100
Elliptic Curves Background Reading 5
Mathematics Unencryptable 125
Mathematics Broken RSA 100
Mathematics Successive Powers 60
Mathematics Adrien's Signs 80
Mathematics Modular Binomials 80
Crypto on the Web Decrypting TLS 1.3 35
Crypto on the Web Decrypting TLS 1.2 30
Crypto on the Web Saying Hello 20
Crypto on the Web TLS Handshake 15
Mathematics Gaussian Reduction 50
Mathematics Gram Schmidt 30
Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics What's a Lattice? 40
Mathematics Size and Basis 15
Mathematics Vectors 10
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Lazy CBC 60
Hash Functions Collider 50
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
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 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
RSA Ron was Wrong, Whit is Right 90
RSA Marin's Secrets 50
Crypto on the Web Token Appreciation 5
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Diffie-Hellman Static Client 2 120
Diffie-Hellman Static Client 100
Diffie-Hellman Additive 70
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Diffie-Hellman Starter 5 40
Diffie-Hellman Diffie-Hellman Starter 4 30
Diffie-Hellman Diffie-Hellman Starter 3 20
Diffie-Hellman Diffie-Hellman Starter 1 10
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Modular Inverting 25
General Modular Arithmetic 2 20
Mathematics Quadratic Residues 25
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
RSA Modulus Inutilis 50
RSA Salty 20
General Encoding Challenge 40
RSA RSA Starter 6 25
RSA Manyprime 40
RSA Inferius Prime 30
RSA Signing Server 60
RSA Square Eyes 35
RSA Monoprime 30
RSA Factoring 15
RSA RSA Starter 5 20
RSA RSA Starter 4 20
RSA RSA Starter 3 20
RSA RSA Starter 2 15
RSA RSA Starter 1 10
General You either know, XOR you don't 30
General Lemur XOR 40
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
General Privacy-Enhanced Mail? 25
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
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15

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