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Solved Challenges

General SSH Keys 35
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Oh SNAP 120
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers CTRIME 70
RSA Fast Primes 75
RSA Endless Emails 150
RSA Everything is Still Big 100
RSA Crossed Wires 100
RSA Everything is Big 70
RSA RSA Backdoor Viability 175
Mathematics Real Eisenstein 150
Mathematics Ellipse Curve Cryptography 125
Mathematics Backpack Cryptography 120
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Symmetry 50
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 Find the Lattice 100
Symmetric Ciphers Passwords as Keys 50
Elliptic Curves Background Reading 5
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
RSA Modulus Inutilis 50
RSA Salty 20
RSA Signing Server 60
RSA Manyprime 40
RSA Inferius Prime 30
RSA Square Eyes 35
RSA Factoring 15
RSA Monoprime 30
RSA RSA Starter 6 25
RSA RSA Starter 5 20
RSA RSA Starter 4 20
RSA RSA Starter 3 20
Diffie-Hellman Script Kiddie 70
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 2 20
Diffie-Hellman Diffie-Hellman Starter 1 10
Mathematics Unencryptable 125
Mathematics Cofactor Cofantasy 150
Hash Functions MD0 80
Mathematics Gaussian Reduction 50
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
Crypto on the Web JSON in JSON 40
Mathematics Size and Basis 15
Mathematics Vectors 10
Misc Lo-Hi Card Game 120
Mathematics Successive Powers 60
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
Mathematics Broken RSA 100
Hash Functions Jack's Birthday Hash 20
Hash Functions Jack's Birthday Confusion 30
Misc Gotta Go Fast 40
Misc No Leaks 100
Mathematics Prime and Prejudice 200
RSA RSA Starter 2 15
RSA RSA Starter 1 10
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General You either know, XOR you don't 30
General Transparency 50
Crypto on the Web RSA or HMAC? 35
Hash Functions Collider 50
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
Crypto on the Web JWT Sessions 10
General Favourite byte 20
Crypto on the Web Token Appreciation 5
General XOR Properties 15
Mathematics Modular Binomials 80
RSA Infinite Descent 50
RSA Marin's Secrets 50
General XOR Starter 10
Mathematics Adrien's Signs 80
General Lemur XOR 40
Mathematics Chinese Remainder Theorem 40
General Encoding Challenge 40
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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