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Solved Challenges

Hash Functions PriMeD5 100
Hash Functions Hash Stuffing 50
Hash Functions Collider 50
Hash Functions Jack's Birthday Confusion 30
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers CTRIME 70
Mathematics Cofactor Cofantasy 150
Diffie-Hellman The Matrix Reloaded 100
RSA Vote for Pedro 150
RSA Blinding Light 120
RSA Let's Decrypt 80
Mathematics Real Eisenstein 150
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers ECB CBC WTF 55
RSA Null or Never 100
RSA Bespoke Padding 100
RSA RSA Backdoor Viability 175
RSA Ron was Wrong, Whit is Right 90
RSA Endless Emails 150
Misc Bruce Schneier's Password 100
Mathematics Unencryptable 125
Elliptic Curves Exceptional Curves 100
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Mathematics Roll your Own 125
Mathematics Ellipse Curve Cryptography 125
Diffie-Hellman The Matrix 75
Diffie-Hellman Script Kiddie 70
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Symmetric Ciphers Bringing It All Together 50
Mathematics Backpack Cryptography 120
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Symmetric Ciphers Round Keys 20
Diffie-Hellman Static Client 2 120
Elliptic Curves Curveball 100
Elliptic Curves Moving Problems 150
RSA Signing Server 60
RSA Fast Primes 75
RSA Marin's Secrets 50
Mathematics Successive Powers 60
Mathematics No Way Back Home 100
RSA Infinite Descent 50
RSA Crossed Wires 100
RSA Everything is Still Big 100
RSA Everything is Big 70
Mathematics Prime and Prejudice 200
Hash Functions Jack's Birthday Hash 20
Diffie-Hellman Additive 70
Diffie-Hellman Static Client 100
Diffie-Hellman Export-grade 100
Diffie-Hellman Parameter Injection 60
Elliptic Curves Smooth Criminal 60
Elliptic Curves Montgomery's Ladder 40
General Encoding Challenge 40
Mathematics Broken RSA 100
Mathematics Gram Schmidt 30
Mathematics Find the Lattice 100
Mathematics Gaussian Reduction 50
Mathematics What's a Lattice? 40
Mathematics Size and Basis 15
Mathematics Vectors 10
General Lemur XOR 40
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
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
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
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Square Eyes 35
RSA Monoprime 30
RSA Inferius Prime 30
RSA Factoring 15
RSA RSA Starter 6 25
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
Introduction Network Attacks 5
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
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 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 You either know, XOR you don't 30
General Favourite byte 20
General XOR Properties 15
General XOR Starter 10
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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