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Solved Challenges

Hash Functions No Difference 175
Isogenies A True Genus 175
Crypto on the Web No Way JOSE 20
Isogenies Secret Exponents 60
Isogenies Special Isogenies 30
Hash Functions Hash Stuffing 50
Hash Functions Collider 50
ZKPs Let's Prove It 120
ZKPs Couples 100
ZKPs Mister Saplins The Prover 125
ZKPs Let's Prove It Again 175
Hash Functions PriMeD5 100
Diffie-Hellman The Matrix Revolutions 125
Diffie-Hellman The Matrix Reloaded 100
Diffie-Hellman Static Client 2 120
Diffie-Hellman Additive 70
Diffie-Hellman Static Client 100
Diffie-Hellman Export-grade 100
RSA Let's Decrypt Again 175
RSA Vote for Pedro 150
Symmetric Ciphers Forbidden Fruit 150
Symmetric Ciphers Paper Plane 120
Symmetric Ciphers Oh SNAP 120
Symmetric Ciphers Dancing Queen 120
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB CBC WTF 55
Misc Bruce Schneier's Password 100
Mathematics Cofactor Cofantasy 150
ZKPs ZKP Introduction 5
Elliptic Curves Real Curve Crypto 200
Elliptic Curves Double and Broken 50
Elliptic Curves No Random, No Bias 120
Elliptic Curves Edwards Goes Degenerate 100
Elliptic Curves Digestive 60
Elliptic Curves A Twisted Mind 80
Elliptic Curves Elliptic Nodes 150
Elliptic Curves Micro Transmissions 120
Elliptic Curves Exceptional Curves 100
Mathematics Unencryptable 125
Mathematics Ellipse Curve Cryptography 125
Mathematics Broken RSA 100
Mathematics No Way Back Home 100
Mathematics Common Ground 75
Mathematics Successive Powers 60
Isogenies SIDH Key Exchange 80
Isogenies Composite Isogenies 60
Isogenies Three Isogenies 35
Isogenies Two Isogenies 30
Isogenies Breaking SIDH 250
Isogenies Montgomery Curves 30
Isogenies Image Point Arithmetic 30
Isogenies The j-invariant 20
Isogenies Introduction to Isogenies 10
Lattices Find the Lattice 100
Lattices Gaussian Reduction 50
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Lattices Size and Basis 15
Lattices Vectors 10
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Introduction Network Attacks 5
General Lemur XOR 40
General Transparency 50
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General Encoding Challenge 40
Elliptic Curves Moving Problems 150
Elliptic Curves ProSign 3 100
Elliptic Curves Curveball 100
Elliptic Curves Smooth Criminal 60
Elliptic Curves Montgomery's Ladder 40
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 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
RSA Modulus Inutilis 50
RSA Salty 20
RSA Manyprime 40
RSA Monoprime 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
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Symmetry 50
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
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
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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