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Solved Challenges

Mathematics Real Eisenstein 150
Mathematics Backpack Cryptography 120
Mathematics Unencryptable 125
Elliptic Curves Moving Problems 150
Elliptic Curves Micro Transmissions 120
Elliptic Curves Smooth Criminal 60
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Misc Lo-Hi Card Game 120
Misc Nothing Up My Sleeve 150
RSA Let's Decrypt 80
Symmetric Ciphers Oh SNAP 120
Hash Functions Mixed Up 120
Misc L-Win 120
Hash Functions MD0 80
Hash Functions Collider 50
Mathematics Cofactor Cofantasy 150
Mathematics Ellipse Curve Cryptography 125
General Transparency 50
Symmetric Ciphers Forbidden Fruit 150
Symmetric Ciphers Logon Zero 80
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
Crypto on the Web Token Appreciation 5
Mathematics Gaussian Reduction 50
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
Mathematics Size and Basis 15
Mathematics Vectors 10
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Paper Plane 120
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 Broken RSA 100
Mathematics Modular Square Root 35
Elliptic Curves Elliptic Nodes 150
Misc Toshi's Treasure 150
General XOR Properties 15
RSA Crossed Wires 100
Diffie-Hellman Static Client 2 120
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
RSA Ron was Wrong, Whit is Right 90
Mathematics Modular Binomials 80
Diffie-Hellman Static Client 100
Diffie-Hellman Export-grade 100
RSA Blinding Light 120
RSA Signing Server 60
Diffie-Hellman Script Kiddie 70
RSA Endless Emails 150
RSA Manyprime 40
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers Symmetry 50
Misc Bit by Bit 100
RSA Marin's Secrets 50
RSA Infinite Descent 50
Mathematics Adrien's Signs 80
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 Additive 70
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 Everything is Big 70
RSA Modulus Inutilis 50
RSA Salty 20
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
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
Misc Armory 100
Misc No Leaks 100
Misc Gotta Go Fast 40
General Lemur XOR 40
Mathematics Successive Powers 60
General CERTainly not 30
General Privacy-Enhanced Mail? 25
Mathematics Chinese Remainder Theorem 40
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 Starter 10
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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