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Solved Challenges

Crypto on the Web Sharks on the Wire 10
Crypto on the Web Secure Protocols 5
General SSH Keys 35
Hash Functions Twin Keys 100
RSA Let's Decrypt Again 175
Mathematics Cofactor Cofantasy 150
RSA RSA Backdoor Viability 175
Hash Functions Jack's Birthday Hash 20
Hash Functions Jack's Birthday Confusion 30
Symmetric Ciphers Logon Zero 80
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
Misc Trust Games 150
Elliptic Curves Edwards Goes Degenerate 100
General Transparency 50
Hash Functions PriMeD5 100
Mathematics Ellipse Curve Cryptography 125
RSA Let's Decrypt 80
Elliptic Curves No Random, No Bias 120
Symmetric Ciphers Paper Plane 120
Symmetric Ciphers Triple DES 60
Symmetric Ciphers Forbidden Fruit 150
Mathematics Unencryptable 125
Lattices Find the Lattice 100
Hash Functions MD0 80
Lattices Too Many Errors 100
Hash Functions Collider 50
RSA Bespoke Padding 100
Mathematics Real Eisenstein 150
Lattices Gaussian Reduction 50
Lattices What's a Lattice? 40
Lattices Gram Schmidt 30
Lattices Size and Basis 15
Lattices Vectors 10
Lattices Backpack Cryptography 120
Misc Nothing Up My Sleeve 150
Elliptic Curves Moving Problems 150
Mathematics Broken RSA 100
Mathematics Modular Square Root 35
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 Keyed Permutations 5
Symmetric Ciphers Resisting Bruteforce 10
Mathematics Prime and Prejudice 200
Elliptic Curves Elliptic Nodes 150
RSA Crossed Wires 100
Misc Toshi's Treasure 150
Diffie-Hellman Static Client 2 120
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
General XOR Properties 15
Elliptic Curves Micro Transmissions 120
RSA Vote for Pedro 150
Misc Armory 100
Misc Bit by Bit 100
Diffie-Hellman Static Client 100
Diffie-Hellman Export-grade 100
Diffie-Hellman Script Kiddie 70
Diffie-Hellman Additive 70
Misc Lo-Hi Card Game 120
Symmetric Ciphers Stream of Consciousness 80
Symmetric Ciphers CTRIME 70
Symmetric Ciphers Bean Counter 60
Elliptic Curves ProSign 3 100
Elliptic Curves Curveball 100
Elliptic Curves Smooth Criminal 60
RSA Blinding Light 120
RSA Infinite Descent 50
RSA Marin's Secrets 50
RSA Fast Primes 75
RSA Ron was Wrong, Whit is Right 90
Mathematics Adrien's Signs 80
Mathematics Successive Powers 60
Diffie-Hellman Parameter Injection 60
Diffie-Hellman Generators of Groups 20
Diffie-Hellman Deriving Symmetric Keys 40
Symmetric Ciphers Symmetry 50
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Misc No Leaks 100
Mathematics Modular Binomials 80
Elliptic Curves Exceptional Curves 100
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
RSA Signing Server 60
Misc Gotta Go Fast 40
Symmetric Ciphers ECB Oracle 60
Diffie-Hellman Computing Shared Secrets 30
Diffie-Hellman Computing Public Values 25
Diffie-Hellman Working with Fields 10
Elliptic Curves Background Reading 5
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
RSA Null or Never 100
RSA Endless Emails 150
RSA Everything is Still Big 100
RSA Everything is Big 70
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 Modular Exponentiation 10
RSA Public Keys 15
RSA Euler's Totient 20
RSA Private Keys 20
RSA RSA Decryption 20
RSA RSA Signatures 25
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 Lemur XOR 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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