istvanseres

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Solved Challenges

Isogenies Introduction to Isogenies 10
ZKPs ZKP Introduction 5
Elliptic Curves Montgomery's Ladder 40
Lattices Noise Free 40
Lattices From Private to Public Key LWE 25
Lattices LWE Low Bits Message 20
Lattices LWE High Bits Message 15
Lattices LWE Intro 10
Lattices LWE Background 5
Symmetric Ciphers ECB CBC WTF 55
General You either know, XOR you don't 30
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 Saying Hello 20
Crypto on the Web TLS Handshake 15
Crypto on the Web Sharks on the Wire 10
Crypto on the Web Secure Protocols 5
Lattices Find the Lattice 100
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
General Encoding Challenge 40
RSA Signing Server 60
Mathematics Modular Binomials 80
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Mathematics Broken RSA 100
Lattices Gaussian Reduction 50
Lattices Gram Schmidt 30
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
RSA Marin's Secrets 50
Elliptic Curves Background Reading 5
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
RSA Everything is Big 70
RSA Manyprime 40
RSA Inferius Prime 30
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
Mathematics Modular Square Root 35
Mathematics Adrien's Signs 80
Mathematics Successive Powers 60
Mathematics Chinese Remainder Theorem 40
RSA Infinite Descent 50
RSA Modulus Inutilis 50
RSA Salty 20
RSA Square Eyes 35
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
General SSH Keys 35
General CERTainly not 30
General Privacy-Enhanced Mail? 25
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
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
Lattices What's a Lattice? 40
Lattices Vectors 10
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
Introduction Network Attacks 5
Introduction Great Snakes 3
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
General Modular Arithmetic 2 20
General Modular Inverting 25
Lattices Size and Basis 15
Introduction Finding Flags 2
Elliptic Curves Point Negation 10

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