Romyna

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Solved Challenges

General CERTainly not 30
General Privacy-Enhanced Mail? 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 Lemur XOR 40
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
Mathematics Broken RSA 100
Mathematics Modular Binomials 80
General Base64 10
RSA RSA Decryption 20
RSA Private Keys 20
Mathematics No Way Back Home 100
Mathematics Unencryptable 125
Mathematics Ellipse Curve Cryptography 125
Mathematics Successive Powers 60
CTF Archive Tenet: The Plagarism (HKCERT CTF) 0
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
Misc Armory 100
Misc L-Win 120
ZKPs ZKP Introduction 5
Introduction Network Attacks 5
Isogenies Composite Isogenies 60
Isogenies Three Isogenies 35
Isogenies Two Isogenies 30
Isogenies DLOG on the Surface 40
Isogenies Montgomery Curves 30
Isogenies Image Point Arithmetic 30
Isogenies Where's the Supersingular Curve 25
Isogenies The j-invariant 20
Elliptic Curves Point Negation 10
Isogenies Introduction to Isogenies 10
Lattices Vectors 10
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Hash Functions Jack's Birthday Hash 20
Diffie-Hellman Generators of Groups 20
RSA RSA Signatures 25
Elliptic Curves Background Reading 5
Mathematics Chinese Remainder Theorem 40
Symmetric Ciphers Keyed Permutations 5
General Hex 5
General ASCII 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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