xseris

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Website: https://github.com/xseris/SFAS

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Solved Challenges

Mathematics Gaussian Reduction 50
Elliptic Curves Smooth Criminal 60
Elliptic Curves Efficient Exchange 50
Symmetric Ciphers ECB Oracle 60
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Bringing It All Together 50
Symmetric Ciphers Diffusion through Permutation 30
Symmetric Ciphers Confusion through Substitution 25
Hash Functions MD0 80
Hash Functions PriMeD5 100
Hash Functions Hash Stuffing 50
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
CTF Archive Key Backup Service 2 (HKCERT CTF) 0
CTF Archive Key Backup Service 1 (HKCERT CTF) 0
CTF Archive Sign In Please, Again (HKCERT CTF) 0
CTF Archive A Joke Cipher (HKCERT CTF) 0
CTF Archive Tenet: The Plagarism (HKCERT CTF) 0
CTF Archive Cipher Mode Picker (HKCERT CTF) 0
CTF Archive Calm Down (HKCERT CTF) 0
CTF Archive Sign in Please (HKCERT CTF) 0
Crypto on the Web JWT Secrets 25
Crypto on the Web No Way JOSE 20
Misc Bruce Schneier's Password 100
General Privacy-Enhanced Mail? 25
Hash Functions Collider 50
Mathematics What's a Lattice? 40
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Symmetric Ciphers Round Keys 20
Symmetric Ciphers Structure of AES 15
Crypto on the Web JWT Sessions 10
Crypto on the Web Token Appreciation 5
Mathematics Gram Schmidt 30
Mathematics Size and Basis 15
Mathematics Vectors 10
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Mathematics Quadratic Residues 25
General XOR Properties 15
General CERTainly not 30
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Negation 10
Elliptic Curves Point Addition 30
Elliptic Curves Background Reading 5
Misc No Leaks 100
Misc Gotta Go Fast 40
Diffie-Hellman Additive 70
Diffie-Hellman Parameter Injection 60
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 1 10
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA Everything is Big 70
RSA Modulus Inutilis 50
RSA Salty 20
Mathematics Chinese Remainder Theorem 40
Symmetric Ciphers Modes of Operation Starter 15
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
General Base64 10
RSA RSA Starter 1 10
General Modular Inverting 25
General Encoding Challenge 40
General Bytes and Big Integers 10
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 Starter 10
General Hex 5
General ASCII 5
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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