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Null or Never 0

Solved Challenges

RSA Bespoke Padding 100
Mathematics Find the Lattice 100
Mathematics Gaussian Reduction 50
Mathematics What's a Lattice? 40
Block Ciphers Lazy CBC 60
Block Ciphers Bringing It All Together 50
Block Ciphers Diffusion through Permutation 30
Block Ciphers Confusion through Substitution 25
Block Ciphers Round Keys 20
Block Ciphers ECB Oracle 60
Mathematics Adrien's Signs 80
Misc Bit by Bit 100
Mathematics Broken RSA 100
Mathematics Gram Schmidt 30
Mathematics Legendre Symbol 35
Mathematics Modular Square Root 35
Mathematics Quadratic Residues 25
Block Ciphers Structure of AES 15
Block Ciphers Flipping Cookie 60
RSA Crossed Wires 100
Mathematics Successive Powers 60
Block Ciphers Resisting Bruteforce 10
Block Ciphers Keyed Permutations 5
RSA Null or Never 100
Misc No Leaks 100
Misc Collider 50
General Transparency 50
General XOR Properties 15
Mathematics Real Eisenstein 150
Mathematics Size and Basis 15
Mathematics Vectors 10
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
Elliptic Curves Background Reading 5
RSA Signing Server 60
Block Ciphers ECB CBC WTF 55
Misc Gotta Go Fast 40
Mathematics Chinese Remainder Theorem 40
RSA Ron was Wrong, Whit is Right 90
RSA Endless Emails 150
Diffie-Hellman Diffie-Hellman Starter 1 10
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
RSA Everything is Big 70
RSA Everything is Still Big 100
RSA Modulus Inutilis 50
RSA Fast Primes 75
RSA Marin's Secrets 50
RSA Infinite Descent 50
RSA RSA Starter 6 25
RSA Inferius Prime 30
General You either know, XOR you don't 30
Block Ciphers Passwords as Keys 50
Block Ciphers Block Cipher Mode Starter 15
General CERTainly not 30
General Privacy-Enhanced Mail? 25
General Lemur XOR 40
General Encoding Challenge 40
General Modular Inverting 25
General Favourite byte 20
General XOR Starter 10
General Bytes and Big Integers 10
General Greatest Common Divisor 15
General Extended GCD 20
General Base64 10
General Hex 5
General ASCII 5
RSA Manyprime 40
RSA Salty 20
RSA Square Eyes 35
RSA Monoprime 30
RSA Factoring 15
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2
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

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