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Solved Challenges

RSA Null or Never 100
RSA Bespoke Padding 100
Symmetric Ciphers Logon Zero 80
Symmetric Ciphers Bean Counter 60
Symmetric Ciphers ECB CBC WTF 55
Symmetric Ciphers Stream of Consciousness 80
Diffie-Hellman The Matrix Reloaded 100
Diffie-Hellman The Matrix 75
Symmetric Ciphers Lazy CBC 60
Symmetric Ciphers Flipping Cookie 60
Symmetric Ciphers ECB Oracle 60
RSA Everything is Still Big 100
RSA Crossed Wires 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 RSA Starter 6 25
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
CTF Archive Authenticator (Firebird Internal CTF) 0
Misc Gotta Go Fast 40
Hash Functions Mixed Up 120
Hash Functions No Difference 175
Hash Functions Hash Stuffing 50
Hash Functions Jack's Birthday Confusion 30
Hash Functions Jack's Birthday Hash 20
Elliptic Curves Point Negation 10
Symmetric Ciphers Passwords as Keys 50
Symmetric Ciphers Modes of Operation Starter 15
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
Elliptic Curves Background Reading 5
Diffie-Hellman Export-grade 100
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
Diffie-Hellman Diffie-Hellman Starter 1 10
Symmetric Ciphers Resisting Bruteforce 10
Symmetric Ciphers Keyed Permutations 5
Mathematics Roll your Own 125
General Encoding Challenge 40
General Hex 5
General ASCII 5
General Base64 10
General You either know, XOR you don't 30
General XOR Properties 15
General XOR Starter 10
General Modular Arithmetic 2 20
Mathematics Cofactor Cofantasy 150
Mathematics Unencryptable 125
Mathematics No Way Back Home 100
Mathematics Broken RSA 100
Mathematics Modular Binomials 80
Mathematics Adrien's Signs 80
Mathematics Successive Powers 60
Introduction Network Attacks 5
Mathematics Find the Lattice 100
General Extended GCD 20
Mathematics Gaussian Reduction 50
Mathematics What's a Lattice? 40
Mathematics Gram Schmidt 30
Mathematics Size and Basis 15
Mathematics Modular Square Root 35
Mathematics Vectors 10
Mathematics Chinese Remainder Theorem 40
Mathematics Legendre Symbol 35
Mathematics Quadratic Residues 25
General Modular Arithmetic 1 20
General Greatest Common Divisor 15
General Modular Inverting 25
General Favourite byte 20
General Bytes and Big Integers 10
Introduction Great Snakes 3
Introduction Finding Flags 2

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