OTafe

Two robots

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Rank: #449

Level: md5
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Solved Challenges

Mathematics Chinese Remainder Theorem 40
Mathematics Modular Square Root 35
Mathematics Legendre Symbol 35
Elliptic Curves Efficient Exchange 50
Elliptic Curves Curves and Logs 40
Elliptic Curves Scalar Multiplication 35
Elliptic Curves Point Addition 30
Elliptic Curves Point Negation 10
Elliptic Curves Background Reading 5
Block Ciphers ECB Oracle 60
Block Ciphers Block Cipher Mode Starter 15
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 Structure of AES 15
Block Ciphers Resisting Bruteforce 10
Block Ciphers Keyed Permutations 5
Misc Lo-Hi Card Game 120
Misc No Leaks 100
Misc Gotta Go Fast 40
Mathematics Size and Basis 15
Mathematics Vectors 10
Mathematics Quadratic Residues 25
General Lemur XOR 40
General You either know, XOR you don't 30
General Favourite byte 20
General XOR Properties 15
General Modular Inverting 25
General Modular Arithmetic 2 20
General Modular Arithmetic 1 20
General Extended GCD 20
General Greatest Common Divisor 15
General XOR Starter 10
General Encoding Challenge 40
General Bytes and Big Integers 10
General Base64 10
General Hex 5
General ASCII 5
Introduction Network Attacks 5
Introduction Great Snakes 3
Introduction Finding Flags 2

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