BrianNoBrain

5th place

5988 points


Solves

Challenge Category Value Time
base64 Challenges 499
LEA Hash function 484
padding oracle Symmetric cipher - Block cipher 496
Affine cipher Classical cipher 489
Rail fence Classical cipher 493
Vigenere square Classical cipher 496
Simple substitution Classical cipher 447
Caesar Classical cipher 265
bit-flipping Symmetric cipher - Block cipher 152
cut paste Symmetric cipher - Block cipher 285
DES INT Symmetric cipher - Feistel network 493
XXTEA Symmetric cipher - Feistel network 496
MT19937 Symmetric cipher - Keystream 493
LCG Symmetric cipher - Keystream 100
RC4 Symmetric cipher - Stream cipher 100
Pwntools Python 200