kurotail

3rd place

7184 points


Solves

Challenge Category Value Time
no hash elgamal Diffie-Hellman 496
man in the middle Diffie-Hellman 464
wiener attack RSA - Private exponent 223
low public exponent RSA - Public exponent 244
common modulus RSA - Modulu 244
CBC-MAC Symmetric cipher - Block cipher 500
RC4 Symmetric cipher - Stream cipher 100
Vigenere square Classical cipher 496
Affine cipher double Classical cipher 499
padding oracle Symmetric cipher - Block cipher 496
Simple substitution Classical cipher 447
Affine cipher Classical cipher 489
prepend oracle Symmetric cipher - Block cipher 500
LFSR Symmetric cipher - Keystream 500
LEA Hash function 484
bit-flipping Symmetric cipher - Block cipher 152
cut paste Symmetric cipher - Block cipher 285
LCG Symmetric cipher - Keystream 100
Caesar Classical cipher 265
Pwntools Python 200