bear

6th place

4766 points


Solves

Challenge Category Value Time
Padding oracle 20240122_SCIST - Crypto 500
LEA Hash function 484
Simple substitution Classical cipher 447
man in the middle Diffie-Hellman 464
factor attack 2 RSA - Modulu 265
low public exponent RSA - Public exponent 244
wiener attack RSA - Private exponent 223
common modulus RSA - Modulu 244
factor attack RSA - Modulu 200
easy baby RSA RSA - Starter 100
bit-flipping Symmetric cipher - Block cipher 152
DES INT Symmetric cipher - Feistel network 493
LCG Symmetric cipher - Keystream 100
cut paste Symmetric cipher - Block cipher 285
RC4 Symmetric cipher - Stream cipher 100
Caesar Classical cipher 265
Pwntools Python 200