kokoa

11th place

3599 points


Solves

Challenge Category Value Time
wiener attack RSA - Private exponent 223
LSB oracle RSA - Chosen ciphertext 464
low public exponent RSA - Public exponent 244
common modulus RSA - Modulu 244
factor attack 3 RSA - Modulu 464
factor attack 2 RSA - Modulu 265
factor attack RSA - Modulu 200
easy baby RSA RSA - Starter 100
LCG Symmetric cipher - Keystream 100
Caesar Classical cipher 265
bit-flipping Symmetric cipher - Block cipher 152
cut paste Symmetric cipher - Block cipher 285
MT19937 Symmetric cipher - Keystream 493
RC4 Symmetric cipher - Stream cipher 100