A known plaintext attack on the ISAAC keystream generator.
Марина Александровна Пудовкина · IACR Cryptology ePrint Archive · 2001
Stream ciphers are often used in applications where high speed and low delay are a requirement. The ISAAC keystream generator is a fast software-oriented encryption algorithm. In this papers the security of the ISAAC keystream generator is investigated. Cryptanalytic algorithm is developed for a known plaintext attack where only a small segment of plaintext is assumed to be known.