Related-Key Differential Attacks on the Block-wise Stream Cipher TWOPRIME
Gu-Il Kim, Jaechul Sung, Seokhie Hong, Jongin Lim, Jong Sung Kim · Information Security and Cryptology · 2007
In this paper we present related-key differential attacks on the block-wise stream cipher TWOPRIME. We construct various related-key differentials of TWOPRIME and use them to show that recovering related keys of TWOPRIME can be performed with a data complexity of known plaintext blocks and a time complexity of 8-bit table lookups.