Related-Key Attacks on the Py-Family of Ciphers and an Approach to Repair the Weaknesses.

Gautham Sekar Souradyuti Paul Bart Preneel Related-Key Attacks on the Py-Family of Ciphers and an Approach to Repair the Weaknesses. 58-72 2007 conf/indocrypt/2007 INDOCRYPT http://dx.doi.org/10.1007/978-3-540-77026-8_6 db/conf/indocrypt/indocrypt2007.html#SekarPP07