A Cryptanalytic View of the NSA's Skipjack Block Cipher Design.

Jongsung Kim Raphael C.-W. Phan A Cryptanalytic View of the NSA's Skipjack Block Cipher Design. 368-381 2009 ISA http://dx.doi.org/10.1007/978-3-642-02617-1_38 conf/sersc-isa/2009 db/conf/sersc-isa/isa2009.html#KimP09