Stream Cipher HC-128
Goutam Paul, Subhamoy Maitra · 2011
HC-128 [187] can be considered as the next level of evolution in the design of RC4-like software stream ciphers. While the design philosophy of RC4 is simplicity, lots of complicated operations and functions are used in HC-128 to increase the security. After several rounds of evaluations by eminent cryptologists throughout the world for several years, HC-128 made its way into the final eSTREAM [42] Portfolio (revision 1 in September 2008) in the software category. Some cryptanalytic results have been discovered very recently, but they do not pose any immediate threat to the use of the cipher. In this chapter, we give a description of HC-128 along with exposition of the known results.