PC-RC4 Algorithm: An Enhancement Over Standard RC4 Algorithm
نویسنده
چکیده
RC4 is most widely used stream cipher. In many standard security protocols is used the RC4 like in Wi-Fi Protocol Access (WPA) and Wired Equivalence Privacy (WEP). Here we propose a new enhanced RC4 algorithm named as PC-RC4. It is an extension of standard RC4 Algorithm. The basic purpose of this enhancement is to making strong RC4 algorithm. RC4 stream cipher is basically two stages process named: KSA & PRGA. The weakness and attacks are found in both the stages of RC4. In this context, this paper is trying to making strong to both the stages of RC4 Stream Cipher. The backbone of the RC4 algorithm is shuffling operation in both the stages KSA & PRGA. In the PC-RC4 Stream cipher is improved randomness in KSA as well as in PRGA to make it strong. In this paper we studied and analyzed some potential vulnerabilities of RC4 algorithm and proposed some appropriate changes on standard RC4 algorithm to overcome. A pragmatic approach used to analyze PC-RC4 in different scenarios.
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Statistical weaknesses in 20 RC4-like algorithms and (probably) the simplest algorithm free from these weaknesses - VMPC-R
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