ARC4 cipher algorithm

modulename: arc4.ko

configname: CONFIG_CRYPTO_ARC4

Linux Kernel Configuration
└─>Cryptographic API
└─>ARC4 cipher algorithm
In linux kernel since version 2.6.12  
ARC4 cipher algorithm.

ARC4 is a stream cipher using keys ranging from 8 bits to 2048
bits in length. This algorithm is required for driver-based
WEP, but it should not be for other purposes because of the
weakness of the algorithm.

source code: