Serpent

modulename: serpent_generic.ko

configname: CONFIG_CRYPTO_SERPENT

Linux Kernel Configuration
└─>Cryptographic API
└─>Block ciphers
└─>Serpent
In linux kernel since version 2.6.12  
Serpent cipher algorithm, by Anderson, Biham & Knudsen

Keys are allowed to be from 0 to 256 bits in length, in steps
of 8 bits.

See https://www.cl.cam.ac.uk/~rja14/serpent.html for further information.

source code: