FCrypt

modulename: fcrypt.ko

configname: CONFIG_CRYPTO_FCRYPT

Linux Kernel Configuration
└─>Cryptographic API
└─>Block ciphers
└─>FCrypt
In linux kernel since version 2.6.21 (release Date: 2007-04-25)  
FCrypt algorithm used by RxRPC

See https://ota.polyonymo.us/fcrypt-paper.txt

source code:
crypto/fcrypt.c

depends
CONFIG_CRYPTO

is depended by
CONFIG_RXKAD