DES and Triple DES EDE cipher algorithms

modulename: des_generic.ko

and/or

des.ko

configname: CONFIG_CRYPTO_DES

Linux Kernel Configuration
└─>Cryptographic options
└─>DES and Triple DES EDE cipher algorithms
In linux kernel since version 2.6.12  
DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).

source code:
crypto/des.c

depends
CONFIG_CRYPTO

is selected by
CONFIG_RPCSEC_GSS_KRB5