DES and Triple DES EDE

modulename: des_generic.ko

configname: CONFIG_CRYPTO_DES

Linux Kernel Configuration
└─>Cryptographic API
└─>Block ciphers
└─>DES and Triple DES EDE
In linux kernel since version 2.6.12  
DES (Data Encryption Standard)(FIPS 46-2, ISO/IEC 18033-3) and
Triple DES EDE (Encrypt/Decrypt/Encrypt) (FIPS 46-3, ISO/IEC 18033-3)
cipher algorithms

source code: