CBC (Cipher Block Chaining)

modulename: cbc.ko

configname: CONFIG_CRYPTO_CBC

Linux Kernel Configuration
└─>Cryptographic API
└─>Length-preserving ciphers and modes
└─>CBC (Cipher Block Chaining)
In linux kernel since version 2.6.19 (release Date: 2006-11-29)  
CBC (Cipher Block Chaining) mode (NIST SP800-38A)

This block cipher mode is required for IPSec ESP (XFRM_ESP).

source code: