RSA public-key algorithm

modulename: rsa.ko

configname: CONFIG_PUBLIC_KEY_ALGO_RSA

Linux Kernel Configuration
└─>Cryptographic API
└─>Asymmetric (public-key cryptographic) key type
└─>RSA public-key algorithm
In linux kernel since version 3.1 (release Date: 2011-10-24)  
This option enables support for the RSA algorithm (PKCS#1, RFC3447).

source code: