PKCS#7 testing key type

modulename: pkcs7_test_key.ko

configname: CONFIG_PKCS7_TEST_KEY

Linux Kernel Configuration
└─>Cryptographic API
└─>Asymmetric (public-key cryptographic) key type
└─>PKCS#7 testing key type
In linux kernel since version 3.17 (release Date: 2014-10-05)  
This option provides a type of key that can be loaded up from a
PKCS#7 message - provided the message is signed by a trusted key. If
it is, the PKCS#7 wrapper is discarded and reading the key returns
just the payload. If it isn't, adding the key will fail with an
error.

This is intended for testing the PKCS#7 parser.

source code: