средство управления ключами в ядре и их хранения (in-kernel key management and retention facility)
Смотри также (See also)
keyctl(1), add_key(2), keyctl(2), request_key(2), keyctl(3),
keyutils(7), persistent-keyring(7), process-keyring(7),
session-keyring(7), thread-keyring(7), user-keyring(7),
user-session-keyring(7), pam_keyinit(8), request-key(8)
The kernel source files Documentation/crypto/asymmetric-keys.txt
and under Documentation/security/keys (or, before Linux 4.13, in
the file Documentation/security/keys.txt).
