nvme_read_key - Man Page

unsigned char * nvme_read_key (long keyring_id , long key_id , int *len );

keyring_id

Id of the keyring holding key_id

key_id

Key id

len

Length of the returned data

Links the keyring specified by keyring_id into the session keyring and reads the payload of the key specified by key_id. len holds the size of the returned buffer. If keyring is 0 the default keyring '.nvme' is used.

Pointer to the payload on success, or NULL with errno set otherwise.