dereference_key_locked
ekp = dereference_key_locked(key);
tkp = dereference_key_locked(key);
epayload = dereference_key_locked(key);
struct encrypted_key_payload *epayload = dereference_key_locked(key);
epayload = dereference_key_locked(key);
return (struct user_key_payload *)dereference_key_locked((struct key *)key);
epayload = dereference_key_locked(key);
struct request_key_auth *rka = dereference_key_locked(key);
struct request_key_auth *rka = dereference_key_locked(key);
p = dereference_key_locked(key);
zap = dereference_key_locked(key);