301 static struct key *request_user_key(const char *master_desc, const u8 **master_key,  in request_user_key()
305 	struct key *ukey;  in request_user_key()
326 static int calc_hmac(u8 *digest, const u8 *key, unsigned int keylen,  in calc_hmac()  argument
339 	err = crypto_shash_setkey(tfm, key, keylen);  in calc_hmac()
377 static struct skcipher_request *init_skcipher_req(const u8 *key,  in init_skcipher_req()  argument
391 	ret = crypto_skcipher_setkey(tfm, key, key_len);  in init_skcipher_req()
410 static struct key *request_master_key(struct encrypted_key_payload *epayload,  in request_master_key()
413 	struct key *mkey = ERR_PTR(-EINVAL);  in request_master_key()
595 static struct encrypted_key_payload *encrypted_key_alloc(struct key *key,  in encrypted_key_alloc()  argument
639 	ret = key_payload_reserve(key, payload_datalen + datablob_len  in encrypted_key_alloc()
658 	struct key *mkey;  in encrypted_key_decrypt()
781 static int encrypted_instantiate(struct key *key,  in encrypted_instantiate()  argument
806 	epayload = encrypted_key_alloc(key, format, master_desc,  in encrypted_instantiate()
812 	ret = encrypted_init(epayload, key->description, format, master_desc,  in encrypted_instantiate()
819 	rcu_assign_keypointer(key, epayload);  in encrypted_instantiate()
842 static int encrypted_update(struct key *key, struct key_preparsed_payload *prep)  in encrypted_update()  argument
844 	struct encrypted_key_payload *epayload = key->payload.data[0];  in encrypted_update()
852 	if (key_is_negative(key))  in encrypted_update()
871 	new_epayload = encrypted_key_alloc(key, epayload->format,  in encrypted_update()
885 	rcu_assign_keypointer(key, new_epayload);  in encrypted_update()
900 static long encrypted_read(const struct key *key, char *buffer,  in encrypted_read()  argument
904 	struct key *mkey;  in encrypted_read()
912 	epayload = dereference_key_locked(key);  in encrypted_read()
962 static void encrypted_destroy(struct key *key)  in encrypted_destroy()  argument
964 	kfree_sensitive(key->payload.data[0]);  in encrypted_destroy()