306 static struct key *request_user_key(const char *master_desc, u8 **master_key,  in request_user_key()
310 	struct key *ukey;  in request_user_key()
345 static int calc_hmac(u8 *digest, const u8 *key, unsigned int keylen,  in calc_hmac()  argument
357 	ret = crypto_shash_setkey(hmacalg, key, keylen);  in calc_hmac()
411 static int init_blkcipher_desc(struct blkcipher_desc *desc, const u8 *key,  in init_blkcipher_desc()  argument
425 	ret = crypto_blkcipher_setkey(desc->tfm, key, key_len);  in init_blkcipher_desc()
435 static struct key *request_master_key(struct encrypted_key_payload *epayload,  in request_master_key()
438 	struct key *mkey = ERR_PTR(-EINVAL);  in request_master_key()
605 static struct encrypted_key_payload *encrypted_key_alloc(struct key *key,  in encrypted_key_alloc()  argument
642 	ret = key_payload_reserve(key, payload_datalen + datablob_len  in encrypted_key_alloc()
661 	struct key *mkey;  in encrypted_key_decrypt()
783 static int encrypted_instantiate(struct key *key,  in encrypted_instantiate()  argument
808 	epayload = encrypted_key_alloc(key, format, master_desc,  in encrypted_instantiate()
814 	ret = encrypted_init(epayload, key->description, format, master_desc,  in encrypted_instantiate()
821 	rcu_assign_keypointer(key, epayload);  in encrypted_instantiate()
845 static int encrypted_update(struct key *key, struct key_preparsed_payload *prep)  in encrypted_update()  argument
847 	struct encrypted_key_payload *epayload = key->payload.data;  in encrypted_update()
855 	if (test_bit(KEY_FLAG_NEGATIVE, &key->flags))  in encrypted_update()
874 	new_epayload = encrypted_key_alloc(key, epayload->format,  in encrypted_update()
888 	rcu_assign_keypointer(key, new_epayload);  in encrypted_update()
903 static long encrypted_read(const struct key *key, char __user *buffer,  in encrypted_read()  argument
907 	struct key *mkey;  in encrypted_read()
915 	epayload = rcu_dereference_key(key);  in encrypted_read()
967 static void encrypted_destroy(struct key *key)  in encrypted_destroy()  argument
969 	struct encrypted_key_payload *epayload = key->payload.data;  in encrypted_destroy()
975 	kfree(key->payload.data);  in encrypted_destroy()