/*
 *
 * Copyright (C) 2017 GlobalLogic
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef KEYMASTER_COMMON_H
#define KEYMASTER_COMMON_H

#define SIZE_LENGTH sizeof(size_t)
/* AKMS stands for android keymaster serailzing function */
#define SIZE_LENGTH_AKMS sizeof(uint32_t)

#define SIZE_OF_ITEM(item) (item ? sizeof(item[0]) : 0)
#define PARAM_SET_SIZE(parameters) \
            (SIZE_LENGTH + \
            parameters->length * SIZE_OF_ITEM(parameters->params) \
            + get_blob_size_in_params(parameters))
#define BLOB_SIZE(blob) \
            (blob->data_length * SIZE_OF_ITEM(blob->data) + SIZE_LENGTH)
#define BLOB_SIZE_AKMS(blob) \
				(blob->data_length * SIZE_OF_ITEM(blob->data) + SIZE_LENGTH_AKMS)

#define KEY_BLOB_SIZE(key_blob) \
            (key_blob->key_material_size * \
            SIZE_OF_ITEM(key_blob->key_material) + SIZE_LENGTH)
#define KEY_BLOB_SIZE_AKMS(key_blob) \
				(key_blob->key_material_size * \
				SIZE_OF_ITEM(key_blob->key_material) + SIZE_LENGTH_AKMS)

#define TA_KEYMASTER_UUID { 0xdba51a17, 0x0563, 0x11e7, \
		{ 0x93, 0xb1, 0x6f, 0xa7, 0xb0, 0x07, 0x1a, 0x51} }

enum keystore_command {
	KEYMASTER_RESP_BIT = 1,
	KEYMASTER_STOP_BIT = 2,
	KEYMASTER_REQ_SHIFT = 2,

	KM_GENERATE_KEY = (0 << KEYMASTER_REQ_SHIFT),
	KM_BEGIN = (1 << KEYMASTER_REQ_SHIFT),
	KM_UPDATE = (2 << KEYMASTER_REQ_SHIFT),
	KM_FINISH = (3 << KEYMASTER_REQ_SHIFT),
	KM_ABORT = (4 << KEYMASTER_REQ_SHIFT),
	KM_IMPORT_KEY = (5 << KEYMASTER_REQ_SHIFT),
	KM_EXPORT_KEY = (6 << KEYMASTER_REQ_SHIFT),
	KM_GET_VERSION = (7 << KEYMASTER_REQ_SHIFT),
	KM_ADD_RNG_ENTROPY = (8 << KEYMASTER_REQ_SHIFT),
	KM_GET_SUPPORTED_ALGORITHMS = (9 << KEYMASTER_REQ_SHIFT),
	KM_GET_SUPPORTED_BLOCK_MODES = (10 << KEYMASTER_REQ_SHIFT),
	KM_GET_SUPPORTED_PADDING_MODES = (11 << KEYMASTER_REQ_SHIFT),
	KM_GET_SUPPORTED_DIGESTS = (12 << KEYMASTER_REQ_SHIFT),
	KM_GET_SUPPORTED_IMPORT_FORMATS = (13 << KEYMASTER_REQ_SHIFT),
	KM_GET_SUPPORTED_EXPORT_FORMATS = (14 << KEYMASTER_REQ_SHIFT),
	KM_GET_KEY_CHARACTERISTICS = (15 << KEYMASTER_REQ_SHIFT),
	KM_ATTEST_KEY = (16 << KEYMASTER_REQ_SHIFT),
	KM_UPGRADE_KEY = (17 << KEYMASTER_REQ_SHIFT),
	KM_CONFIGURE = (18 << KEYMASTER_REQ_SHIFT),
	KM_GET_HMAC_SHARING_PARAMETERS = (19 << KEYMASTER_REQ_SHIFT),
	KM_COMPUTE_SHARED_HMAC = (20 << KEYMASTER_REQ_SHIFT),
	KM_VERIFY_AUTHORIZATION = (21 << KEYMASTER_REQ_SHIFT),
	KM_DELETE_KEY = (22 << KEYMASTER_REQ_SHIFT),
	KM_DELETE_ALL_KEYS = (23 << KEYMASTER_REQ_SHIFT),
	KM_DESTROY_ATT_IDS = (24 << KEYMASTER_REQ_SHIFT),
	KM_IMPORT_WRAPPED_KEY = (25 << KEYMASTER_REQ_SHIFT),

/*
 * Provisioning API
*/
	KM_SET_ATTESTATION_KEY = (0x2000 << KEYMASTER_REQ_SHIFT),
	KM_APPEND_ATTESTATION_CERT_CHAIN = (0x3000 << KEYMASTER_REQ_SHIFT),

/*
 * Please keep this constant consistent with KM_GET_AUTHTOKEN_KEY define that
 * is defined in Gatekeeper
 */
	KM_GET_AUTHTOKEN_KEY = 0x10000,

};

typedef enum{
	KM_NULL					= 0,
	KM_POPULATED				= 1,
} presence;

#endif /* KEYMASTER_COMMON_H */