keymaster_serializable.h
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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef TRUSTY_KEYMASTER_SERIALIZABLE_H_
#define TRUSTY_KEYMASTER_SERIALIZABLE_H_
#include <trusty/keymaster.h>
/**
* Simple serialization routines for dynamically sized keymaster messages.
*/
/**
* Appends |data_len| bytes at |data| to |buf|. Performs no bounds checking,
* assumes sufficient memory allocated at |buf|. Returns |buf| + |data_len|.
*/
uint8_t *append_to_buf(uint8_t *buf, const void *data, size_t data_len);
/**
* Appends |val| to |buf|. Performs no bounds checking. Returns |buf| +
* sizeof(uint32_t).
*/
uint8_t *append_uint32_to_buf(uint8_t *buf, uint32_t val);
/**
* Appends a sized buffer to |buf|. First appends |data_len| to |buf|, then
* appends |data_len| bytes at |data| to |buf|. Performs no bounds checking.
* Returns |buf| + sizeof(uint32_t) + |data_len|.
*/
uint8_t *append_sized_buf_to_buf(uint8_t *buf, const uint8_t *data,
uint32_t data_len);
/**
* Serializes a km_boot_params structure. On success, allocates |*out_size|
* bytes to |*out| and writes the serialized |params| to |*out|. Caller takes
* ownership of |*out|. Returns one of trusty_err.
*/
int km_boot_params_serialize(const struct km_boot_params *params, uint8_t **out,
uint32_t *out_size);
/**
* Serializes a km_attestation_data structure. On success, allocates |*out_size|
* bytes to |*out| and writes the serialized |data| to |*out|. Caller takes
* ownership of |*out|. Returns one of trusty_err.
*/
int km_attestation_data_serialize(const struct km_attestation_data *data,
uint8_t **out, uint32_t *out_size);
/**
* Serializes a km_attestation_id_data structure. On success, allocates |*out_size|
* bytes to |*out| and writes the serialized |data| to |*out|. Caller takes
* ownership of |*out|. Returns one of trusty_err.
*/
int km_attestation_id_data_serialize(const struct km_attestation_id_data *data,
uint8_t** out, uint32_t *out_size);
/**
* Serializes a km_secure_unlock_data structure. On success, allocates |*out_size|
* bytes to |*out| and writes the serialized |data| to |*out|. Caller takes
* ownership of |*out|. Returns one of trusty_err.
*/
int km_secure_unlock_data_serialize(const struct km_secure_unlock_data *data,
uint8_t **out, uint32_t *out_size);
/**
* Serializes a km_raw_buffer structure. On success, allocates |*out_size|
* bytes to |*out| and writes the serialized |data| to |*out|. Caller takes
* ownership of |*out|. Returns one of trusty_err.
*/
int km_raw_buffer_serialize(const struct km_raw_buffer *buf, uint8_t** out,
uint32_t *out_size);
#endif /* TRUSTY_KEYMASTER_SERIALIZABLE_H_ */