115 lines
4.0 KiB
C
115 lines
4.0 KiB
C
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <trusty/keymaster_serializable.h>
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uint8_t *append_to_buf(uint8_t *buf, const void *data, size_t data_len)
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{
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if (data && data_len) {
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trusty_memcpy(buf, data, data_len);
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}
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return buf + data_len;
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}
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uint8_t *append_uint32_to_buf(uint8_t *buf, uint32_t val)
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{
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return append_to_buf(buf, &val, sizeof(val));
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}
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uint8_t *append_sized_buf_to_buf(uint8_t *buf, const uint8_t *data,
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uint32_t data_len)
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{
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buf = append_uint32_to_buf(buf, data_len);
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return append_to_buf(buf, data, data_len);
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}
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int km_boot_params_serialize(const struct km_boot_params *params, uint8_t** out,
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uint32_t *out_size)
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{
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uint8_t *tmp;
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if (!out || !params || !out_size) {
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return TRUSTY_ERR_INVALID_ARGS;
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}
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*out_size = (sizeof(params->os_version) + sizeof(params->os_patchlevel) +
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sizeof(params->device_locked) +
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sizeof(params->verified_boot_state) +
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sizeof(params->verified_boot_key_hash_size) +
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sizeof(params->verified_boot_hash_size) +
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params->verified_boot_key_hash_size +
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params->verified_boot_hash_size);
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*out = trusty_calloc(*out_size, 1);
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if (!*out) {
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return TRUSTY_ERR_NO_MEMORY;
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}
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tmp = append_uint32_to_buf(*out, params->os_version);
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tmp = append_uint32_to_buf(tmp, params->os_patchlevel);
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tmp = append_uint32_to_buf(tmp, params->device_locked);
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tmp = append_uint32_to_buf(tmp, params->verified_boot_state);
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tmp = append_sized_buf_to_buf(tmp, params->verified_boot_key_hash,
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params->verified_boot_key_hash_size);
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tmp = append_sized_buf_to_buf(tmp, params->verified_boot_hash,
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params->verified_boot_hash_size);
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return TRUSTY_ERR_NONE;
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}
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int km_attestation_data_serialize(const struct km_attestation_data *data,
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uint8_t** out, uint32_t *out_size)
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{
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uint8_t *tmp;
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if (!out || !data || !out_size) {
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return TRUSTY_ERR_INVALID_ARGS;
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}
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*out_size = (sizeof(data->algorithm) + sizeof(data->data_size) +
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data->data_size);
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*out = trusty_calloc(*out_size, 1);
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if (!*out) {
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return TRUSTY_ERR_NO_MEMORY;
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}
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tmp = append_uint32_to_buf(*out, data->algorithm);
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tmp = append_sized_buf_to_buf(tmp, data->data, data->data_size);
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return TRUSTY_ERR_NONE;
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}
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int km_raw_buffer_serialize(const struct km_raw_buffer *buf, uint8_t** out,
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uint32_t *out_size)
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{
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if (!out || !buf || !out_size) {
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return TRUSTY_ERR_INVALID_ARGS;
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}
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*out_size = sizeof(buf->data_size) + buf->data_size;
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*out = trusty_calloc(*out_size, 1);
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if (!*out) {
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return TRUSTY_ERR_NO_MEMORY;
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}
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append_sized_buf_to_buf(*out, buf->data, buf->data_size);
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return TRUSTY_ERR_NONE;
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}
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