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/*
* Copyright (c) 2022-2023, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*
*/
#include <delegated_attestation.h>
#include <psa/client.h>
#include <psa_manifest/sid.h>
psa_status_t
rss_delegated_attest_get_delegated_key(uint8_t ecc_curve,
uint32_t key_bits,
uint8_t *key_buf,
size_t key_buf_size,
size_t *key_size,
uint32_t hash_algo)
{
psa_status_t status;
psa_invec in_vec[] = {
{&ecc_curve, sizeof(ecc_curve)},
{&key_bits, sizeof(key_bits)},
{&hash_algo, sizeof(hash_algo)}
};
psa_outvec out_vec[] = {
{key_buf, key_buf_size}
};
if (key_size == NULL) {
return PSA_ERROR_INVALID_ARGUMENT;
}
status = psa_call(RSS_DELEGATED_SERVICE_HANDLE,
RSS_DELEGATED_ATTEST_GET_DELEGATED_KEY,
in_vec, IOVEC_LEN(in_vec),
out_vec, IOVEC_LEN(out_vec));
if (status == PSA_SUCCESS) {
*key_size = out_vec[0].len;
}
return status;
}
psa_status_t
rss_delegated_attest_get_token(const uint8_t *dak_pub_hash,
size_t dak_pub_hash_size,
uint8_t *token_buf,
size_t token_buf_size,
size_t *token_size)
{
psa_status_t status;
psa_invec in_vec[] = {
{dak_pub_hash, dak_pub_hash_size}
};
psa_outvec out_vec[] = {
{token_buf, token_buf_size}
};
if (token_size == NULL) {
return PSA_ERROR_INVALID_ARGUMENT;
}
status = psa_call(RSS_DELEGATED_SERVICE_HANDLE,
RSS_DELEGATED_ATTEST_GET_PLATFORM_TOKEN,
in_vec, IOVEC_LEN(in_vec),
out_vec, IOVEC_LEN(out_vec));
if (status == PSA_SUCCESS) {
*token_size = out_vec[0].len;
}
return status;
}
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