mirror of
https://github.com/openharmony/tee_tee_tzdriver.git
synced 2026-07-01 06:41:57 -04:00
袁浩
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*
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* client_hash_auth.c
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*
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* function for CA code hash auth
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*
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* Copyright (C) 2022 Huawei Technologies Co., Ltd.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "client_hash_auth.h"
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#include <securec.h>
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#include "tc_ns_log.h"
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#include "auth_base_impl.h"
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#include "los_adapt.h"
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static int proc_calc_hash(uint8_t kernel_api, struct tc_ns_session *session,
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LosTaskCB *cur_struct)
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{
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int rc, i;
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int so_found = 0;
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if (kernel_api == TEE_REQ_FROM_USER_MODE) {
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for (i = 0; so_found < NUM_OF_SO && i < KIND_OF_SO; i++) {
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rc = calc_task_so_hash(session->auth_hash_buf + MAX_SHA_256_SZ * so_found,
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(uint32_t)SHA256_DIGEST_LENGTH, cur_struct, i);
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if (!rc)
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so_found++;
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}
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if (so_found != NUM_OF_SO)
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tlogd("so library found: %d\n", so_found);
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} else {
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tlogd("request from kernel\n");
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}
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#ifdef CONFIG_ASAN_DEBUG
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tloge("so auth disabled for ASAN debug\n");
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uint32_t so_hash_len = MAX_SHA_256_SZ * NUM_OF_SO;
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errno_t sret = memset_s(session->auth_hash_buf, so_hash_len, 0, so_hash_len);
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if (sret) {
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tloge("memset so hash failed\n");
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return -EFAULT;
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}
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#endif
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rc = calc_task_hash(session->auth_hash_buf + MAX_SHA_256_SZ * NUM_OF_SO,
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(uint32_t)SHA256_DIGEST_LENGTH, cur_struct);
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if (rc) {
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tloge("tee calc ca hash failed\n");
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return -EFAULT;
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}
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return EOK;
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}
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int calc_client_auth_hash(struct tc_ns_dev_file *dev_file,
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struct tc_ns_client_context *context, struct tc_ns_session *session)
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{
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int ret;
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LosTaskCB *cur_struct = NULL;
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bool check = false;
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check = (!dev_file || !context || !session);
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if (check) {
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tloge("bad params\n");
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return -EFAULT;
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}
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cur_struct = OsCurrTaskGet();
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ret = proc_calc_hash(dev_file->kernel_api, session, cur_struct);
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return ret;
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}
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