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64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
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/*
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* SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef _KM_H
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#define _KM_H
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#include "soc/soc_caps.h"
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#if SOC_KEY_MANAGER_SUPPORTED
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#include <stdint.h>
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#include "soc/soc.h"
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#include "ets_sys.h"
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#if __cplusplus
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extern "C" {
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#endif
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/* huk mode type */
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typedef enum {
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HUK_MODE_RECOVER = 0,
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HUK_MODE_GEN = 1,
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} huk_mode_t;
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/**
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* @brief Recover efuse key or key manager key if flash encryption is enabled
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*
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* @param do_log : if km process print log
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*
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* @return ETS_OK when key is recovered, ETS_FAILED when key not recovered
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*/
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ETS_STATUS esp_rom_check_recover_key(int do_log);
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/**
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* @brief Configure huk mode
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*
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* @param mode : HUK_MODE_RECOVER or HUK_MODE_GEN
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*
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* @param huk_info : uint8_t pointer to the buffer which will feed the huk info or
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* gain the huk info
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*
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* @return ETS_OK when huk configuration is done, else ETS_FAILED
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*/
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ETS_STATUS esp_rom_km_huk_conf(huk_mode_t mode, uint8_t *huk_info);
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/**
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* @brief Get huk risk. The risk level of HUK is 0-6: the higher the risk level is,
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* the more error bits there are in the PUF SRAM. 7: Error level, HUK is invalid
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*
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* @param None
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*
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* @return The huk risk
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*/
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int esp_rom_km_huk_risk(void);
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#ifdef __cplusplus
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}
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#endif
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#endif
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#endif /* _KM_H */
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