mirror of
https://github.com/trezor/trezor-firmware.git
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83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
#ifndef TREZORHAL_SECRET_H
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#define TREZORHAL_SECRET_H
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#include <stdint.h>
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#include "secbool.h"
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#ifdef KERNEL_MODE
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#define SECRET_HEADER_MAGIC "TRZS"
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#define SECRET_HEADER_LEN 16
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#define SECRET_OPTIGA_KEY_OFFSET 16
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#define SECRET_OPTIGA_KEY_LEN 32
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#define SECRET_MONOTONIC_COUNTER_OFFSET 48
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#define SECRET_MONOTONIC_COUNTER_LEN 1024
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#define SECRET_MONOTONIC_COUNTER2_OFFSET (SECRET_MONOTONIC_COUNTER_LEN + 48)
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#define SECRET_BHK_OFFSET (1024 * 8)
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#define SECRET_BHK_LEN 32
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// Writes data to the secret storage
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void secret_write(const uint8_t* data, uint32_t offset, uint32_t len);
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// Reads data from the secret storage
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secbool secret_read(uint8_t* data, uint32_t offset, uint32_t len);
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// Checks if the secret storage has been wiped
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secbool secret_wiped(void);
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// Verifies that the secret storage has correct header
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secbool secret_verify_header(void);
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// Erases the entire secret storage
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void secret_erase(void);
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// Writes the secret header to the secret storage
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void secret_write_header(void);
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// Writes optiga pairing secret to the secret storage
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// Encrypts the secret if encryption is available on the platform
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// Returns true if the secret was written successfully
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secbool secret_optiga_set(const uint8_t secret[SECRET_OPTIGA_KEY_LEN]);
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// Reads optiga pairing secret
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// Decrypts the secret if encryption is available on the platform
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// Returns true if the secret was read successfully
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// Reading can fail if optiga is not paired, the pairing secret was not
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// provisioned to the firmware (by calling secret_optiga_backup), or the secret
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// was made unavailable by calling secret_optiga_hide
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secbool secret_optiga_get(uint8_t dest[SECRET_OPTIGA_KEY_LEN]);
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// Checks if the optiga pairing secret is present in the secret storage
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secbool secret_optiga_present(void);
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// Checks if the optiga pairing secret can be written to the secret storage
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secbool secret_optiga_writable(void);
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// Erases optiga pairing secret from the secret storage
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void secret_optiga_erase(void);
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// Regenerates the BHK and writes it to the secret storage
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void secret_bhk_regenerate(void);
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// Prepares the secret storage for running the firmware
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// Provisions secrets/keys to the firmware, depending on the trust level
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// Disables access to the secret storage until next reset, if possible
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// This function is called by the bootloader before starting the firmware
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void secret_prepare_fw(secbool allow_run_with_secret, secbool trust_all);
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// Prepares the secret storage for running the boardloader and next stages
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// Ensures that secret storage access is enabled
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// This function is called by the boardloader
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void secret_init(void);
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#endif // KERNEL_MODE
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// Checks if bootloader is locked, that is the secret storage contains optiga
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// pairing secret on platforms where access to the secret storage cannot be
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// restricted for unofficial firmware
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secbool secret_bootloader_locked(void);
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#endif // TREZORHAL_SECRET_H
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