-
Notifications
You must be signed in to change notification settings - Fork 7.3k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge branch 'feature/esp32c6_enable_hmac_and_ds_support' into 'master'
Feature/esp32c6 enable hmac and ds support Closes IDF-5355 and IDF-5360 See merge request espressif/esp-idf!21761
- Loading branch information
Showing
13 changed files
with
393 additions
and
17 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| /* | ||
| * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| /******************************************************************************* | ||
| * NOTICE | ||
| * The hal is not public api, don't use it in application code. | ||
| ******************************************************************************/ | ||
|
|
||
| #pragma once | ||
|
|
||
| #include <stdint.h> | ||
| #include <stdbool.h> | ||
| #include <string.h> | ||
|
|
||
| #include "soc/hwcrypto_reg.h" | ||
| #include "soc/soc_caps.h" | ||
|
|
||
| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
|
|
||
| static inline void ds_ll_start(void) | ||
| { | ||
| REG_WRITE(DS_SET_START_REG, 1); | ||
| } | ||
|
|
||
| /** | ||
| * @brief Wait until DS peripheral has finished any outstanding operation. | ||
| */ | ||
| static inline bool ds_ll_busy(void) | ||
| { | ||
| return (REG_READ(DS_QUERY_BUSY_REG) > 0) ? true : false; | ||
| } | ||
|
|
||
| /** | ||
| * @brief Busy wait until the hardware is ready. | ||
| */ | ||
| static inline void ds_ll_wait_busy(void) | ||
| { | ||
| while (ds_ll_busy()); | ||
| } | ||
|
|
||
| /** | ||
| * @brief In case of a key error, check what caused it. | ||
| */ | ||
| static inline ds_key_check_t ds_ll_key_error_source(void) | ||
| { | ||
| uint32_t key_error = REG_READ(DS_QUERY_KEY_WRONG_REG); | ||
| if (key_error == 0) { | ||
| return DS_NO_KEY_INPUT; | ||
| } else { | ||
| return DS_OTHER_WRONG; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @brief Write the initialization vector to the corresponding register field. | ||
| */ | ||
| static inline void ds_ll_configure_iv(const uint32_t *iv) | ||
| { | ||
| for (size_t i = 0; i < (SOC_DS_KEY_PARAM_MD_IV_LENGTH / sizeof(uint32_t)); i++) { | ||
| REG_WRITE(DS_IV_MEM + (i * 4) , iv[i]); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @brief Write the message which should be signed. | ||
| * | ||
| * @param msg Pointer to the message. | ||
| * @param size Length of msg in bytes. It is the RSA signature length in bytes. | ||
| */ | ||
| static inline void ds_ll_write_message(const uint8_t *msg, size_t size) | ||
| { | ||
| memcpy((uint8_t*) DS_X_MEM, msg, size); | ||
| asm volatile ("fence"); | ||
| } | ||
|
|
||
| /** | ||
| * @brief Write the encrypted private key parameters. | ||
| */ | ||
| static inline void ds_ll_write_private_key_params(const uint8_t *encrypted_key_params) | ||
| { | ||
| /* Note: as the internal peripheral still has RSA 4096 structure, | ||
| but C is encrypted based on the actual max RSA length (ETS_DS_MAX_BITS), need to fragment it | ||
| when copying to hardware... | ||
| (note if ETS_DS_MAX_BITS == 4096, this should be the same as copying data->c to hardware in one fragment) | ||
| */ | ||
| typedef struct { uint32_t addr; size_t len; } frag_t; | ||
| const frag_t frags[] = { | ||
| {DS_Y_MEM, SOC_DS_SIGNATURE_MAX_BIT_LEN / 8}, | ||
| {DS_M_MEM, SOC_DS_SIGNATURE_MAX_BIT_LEN / 8}, | ||
| {DS_RB_MEM, SOC_DS_SIGNATURE_MAX_BIT_LEN / 8}, | ||
| {DS_BOX_MEM, DS_IV_MEM - DS_BOX_MEM}, | ||
| }; | ||
| const size_t NUM_FRAGS = sizeof(frags)/sizeof(frag_t); | ||
| const uint8_t *from = encrypted_key_params; | ||
|
|
||
| for (int i = 0; i < NUM_FRAGS; i++) { | ||
| memcpy((uint8_t *)frags[i].addr, from, frags[i].len); | ||
| asm volatile ("fence"); | ||
| from += frags[i].len; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @brief Begin signing procedure. | ||
| */ | ||
| static inline void ds_ll_start_sign(void) | ||
| { | ||
| REG_WRITE(DS_SET_CONTINUE_REG, 1); | ||
| } | ||
|
|
||
| /** | ||
| * @brief check the calculated signature. | ||
| * | ||
| * @return | ||
| * - DS_SIGNATURE_OK if no issue is detected with the signature. | ||
| * - DS_SIGNATURE_PADDING_FAIL if the padding of the private key parameters is wrong. | ||
| * - DS_SIGNATURE_MD_FAIL if the message digest check failed. This means that the message digest calculated using | ||
| * the private key parameters fails, i.e., the integrity of the private key parameters is not protected. | ||
| * - DS_SIGNATURE_PADDING_AND_MD_FAIL if both padding and message digest check fail. | ||
| */ | ||
| static inline ds_signature_check_t ds_ll_check_signature(void) | ||
| { | ||
| uint32_t result = REG_READ(DS_QUERY_CHECK_REG); | ||
| switch(result) { | ||
| case 0: | ||
| return DS_SIGNATURE_OK; | ||
| case 1: | ||
| return DS_SIGNATURE_MD_FAIL; | ||
| case 2: | ||
| return DS_SIGNATURE_PADDING_FAIL; | ||
| default: | ||
| return DS_SIGNATURE_PADDING_AND_MD_FAIL; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @brief Read the signature from the hardware. | ||
| * | ||
| * @param result The signature result. | ||
| * @param size Length of signature result in bytes. It is the RSA signature length in bytes. | ||
| */ | ||
| static inline void ds_ll_read_result(uint8_t *result, size_t size) | ||
| { | ||
| memcpy(result, (uint8_t*) DS_Z_MEM, size); | ||
| asm volatile ("fence"); | ||
| } | ||
|
|
||
| /** | ||
| * @brief Exit the signature operation. | ||
| * | ||
| * @note This does not deactivate the module. Corresponding clock/reset bits have to be triggered for deactivation. | ||
| */ | ||
| static inline void ds_ll_finish(void) | ||
| { | ||
| REG_WRITE(DS_SET_FINISH_REG, 1); | ||
| ds_ll_wait_busy(); | ||
| } | ||
|
|
||
| #ifdef __cplusplus | ||
| } | ||
| #endif |
Oops, something went wrong.