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feat(ecc): enable ECC constant time mode for ESP32-H2 ECO5

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This commit is contained in:
Mahavir Jain
2024-10-22 15:17:16 +05:30
committed by BOT
parent 2fe702e8f7
commit 748d29b5ad
15 changed files with 58 additions and 23 deletions
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13
components/mbedtls/port/ecc/esp_ecc.c
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@@ -45,14 +45,13 @@ int esp_ecc_point_multiply(const ecc_point_t *point, const uint8_t *scalar, ecc_
ecc_hal_write_mul_param(scalar, point->x, point->y, len);
ecc_hal_set_mode(work_mode);
#ifdef SOC_ECC_CONSTANT_TIME_POINT_MUL
/* Enable constant-time point multiplication operations for the ECC hardware accelerator
This protects the ECC multiplication operation from timing attacks.
This increases the time taken (by almost 50%) for some point multiplication
operations performed by the ECC hardware accelerator.
*/
/*
* Enable constant-time point multiplication operations for the ECC hardware accelerator,
* if supported for the given target. This protects the ECC multiplication operation from
* timing attacks. This increases the time taken (by almost 50%) for some point
* multiplication operations performed by the ECC hardware accelerator.
*/
ecc_hal_enable_constant_time_point_mul(true);
#endif /* SOC_ECC_CONSTANT_TIME_POINT_MUL */
ecc_hal_start_calc();
memset(result, 0, sizeof(ecc_point_t));