mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
319 lines
8.2 KiB
C
319 lines
8.2 KiB
C
/*
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* SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: CC0-1.0
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*/
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#include <stdio.h>
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#include <stdbool.h>
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#include <string.h>
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#include "esp_private/esp_crypto_lock_internal.h"
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#include "esp_random.h"
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#include "hal/clk_gate_ll.h"
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#include "hal/ecdsa_hal.h"
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#include "hal/ecdsa_ll.h"
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#include "hal/ecdsa_types.h"
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#include "hal/ecc_ll.h"
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#include "hal/mpi_ll.h"
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#include "soc/soc_caps.h"
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#include "memory_checks.h"
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#include "unity_fixture.h"
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#include "ecdsa_params.h"
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static void ecdsa_enable_and_reset(void)
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{
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ECDSA_RCC_ATOMIC() {
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ecdsa_ll_enable_bus_clock(true);
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ecdsa_ll_reset_register();
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}
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ECC_RCC_ATOMIC() {
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ecc_ll_enable_bus_clock(true);
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ecc_ll_reset_register();
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}
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#ifdef SOC_ECDSA_USES_MPI
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MPI_RCC_ATOMIC() {
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mpi_ll_enable_bus_clock(true);
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mpi_ll_reset_register();
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}
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#endif
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}
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static void ecdsa_disable(void)
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{
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#ifdef SOC_ECDSA_USES_MPI
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MPI_RCC_ATOMIC() {
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mpi_ll_enable_bus_clock(false);
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}
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#endif
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ECC_RCC_ATOMIC() {
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ecc_ll_enable_bus_clock(false);
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}
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ECDSA_RCC_ATOMIC() {
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ecdsa_ll_enable_bus_clock(false);
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}
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}
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static void ecc_be_to_le(const uint8_t* be_point, uint8_t *le_point, uint8_t len)
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{
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memset(le_point, 0x0, 32);
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for (int i = 0; i < len; i++) {
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le_point[i] = be_point[len - i - 1];
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}
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}
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static int test_ecdsa_verify(bool is_p256, uint8_t* sha, uint8_t* r_le, uint8_t* s_le, uint8_t *pub_x, uint8_t *pub_y)
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{
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uint16_t len;
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uint8_t sha_le[32];
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ecdsa_hal_config_t conf = {
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.mode = ECDSA_MODE_SIGN_VERIFY,
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.sha_mode = ECDSA_Z_USER_PROVIDED,
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};
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if (is_p256) {
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conf.curve = ECDSA_CURVE_SECP256R1;
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len = 32;
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} else {
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conf.curve = ECDSA_CURVE_SECP192R1;
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len = 24;
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}
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/* Set HASH */
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ecc_be_to_le(sha, sha_le, len);
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ecdsa_enable_and_reset();
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int ret = ecdsa_hal_verify_signature(&conf, sha_le, r_le, s_le, pub_x, pub_y, len);
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ecdsa_disable();
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return ret;
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}
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static void test_ecdsa_corrupt_data(bool is_p256, uint8_t* sha, uint8_t* r_le, uint8_t* s_le, uint8_t *pub_x, uint8_t *pub_y)
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{
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int len;
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if (is_p256) {
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len = 32;
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} else {
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len = 24;
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}
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// Randomly select a bit and corrupt its corresponding value
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uint16_t r_bit = esp_random() % len * 8;
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printf("Corrupting SHA bit %d...\n", r_bit);
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sha[r_bit / 8] ^= 1 << (r_bit % 8);
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TEST_ASSERT_EQUAL(-1, test_ecdsa_verify(1, sha, r_le, s_le, pub_x, pub_y));
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sha[r_bit / 8] ^= 1 << (r_bit % 8);
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printf("Corrupting R bit %d...\n", r_bit);
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r_le[r_bit / 8] ^= 1 << (r_bit % 8);
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TEST_ASSERT_EQUAL(-1, test_ecdsa_verify(1, sha, r_le, s_le, pub_x, pub_y));
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r_le[r_bit / 8] ^= 1 << (r_bit % 8);
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printf("Corrupting S bit %d...\n", r_bit);
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s_le[r_bit / 8] ^= 1 << (r_bit % 8);
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TEST_ASSERT_EQUAL(-1, test_ecdsa_verify(1, sha, r_le, s_le, pub_x, pub_y));
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s_le[r_bit / 8] ^= 1 << (r_bit % 8);
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printf("Corrupting pub_x bit %d...\n", r_bit);
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pub_x[r_bit / 8] ^= 1 << (r_bit % 8);
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TEST_ASSERT_EQUAL(-1, test_ecdsa_verify(1, sha, r_le, s_le, pub_x, pub_y));
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pub_x[r_bit / 8] ^= 1 << (r_bit % 8);
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printf("Corrupting pub_y bit %d...\n", r_bit);
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pub_y[r_bit / 8] ^= 1 << (r_bit % 8);
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TEST_ASSERT_EQUAL(-1, test_ecdsa_verify(1, sha, r_le, s_le, pub_x, pub_y));
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pub_y[r_bit / 8] ^= 1 << (r_bit % 8);
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}
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static void test_ecdsa_sign(bool is_p256, uint8_t* sha, uint8_t* r_le, uint8_t* s_le, bool use_km_key)
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{
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uint8_t sha_le[32] = {0};
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uint8_t zeroes[32] = {0};
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uint16_t len;
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ecdsa_hal_config_t conf = {
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.mode = ECDSA_MODE_SIGN_GEN,
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.sha_mode = ECDSA_Z_USER_PROVIDED,
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.use_km_key = use_km_key,
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};
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if (is_p256) {
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conf.curve = ECDSA_CURVE_SECP256R1;
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if (use_km_key == 0) {
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conf.efuse_key_blk = 6;
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}
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len = 32;
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} else {
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conf.curve = ECDSA_CURVE_SECP192R1;
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if (use_km_key == 0) {
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conf.efuse_key_blk = 5;
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}
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len = 24;
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}
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/* Set HASH */
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ecc_be_to_le(sha, sha_le, len);
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ecdsa_enable_and_reset();
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bool process_again = false;
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do {
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ecdsa_hal_gen_signature(&conf, sha_le, r_le, s_le, len);
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process_again = !ecdsa_hal_get_operation_result()
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|| !memcmp(r_le, zeroes, len)
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|| !memcmp(s_le, zeroes, len);
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} while(process_again);
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ecdsa_disable();
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}
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static void test_ecdsa_sign_and_verify(bool is_p256, uint8_t* sha, uint8_t* pub_x, uint8_t* pub_y, bool use_km_key)
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{
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uint8_t r_le[32] = {0};
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uint8_t s_le[32] = {0};
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test_ecdsa_sign(is_p256, sha, r_le, s_le, use_km_key);
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TEST_ASSERT_EQUAL(0, test_ecdsa_verify(is_p256, sha, r_le, s_le, pub_x, pub_y));
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}
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#ifdef SOC_ECDSA_SUPPORT_EXPORT_PUBKEY
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static void test_ecdsa_export_pubkey(bool is_p256, bool use_km_key)
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{
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uint8_t pub_x[32] = {0};
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uint8_t pub_y[32] = {0};
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uint8_t zeroes[32] = {0};
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uint16_t len;
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ecdsa_hal_config_t conf = {
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.mode = ECDSA_MODE_EXPORT_PUBKEY,
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.use_km_key = use_km_key,
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};
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if (is_p256) {
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conf.curve = ECDSA_CURVE_SECP256R1;
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if (use_km_key == 0) {
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conf.efuse_key_blk = 6;
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}
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len = 32;
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} else {
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conf.curve = ECDSA_CURVE_SECP192R1;
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if (use_km_key == 0) {
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conf.efuse_key_blk = 5;
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}
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len = 24;
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}
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ecdsa_enable_and_reset();
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bool process_again = false;
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do {
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ecdsa_hal_export_pubkey(&conf, pub_x, pub_y, len);
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process_again = !ecdsa_hal_get_operation_result()
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|| !memcmp(pub_x, zeroes, len)
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|| !memcmp(pub_y, zeroes, len);
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} while (process_again);
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if (is_p256) {
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TEST_ASSERT_EQUAL_HEX8_ARRAY(ecdsa256_pub_x, pub_x, len);
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TEST_ASSERT_EQUAL_HEX8_ARRAY(ecdsa256_pub_y, pub_y, len);
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} else {
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TEST_ASSERT_EQUAL_HEX8_ARRAY(ecdsa192_pub_x, pub_x, len);
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TEST_ASSERT_EQUAL_HEX8_ARRAY(ecdsa192_pub_y, pub_y, len);
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}
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ecdsa_disable();
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}
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#endif /* SOC_ECDSA_SUPPORT_EXPORT_PUBKEY */
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TEST_GROUP(ecdsa);
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TEST_SETUP(ecdsa)
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{
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test_utils_record_free_mem();
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TEST_ESP_OK(test_utils_set_leak_level(0, ESP_LEAK_TYPE_CRITICAL, ESP_COMP_LEAK_GENERAL));
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}
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TEST_TEAR_DOWN(ecdsa)
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{
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test_utils_finish_and_evaluate_leaks(test_utils_get_leak_level(ESP_LEAK_TYPE_WARNING, ESP_COMP_LEAK_ALL),
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test_utils_get_leak_level(ESP_LEAK_TYPE_CRITICAL, ESP_COMP_LEAK_ALL));
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}
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TEST(ecdsa, ecdsa_SECP192R1_signature_verification)
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{
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TEST_ASSERT_EQUAL(0, test_ecdsa_verify(0, sha, ecdsa192_r, ecdsa192_s, ecdsa192_pub_x, ecdsa192_pub_y));
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}
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TEST(ecdsa, ecdsa_SECP192R1_sign_and_verify)
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{
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test_ecdsa_sign_and_verify(0, sha, ecdsa192_pub_x, ecdsa192_pub_y, 0);
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}
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TEST(ecdsa, ecdsa_SECP192R1_corrupt_signature)
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{
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test_ecdsa_corrupt_data(0, sha, ecdsa192_r, ecdsa192_s, ecdsa192_pub_x, ecdsa192_pub_y);
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}
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TEST(ecdsa, ecdsa_SECP256R1_signature_verification)
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{
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TEST_ASSERT_EQUAL(0, test_ecdsa_verify(1, sha, ecdsa256_r, ecdsa256_s, ecdsa256_pub_x, ecdsa256_pub_y));
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}
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TEST(ecdsa, ecdsa_SECP256R1_sign_and_verify)
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{
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test_ecdsa_sign_and_verify(1, sha, ecdsa256_pub_x, ecdsa256_pub_y, 0);
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}
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TEST(ecdsa, ecdsa_SECP256R1_corrupt_signature)
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{
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test_ecdsa_corrupt_data(1, sha, ecdsa256_r, ecdsa256_s, ecdsa256_pub_x, ecdsa256_pub_y);
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}
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#ifdef SOC_ECDSA_SUPPORT_EXPORT_PUBKEY
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TEST(ecdsa, ecdsa_SECP192R1_export_pubkey)
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{
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test_ecdsa_export_pubkey(0, 0);
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}
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TEST(ecdsa, ecdsa_SECP256R1_export_pubkey)
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{
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test_ecdsa_export_pubkey(1, 0);
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}
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#endif /* SOC_ECDSA_SUPPORT_EXPORT_PUBKEY */
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TEST_GROUP_RUNNER(ecdsa)
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{
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RUN_TEST_CASE(ecdsa, ecdsa_SECP192R1_signature_verification)
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RUN_TEST_CASE(ecdsa, ecdsa_SECP192R1_sign_and_verify)
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RUN_TEST_CASE(ecdsa, ecdsa_SECP192R1_corrupt_signature)
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RUN_TEST_CASE(ecdsa, ecdsa_SECP256R1_signature_verification)
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RUN_TEST_CASE(ecdsa, ecdsa_SECP256R1_sign_and_verify)
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RUN_TEST_CASE(ecdsa, ecdsa_SECP256R1_corrupt_signature)
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#ifdef SOC_ECDSA_SUPPORT_EXPORT_PUBKEY
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RUN_TEST_CASE(ecdsa, ecdsa_SECP192R1_export_pubkey)
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RUN_TEST_CASE(ecdsa, ecdsa_SECP256R1_export_pubkey)
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#endif /* SOC_ECDSA_SUPPORT_EXPORT_PUBKEY */
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}
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