esp-idf/components/mbedtls/test/test_ecp.c

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/* mbedTLS Elliptic Curve functionality tests
Focus on testing functionality where we use ESP32 hardware
accelerated crypto features.
*/
#include <string.h>
#include <stdio.h>
#include <stdbool.h>
#include <esp_system.h>
#include <mbedtls/entropy.h>
#include <mbedtls/ctr_drbg.h>
#include <mbedtls/ecdh.h>
#include <mbedtls/ecdsa.h>
#include <mbedtls/error.h>
#include "unity.h"
/* Note: negative value here so that assert message prints a grep-able
error hex value (mbedTLS uses -N for error codes) */
#define TEST_ASSERT_MBEDTLS_OK(X) TEST_ASSERT_EQUAL_HEX32(0, -(X))
TEST_CASE("mbedtls ECDH Generate Key", "[mbedtls]")
{
mbedtls_ecdh_context ctx;
mbedtls_entropy_context entropy;
mbedtls_ctr_drbg_context ctr_drbg;
mbedtls_ecdh_init(&ctx);
mbedtls_ctr_drbg_init(&ctr_drbg);
mbedtls_entropy_init(&entropy);
TEST_ASSERT_MBEDTLS_OK( mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy, NULL, 0) );
TEST_ASSERT_MBEDTLS_OK( mbedtls_ecp_group_load(&ctx.grp, MBEDTLS_ECP_DP_CURVE25519) );
TEST_ASSERT_MBEDTLS_OK( mbedtls_ecdh_gen_public(&ctx.grp, &ctx.d, &ctx.Q,
mbedtls_ctr_drbg_random, &ctr_drbg ) );
mbedtls_ecdh_free(&ctx);
mbedtls_ctr_drbg_free(&ctr_drbg);
mbedtls_entropy_free(&entropy);
}
TEST_CASE("mbedtls ECP self-tests", "[mbedtls]")
{
TEST_ASSERT_EQUAL(0, mbedtls_ecp_self_test(1));
}
TEST_CASE("mbedtls ECP mul w/ koblitz", "[mbedtls]")
{
/* Test case code via https://github.com/espressif/esp-idf/issues/1556 */
mbedtls_entropy_context ctxEntropy;
mbedtls_ctr_drbg_context ctxRandom;
mbedtls_ecdsa_context ctxECDSA;
const char* pers = "myecdsa";
mbedtls_entropy_init(&ctxEntropy);
mbedtls_ctr_drbg_init(&ctxRandom);
TEST_ASSERT_MBEDTLS_OK( mbedtls_ctr_drbg_seed(&ctxRandom, mbedtls_entropy_func, &ctxEntropy,
(const unsigned char*) pers, strlen(pers)) );
mbedtls_ecdsa_init(&ctxECDSA);
TEST_ASSERT_MBEDTLS_OK( mbedtls_ecdsa_genkey(&ctxECDSA, MBEDTLS_ECP_DP_SECP256K1,
mbedtls_ctr_drbg_random, &ctxRandom) );
TEST_ASSERT_MBEDTLS_OK(mbedtls_ecp_mul(&ctxECDSA.grp, &ctxECDSA.Q, &ctxECDSA.d, &ctxECDSA.grp.G,
mbedtls_ctr_drbg_random, &ctxRandom) );
mbedtls_ecdsa_free(&ctxECDSA);
mbedtls_ctr_drbg_free(&ctxRandom);
mbedtls_entropy_free(&ctxEntropy);
}