HWECC

特性

• ECC-P256 (defined in FIPS 186-4)

使用

1. 设备初始化

#include "app_hwecc_wrapper.h"
app_hwecc_init_wrapper();

Apollo系统已经自动执行过上述初始化，用户无需再次初始化。

2. ECC计算

void start_ecc_calculation(uint8_t const *secret_key,uint8_t const *public_key_x,uint8_t const *public_key_y,uint8_t *result_x,uint8_t *result_y,void (*callback)(void *),void *callback_param)
{
    ecc_queue_t ecc_param =
    {
        .in = {
            .secret_key = secret_key,
            .publick_key = {
                [0] = public_key_x,
                [1] = public_key_y,
            },
        },
        .out = {
            [0] = result_x,
            [1] = result_y,
        },
        .cb = callback,
        .dummy = callback_param,
    };
    app_hwecc_calculate_wrapper(&ecc_param);
}