Shanghai Hangxin ACM32F070 Development Board + Touch Function Evaluation Board - Part 4 HRNG Module and Random Number Generation Time Measurement

oxygen_sh

Shanghai Hangxin ACM32F070 Development Board + Touch Function Evaluation Board - Part 4 HRNG Module and Random Number Generation Time Measurement [Copy link]

 

This evaluation experiment uses the TRNG module to generate 256-bit random numbers and measures the random number generation time.

According to chip data, the HRNG module contains a reliable noise oscillator that generates random numbers that meet international and national cryptographic testing standards.

The execution time of the random number generation function HAL_HRNG_GetHrng() can be measured using Systick. See the code below for details.

Here is the implementation code:

void APP_Hrng_Test(void)
{
	UINT32 i;
	UINT32 j;
	UINT32 tickcount;

	printfS("---------HRNG test-------\n");
	SysTick->VAL   = 0UL;  
	HAL_HRNG_GetHrng(data_buf, 32);
	tickcount = SysTick->VAL;
	tickcount = 640000 - tickcount;
	printfS("time used: %d us\r\n", tickcount/64);
	
	for(i = 1; i < 32; i++)
	{
		printfS("%x", data_buf);

	}
		printfS("\r\n");
}

Test results: When the main clock frequency is 64MHz, the random number generation time is about 190us.

In addition, the generation time may differ by several us each time. Due to limited information about HRNG, it is unclear what causes this time difference.

Jacktang

There is not much information about HRNG. Netizens are welcome to share some

lugl4313820

According to the chip data, the HRNG module contains a reliable noise oscillator, and the random number generation meets international and national cryptographic testing standards. This function is quite powerful.