Function digest_str

src/base/hash.cpp:7–28

#include "str.h"

static void digest_str(const unsigned char *digest, size_t digest_len, char *str, size_t max_len)
{
	if(max_len > digest_len * 2 + 1)
	{
		max_len = digest_len * 2 + 1;
	}
	str[max_len - 1] = 0;
	max_len -= 1;
	for(size_t i = 0; i < max_len; i++)
	{
		static const char HEX[] = "0123456789abcdef";
		size_t index = i / 2;
		if(i % 2 == 0)
		{
			str[i] = HEX[digest[index] >> 4];
		}
		else
		{
			str[i] = HEX[digest[index] & 0xf];
		}
	}
}

SHA256_DIGEST sha256(const void *message, size_t message_len)
{