#include "common.h"

char *sha1_to_hex(const unsigned char *sha1, char *buffer) {
  static const char hex[] = "0123456789abcdef";
  char *buf = buffer;

  for (int i = 0; i < UNIQUE_ID_SIZE; i++) {
    unsigned int val = *sha1++;
    *buf++ = hex[val >> 4];
    *buf++ = hex[val & 0xf];
  }
  *buf = '\0';

  return buffer;
}