in src/oct.c [371:385]
void OCT_toHex(const octet *src,char *dst)
{
int i;
const char * hexadecimals = "0123456789abcdef";
unsigned char ch;
for (i=0; i<src->len; i++)
{
ch=src->val[i];
uint8_t res = ch / 16;
uint8_t mod = ch % 16;
dst[i*2] = hexadecimals[res];
dst[(i*2)+1] = hexadecimals[mod];
}
dst[i*2] =0;
}