static void asn1_put_length(unsigned char **pp, int length)
	{
	unsigned char *p= *pp;
	int i,l;
	if (length <= 127)
		*(p++)=(unsigned char)length;
	else
		{
		l=length;
		for (i=0; l > 0; i++)
			l>>=8;
		*(p++)=i|0x80;
		l=i;
		while (i-- > 0)
			{
			p[i]=length&0xff;
			length>>=8;
			}
		p+=l;
		}
	*pp=p;
	}