void PEM_proc_type(char *buf, int type)
	{
	const char *str;

	if (type == PEM_TYPE_ENCRYPTED)
		str="ENCRYPTED";
	else if (type == PEM_TYPE_MIC_CLEAR)
		str="MIC-CLEAR";
	else if (type == PEM_TYPE_MIC_ONLY)
		str="MIC-ONLY";
	else
		str="BAD-TYPE";
		
	strcat(buf,"Proc-Type: 4,");
	strcat(buf,str);
	strcat(buf,"\n");
	}