E-Lock cloud signing platform is an online service that allows individuals and businesses to sign documents in a quick and secure way. It allows you to sign files online from anywhere, at anytime in a legally valid way. It not only cuts cost and time needed to get documents signed, but also makes the processes easy and effective. It is a complete document approval system that allows businesses to design a customised workflow as suitable to them. It allows signing of PDF files using digital signature certificates (DSC).