Abstract
Today's implementation of digital signature consist of uniquely generated key connected with someone's digital identity (certificate). However, the current implementation of digital signature may present problem in official agreement, which needs legitimate identity information and needs to involve notary. This paper covers the method of digital signature creation which mimic physical signature in official agreement, and helps involve party being able to work with digital documents as well as working with physical documents. Using cloud computing approach, and mobile devices, we integrate signing service to user's national identity.
