A digital signature is an attachment to any piece of electronics information which identifies the originality of that document. Digital signature of a person varies from person to person due to the private key.
To provide authenticity, integrity and non-repudiation, digital signature is the best thing. It makes our internet use safer. It is being used in electronic mail, electronic funds transfer, software distribution etc.
The approaches of digital signature are: Direct approach and Arbitrated approach. The applications are Electronic Mail, Data storage, Electronic funds transfer, Software Distribution. It has some drawbacks also.
