Digital signature is a mathematical scheme for demonstrating the authenticity of a digital message or document. A valid digital signature gives a recipient reason to believe that the message was created by a known sender, such that the sender cannot deny having sent the message.
Digital signature certificates (DSC) are the digital equivalent (that is electronic format) of physical or paper certificates. Examples of physical certificates are drivers' licenses, passports or membership cards. Certificates serve as a proof of identity of an individual for a certain purpose; for example a Passport is required to travel in foreign country. Likewise, a digital certificate electronically proves your identity, to access information or or to sign certain documents digitally.
Like physical documents are signed manually, electronic documents, for example e-forms are required to be signed digitally using a Digital Signature Certificate.
The different types of Digital Signature Certificates are: Class 2: Here, the identity of a person is verified against a trusted, pre-verified database. Class 3: This is the highest level where the person needs to present himself or herself in front of a Registration Authority (RA) and prove his / her identity.
USB Token can be password protected so that Digital Signature is never lost when computer is formatted or internet explorer changed. A virus cannot affect USB Token, and the digital certificate stored would always be secure.
As per the security guideline and for digital signature certificate it is advisable that you should Use Internet explorer Version 5.5 Or Above.
Digital Signatures are legally admissible as per IT ACT 2000.
You should not share your digital signature certificate or its Password to anybody as it contains confidential details of particular company or individuals.