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A digital signature is an electronic form of a signature that can be used to authenticate the identity of the sender of a message or the signer of a document, and also ensure that the original content of the message or document that has been sent is unchanged. Digital signatures are easily transportable and cannot be imitated by someone else. The ability to ensure that the original signed message arrived means that the sender cannot easily disclaim it later.
A Digital Signature Certificate (DSC) is a secure digital key that certifies the identity of the holder, issued by a Certifying Authority (CA). It typically contains your identity (name, email, country, APNIC account name and your public key). Digital Certificates use Public Key Infrastructure (PKI) meaning data that has been digitally signed or encrypted by a private key can only be decrypted by its corresponding public key. A digital certificate is an electronic mechanism that establishes your credentials when doing business or other transactions on the Internet.
The Information Technology Act, 2000, India, recognizes the Digital Signature Certificate as a legally valid signature. Digital Signature Certificates are generally a statutory requirement and can be issued, revoked or suspended by an authorized Certifying Authority (CA) under the Ministry of Information Technology.
