Digital signature is the most advanced and secure type of electronic signature. One can use it to comply with the most demanding legal and regulatory requirements because it provide the highest levels of assurance about each signer's identity and the authenticity of the documents they sign.
Digital signatures use a certificate-based digital ID issued by an accredited Certificate Authority (CA) or Trust Service Provider (TSP), so, when you digitally sign a document, your identity is uniquely linked to you, the signature is bound to the document with encryption, and everything can be verified using underlying technology known as Public Key Infrastructure (PKI).
Digital signature is stored in USB token which is a password-protected physical device
Usage wise Types of Digital Signature:
- Class I - uses for securing email communication
- Class II - uses for company registrations, IT Return E-filing, GST Retun E-Filing, PF/ESI, etc.
- CLass III - Uses for E-tendering and participating in E-Auctions