Digital signatures serve as a digital equivalent of a handwritten signature but offer additional security features.
They are based on cryptographic algorithms that create a unique digital fingerprint for each document. This fingerprint,
known as a hash, is encrypted using a private key and attached to the document. Anyone with access to the public key can
Sverify the signature, ensuring that the document has not been altered since it was signed.

Type of Digital Signature
1) CLASS 3A DIGITAL SIGNATURE (Signing Only)
2)CLASS 3b DIGITAL SIGNATURE (Signing & Encryption)
2) DGFT DIGITAL SIGNATURE
3) DOCUMENT SIGNER