1. What is Digital Signature?
Digital Signature is a mathematical scheme for 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, and that sender cannot deny having sent the message, and the message was not altered in transit.
Currently DSC is made on SHA-2 function.SHA stands for Secure Hash Algorithm. SHA is a set of cryptographic hash functions designed by the National Security Agency (NSA).
Example:
The Hash Value of PAN ABCDE1234F is
37dcec7eb4044482f0eb61396f2c69047ec91ba6331f857427cf39d1a29dfe86
Example:
The Hash value of AADHAR 782051368949 is
7fe719f492b349d98787f1eb360dd78
Misconceptions about DSC
Generally, people think DSC contains scan copy of their signature, this is wrong. The DSC works on cryptographic hash function designed by NSA.
Benefits of DSC
There are so many benefits of DSC but the most important benefit is that once we have signed any document with DSC it can't be tampered or changed.
Example: - While using DSC on MCA e-form, if user need to modify e-form, all DSCs attached in the e-form are cleared.
