Computerized marks work since open key cryptography relies upon two commonly confirming cryptographic keys. The person who is making the computerized mark utilizes their own private key to scramble signature-related information; the best way to decode that information is with the underwriter's open key.
Best digital signature provider in Delhi are...
I) Exploring Vision
II) SARAF ARYA GUPTA & CO.
III) Sapna Gupta
IV) KRGS & Associates
V) GGP & Associates
These are some good companies.
Hope my answer will help you..