Frequently Asked Questions (FAQ)

Applications And Usage Of Digital Certificates

What actually happens when I digitally sign any transaction?

When you sign any transaction, you are using your private key. When the recipient receives the information with your certificate, he can verify the information using the public key on your certificate.

What is the difference between signing and encrypting e-mail?

Signing an e-mail message means you attach your Digital Certificate to it so that the recipient knows it came from you and was not tampered within route.

Encrypting a message means you "scramble" it in a way that only the intended recipient can "unscramble" it, which safeguards against monitoring.

Can I send secure e-mail to someone who does not have a Digital Certificate?

You can digitally sign any e-mail as long as the recipient has an e-mail application, which supports S/MIME. You cannot encrypt a message, however, unless you have the recipient's Digital Certificate.

How do I know if the e-mail I receive is signed or encrypted?

Netscape Communicator Users: Any signed e-mail you receive will have a prominent icon in the upper-right corner of the message saying "signed" or "encrypted" or both.

Microsoft Internet Explorer Users: Signed messages will be shown in the inbox (or any other folder) with a red ribbon on the envelope icon. Encrypted messages will show a padlock on the envelope icon.

I have a new e-mail address. Can I update my Digital Certificate?

Once a Digital Certificate has been issued it cannot be changed. Your Digital Certificate specifically verifies that your public key is bound to your stated e-mail address, so when you change addresses you need to request a new Digital Certificate.

I want to attach my digital signature for my email account at, how can I?

Unfortunately Web-based mail like Yahoo, Hotmail, Incredimail, MSN or AOL is not S/MIME compatible and so cannot be used with a Personal Email Certificate.

Can I use one Digital Certificate for multiple email addresses?

No you cannot.

I have downloaded Digital Certificate . Will it get automatically connected to "Outlook"?

After downloading and importing Digital Certificate in your web browser, you are ready to use your Digital Certificate with web browser but for using with your email client software you will have to configure necessary settings.

How can one digitally sign email using Outlook Web Access service provided by Microsoft Exchange Server, when that person is in remote places?

For this Assure Messaging Solution has to be integrated with the mail server to provide digital signature based access control.

My name has changed. Can I keep using the same Digital Certificate?

Sorry, but you cannot.

What is the scope of using digital signatures in the e-tendering system?

Yes, you can digital signatures for e-tendering.

Only following transactions/instruments are not recognized as per the IT Act

Negotiable Instrument as defined in section 13 of 26 of 1881. The Negotiable Instrument Act, 1881.

  • A power-of-attorney.
  • Succession Act/Will.
  • Transfer of Immovable property.
  • • Trust
Can digital signature be employed in a wireless network?

Yes, Digital Signature can be employed in wireless network.

I have purchased a Digital Certificate as individual. Can I use it for my website?

Sorry, you cannot use Digital Certificate which you have purchased as an individual for your website. For authenticating your website you will be in need of a different Digital Certificate which is called as SSL (secure socket layer) certificate.

Is the information contained in my Digital Certificate automatically sent to the websites I visit?

No, you control the presentation of your Digital Certificates to websites through the settings in your web browser.

Why do I need to validate a Digital Certificate?

When a document or transaction is signed using a Digital Certificate, it serves as a means of identifying the person who signed since a certificate and vouches for the owner's identity or association with a particular organization. It is important to validate a certificate to ensure that it has not been changed, revoked or has not expired.