Digital certificates are the digital equivalent (i.e. electronic format) of physical or paper certificates. Examples of physical certificates are passports, driver's licenses or membership cards. Certificates serve as identity of an individual for a certain purpose, e.g. a driver's license identifies someone who can legally drive in a particular country. Likewise, a digital certificate can be presented electronically to prove your identity or your right to access information or services on the Internet. Thus, it is just as a handwritten signature is affixed to a printed letter for verification that the letter originated from its purported sender, digital signature performs the same task for an electronic message. A digital signature is an encrypted version of a message digest, attached together with a message.
Typically certificates are used to generate confidence in the legitimacy of a public key. In addition to verifying a signature, verifying the signer's certificate increase the confidence of the receiver in ensuring that attempted forgery or impersonation has not occurred.
Digital certificates can be used as to verify someone's (or some company's) identity. It can be used in a variety of ways including to control access on web sites, to create virtual private networks, to secure e-mail, and to guarantee the authenticity of downloaded software.
The certificate applicant must generate his/her own key pair and send the public key to the CA with some proof of his/her identification.
The CA will put the public key in a new certificate, digitally sign the certificate using its private key and then send the certificate to the applicant..
Note: The CA will check the certificate applicant's identification before it generates the certificate and signs the request. Different CAs may issue certificates with varying levels of identification requirements. One CA may insist on seeing the Identity card, another may want a signed letter authorizing certification from anyone requesting a certificate.
The identity and address proofs that are accepted by E-MUDRA-CA with respect to Digital Signature Certificate applications are given in the form itself:
1. Digital Signature Certificate – Individual - Click here.. |
2. Digital Signature Certificate – Organization - Click here.. |
3. Digital Signature Certificate - Foreign National - Click here.. |