What is digital certificate ?
A digital certificate is a digital Identity, an electronic credential that are used to verify the Identity of an organisation , person or computer.
Digital certificate mainly used for exchange information over internet securly.Every digital certificate have a unique Identity key known as "public key".
Digital certificate only issued by trusted authority.
Digital certificate contains below list of properties.
* Name of the certificate holder.
* A Serial number of Digital Certificate
* Expiration date of Digital Certificate.
* Information about issuing authority.
A digital certificate signed by CA root certificate to provide proof of validity of certificate.
What is digital signature ?
Digital signature is an electronic signature securely associate with signer. By using digital certificate user can sign documents, software.
When a signer electronically sign a document, the signature is created using owner private key. Which is securely kept by owner.
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