Digital Certificate : A digital certificate is an electronic "Passport" those allows a person computer or organization to exchange information securely over the internet using the public key infrastructure. An attachment to an electronic message used for security purpose.The most common use of a digital certificate is to verify that a user sending message is who he or she claims to be and to provide the receiver with the means to encode a reply.A digital certificate authenticates the web credentials of the sender and lets the recipient of an encrypted message know that the data is form a trusted source. A digital certificate is issued by a certification authority(CA).
Digital certificates are used with self-signatures and message encryption.
Digital certificates are also known as public key certificates or identity certificates.
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