A digital certificate is issued by a trusted Certificate Authority and it is issued only for a limited time, after the expiration of the certificate a new certificate would be issued.Ī digital certificate alone can only verify the identity of the digital certificate’s owner by providing the public key that is required to verify the owner’s digital signature. One key from the key pair is used to Encrypt and the other key is used to decrypt the data and vice-versa.Ī digital Certificate establishes the owner’s identity and it makes the owners public key available. Public Key Cryptography or Asymmetric Cryptography uses two different cryptographic key pairs: A.) Private key and B.) Public key. Digital Certificate is also known as a public key certificate or identity certificate. The digital certificate is basically a digital form of identification by which consumers, businesses and organizations can exchange the data securely over the internet using the public key infrastructure (PKI). Access Control: Access to the protected information is only realized by the intended person or entity.Īll the above security properties can be achieved and implemented with the help of Digital Certificate through the use of Public Key Infrastructure (PKI) mechanism.Non-Repudiation: The sender cannot deny sending the message or transaction, and the receiver cannot deny receiving it.Authentication/Identification: The persons / entities with whom we are communicating are really who they say they are.Integrity: The information within the message or transaction is not tampered accidentally or deliberately.It may only be read and understood by the intended sender and receiver.
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