Abstract: The Digital Signature is a technique which is used to validate the authenticity and integrity of the message. We know that there are four aspects of security: privacy, authentication, integrity, and non-repudiation. We have already discussed the first aspect of security and other three aspects can be achieved by using a digital signature.

Keywords- Private key, public key, encryption, technique, digital Signature, Pretty Good Privacy

| DOI: 10.17148/IARJSET.2021.81263