Following are the primary security features that any security system must offer. The intensity of each feature can be varied based on the application. The first four features are explained based on a situation where you want to send a confidential message to your friend. A digital signature ensures all of the following (first four)… Read More What are the primary security services?
Some of the key concepts of information security includes confidentiality, integrity, availability, authenticity and non-repudiation.  Digital signature is an efficient way maintaining integrity, authenticity and non-repudiation. A digitally signed message ensures that the message is sent by a known sender(authenticity), without any alternation(integrity) and the sender cannot deny that he send the message(non-repudiation). This… Read More Verifying digital signature using GPG