Security protocols analysis including various time parameters

Communication is a key element of everyone's life. Nowadays, we most often use internet connections for communication. We use the network to communicate with our family, make purchases, we operate home appliances, and handle various matters related to public administration. Moreover, the Internet enables us to participate virtually in various official meetings or conferences. There is a risk of losing our sensitive data, as well as their use for malicious purposes. In this situation, each connection should be secured with an appropriate security protocol. These protocols also need to be regularly checked for vulnerability to attacks. In this article, we consider a tool that allows to analyze different executions of security protocols as well as simulate their operation. This research enables the gathering of knowledge about the behaviour of the security protocol, taking into account various time parameters (time of sending the message, time of generation confidential information, encryption and decryption times, delay in the network, lifetime) and various aspects of computer networks. The conducted research and analysis of the obtained results enable the evaluation of the protocol security and its vulnerability to attacks. Our approach also assumes the possibility of setting time limits that should be met during communication and operation of the security protocol. We show obtained results on Andrew and Needham Schroeder Public Key protocols examples.