How many keys are required, if you are to ensure a secret communication for every possible pair of communicating parties

Assuming that you’re using the desktop app: 1. open the discord app.2. click “connections” in the menu to the left.3. click “spotify.”4. a web page will open to connect. if you’re not already logged into spotify, it will ask you to log in.5. click “okay” to confirm.

Solution: the categorization of functional and non-functional requirement are as follows: some of the more typical functional requirements include: • business rules• transaction corrections, adjustments and cancellations• administrative functions• authentication• authorization levels• audit tracking• external interfaces• certification requirements• reporting requirements• historical data• legal or regulatory requirementswhile,some typical non-functional requirements are: • performance – for example response time, throughput, utilization, static volumetric• scalability• capacity• availability• reliability• recoverability• maintainability• serviceability• security• regulatory• manageability• environmental• data integrity• usability• interoperability