Properties of Secure Communication

💡 The Core Idea

For communication to be considered secure, it must satisfy four main properties: Confidentiality, Integrity, Authentication, and Availability.

🧠 The Four Pillars

1. Confidentiality: Prevents eavesdropping. Ensures that only the sender and receiver can understand the message, usually achieved via encryption.
2. Integrity: Prevents modification. Ensures the message received is identical to the message sent, protecting against insertion or deletion of data.
3. Authentication: Prevents impersonation. Verifies that the parties are who they claim to be.
4. Availability: Prevents Denial of Service. Ensures the system is functional and accessible when needed.

🔗 Connections

• Source: Source - Internet Security