SSL, or Secure Sockets Layer, is a protocol used to establish secure and encrypted communication between a web browser and a server, or between any two systems over the internet. It ensures data confidentiality, integrity, and authentication.

Key Features of SSL:

  1. Encryption: Data transmitted between the server and client is encrypted, making it difficult for attackers to intercept and read the information.
  2. Authentication: Ensures that the server (and sometimes the client) is who they claim to be through digital certificates.
  3. Data Integrity: Prevents unauthorized alteration of data during transmission.

How SSL Works:

  1. Handshake Process:
    • The client (e.g., a web browser) sends a request to the server to establish a secure session.
    • The server responds by providing its SSL certificate, which includes its public key.
    • The client verifies the certificate with a trusted Certificate Authority (CA).
    • If verified, the client and server generate a shared session key for encrypting the communication.
  2. Secure Communication:
    • Once the session key is established, all subsequent data is encrypted.

Types of SSL Certificates:

  1. Domain Validation (DV): Confirms the ownership of the domain.
  2. Organization Validation (OV): Verifies the organization and domain ownership.
  3. Extended Validation (EV): Offers the highest level of trust by verifying the legal identity of the organization.

Common Uses of SSL:

  • Securing websites (shown as HTTPS instead of HTTP in the URL).
  • Protecting sensitive data like credit card numbers, login credentials, and personal information.
  • Establishing secure connections for email, file transfers, and remote access.

Voici le seul résultat