Encryption vs Authentication: The Two Jobs a Certificate Does

SSL/TLS certificates are routinely discussed as though "encryption" is their whole job, but a certificate actually performs two distinct, separable functions — encrypting data in transit, and authenticating the identity of the party on the other end of the connection…

Perfect Forward Secrecy: Why It Protects Yesterday’s Traffic Too

Perfect Forward Secrecy addresses a specific, easily overlooked risk in encrypted communication: without it, a single future compromise of a server's long-term private key can retroactively unlock every encrypted session that server has ever handled, including traffic recorded and stored…