Subject Alternative Names (SANs) in Digital Certificates

When it comes to digital certificates, the Subject Alternative Name (SAN) extension plays a crucial role in how modern systems authenticate and communicate securely. Although the Common Name (CN) field traditionally carried the hostname of a server, today it’s the SAN extension that browsers and applications actually pay attention to. In fact, industry standards have…

ECDHE

ECDHE (Elliptic Curve Diffie-Hellman Ephemeral) is a cryptographic algorithm used for secure key exchange in network protocols like TLS (Transport Layer Security). Its main function is to enable two parties (e.g., client and server) to agree on a shared secret over an insecure network, without transmitting the secret itself. This fact almost alone has ensured…

Transport Layer Security (TLS)

Transport Layer Security (TLS) is a cryptographic protocol that protects data when it is transferred between devices over a network. It is commonly used to secure web-based applications over the internet. Given the explosion in cloud services, mobile computing and IoT devices, the underlying technology to secure the data in transit has become of critical…