What is PKI? Public key infrastructure explained
How certificates, chains and certificate authorities make public keys trustworthy, India's licensed certifying authorities, and the move to short-lived certificates.
#tls
9 articles tagged #tls
Articles
How SSL/TLS works: the handshake, certificates and session keys
A step-by-step walk through the TLS 1.3 handshake, how certificates prove a site is genuine, and how session keys keep each connection private.
Encryption at rest vs in transit: what each protects
In transit protects data on the network, at rest protects it in storage, and neither covers data in use. What each one stops, what cloud defaults cover and how to answer questionnaires.
What is HTTPS, and why every site needs it
HTTPS encrypts and protects every page between your server and your visitors. Why even a simple institute website needs it, and how to set it up properly.
What is mTLS, how does it work, and why does almost nobody use it?
Mutual TLS makes both sides of a connection prove who they are. It's common between servers but rare for people. Here's how it works, and why.
Post-quantum cryptography: what changes and when
Quantum computers threaten RSA and elliptic curves, not AES. NIST's new standards, harvest now decrypt later, hybrid key exchange in browsers, and a plan for platforms.
Diffie-Hellman key exchange, explained simply
How two devices agree on a secret key in public: the colour-mixing analogy, a small-number worked example, forward secrecy, man-in-the-middle attacks and post-quantum hybrids.
Cipher suites explained: TLS 1.3 and forward secrecy
Decode a cipher suite name part by part, see TLS 1.3's five suites, learn which weak suites to remove after RFC 10015, and test what your server really accepts.
TLS 1.2 vs TLS 1.3: what changed and why it matters
TLS 1.3 connects faster and drops the options behind a decade of attacks. What changed, what 0-RTT risks, what it means on mobile, and whether to keep TLS 1.2.
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