Shivam Sharma

Root CAs anchor trust and stay offline. Intermediate CAs handle daily issuance. Here's why the separation exists, how the chain works, and what happens when either is compromised.

Every certificate passes through six stages: request, validation, issuance, deployment, monitoring, and renewal or revocation. Here's what happens at each stage, who owns it, and where the process breaks.

Microsoft AD CS has been the enterprise PKI default for 20 years. Here's why organizations are migrating away, what modern alternatives exist, and how to execute the migration without breaking everything.

A Certificate Authority issues and signs digital certificates that establish trust on the internet. Here's what it does, how the trust model works, and where organizations get it wrong.

A practical guide to building a two-tier PKI with an offline Root CA and online Issuing CA. Includes architecture decisions, step-by-step setup, and the mistakes that will cost you at 2 AM.

A CBOM inventories every cryptographic algorithm, key, certificate, and protocol in your infrastructure. Here's why it's essential for PQC migration, compliance, and incident response — and how to build one.

RSA and ECC both provide asymmetric encryption, but they differ dramatically in key size, performance, and future-proofing. Here's a practical comparison with clear recommendations for TLS, code signing, SSH, and IoT.

Three open-source options for running your own Certificate Authority. Here's how EJBCA, Smallstep, and HashiCorp Vault PKI compare on features, complexity, and use cases — with clear recommendations.

Learn what certificate lifecycle management is, why shrinking TLS lifetimes make automation essential, and how enterprises manage PKI at scale.

Chrome fetches missing intermediates automatically. Java doesn't. Here's why your TLS works in browsers but breaks in Java, curl, and API clients — and how to fix incomplete certificate chains.