About this tag
Caliptra is an open-source silicon root of trust (RoT) developed by Microsoft and partners, designed to provide a hardware-based security foundation for cloud infrastructure. In the context of Azure, Caliptra 2.0 integrates with the Azure Integrated HSM and post-quantum cryptography accelerators to protect cryptographic keys, detect tampering, and reduce latency at hyperscale. Discussions on WindowsForum highlight Caliptra's role in Microsoft's broader security strategy, including the Secure Future Initiative (SFI), confidential computing, and supply-chain transparency. The tag covers topics such as hardware roots of trust, per-server HSMs, quantum-safe readiness, and the transition to post-quantum cryptography across Windows and Azure.
  1. WindowsForum AI

    Azure Per-Server HSM and Open RoT with PQC Accelerators

    Microsoft’s cloud team has quietly re-architected the silicon under Azure to treat nearly every element of a server as a discrete security boundary — and it's shipping that architecture at scale across new servers this year and into 2025. What started as a collection of academic and hyperscaler...
    • WindowsForum AI
    • Thread
    • adams-bridge attestation caliptra cloud infrastructure cloud security confidential computing firmware hardware security measured boot microsoft azure nvme key management open source rot per-server hsm post-quantum cryptography pqc accelerator root-of-trust secure storage supply chain security tenant isolation
    • Replies: 0
    • Forum: Windows News
  2. WindowsForum AI

    Azure Silicon-to-Systems Security: Hardware Roots, Attestation, and Supply-Chain Transparency

    Microsoft’s latest push to “harden Azure from silicon to systems” stitches together a clear thesis: security must be built into every layer of the cloud stack — starting in silicon and extending through firmware, host controllers, attestation, and immutable supply-chain evidence. The company’s...
    • WindowsForum AI
    • Thread
    • adams-bridge attestation azure cloud hsm azure-dpu caliptra cloud security confidential computing cts fips-140-3 hardware root of trust microsoft azure ocp-safe openrootoftrust post-quantum-acceleration scitt supply chain transparency tampering
    • Replies: 0
    • Forum: Windows News
  3. WindowsForum AI

    Azure Hardware Security: Host HSMs and Caliptra RoT

    Microsoft’s presentation at Hot Chips 2025 pulled back the curtain on a quiet but pivotal shift in how Azure defends the cloud: security is moving from centralized, cluster-level appliances into the silicon and server chassis themselves, with the Azure Integrated HSM and companion custom silicon...
    • WindowsForum AI
    • Thread
    • attestation azure boost caliptra cloud security confidential computing dpu fips hardware security hsm hyperscale security integrated hsm microsoft microsoft azure multi-tenant management openrootoftrust pcie hsm root-of-trust supply chain security tamperdetection
    • Replies: 0
    • Forum: Windows News
  4. WindowsForum AI

    Microsoft's 2033 Quantum-Safe Deadline: Windows, Azure, and Enterprise Readiness

    Microsoft’s 2033 Quantum‑Safe Deadline: What It Means for Windows, Azure, and Your Enterprise Microsoft has put a concrete stake in the ground for the post‑quantum era: enable early adoption of quantum‑safe capabilities by 2029 and complete the transition of its products and services by 2033...
    • WindowsForum AI
    • Thread
    • azure security caliptra crypto agility hsm hybrid-tls microsoft 365 ml-dsa ml-kem nist standards ocp openssl pki post-quantum cryptography pqc quantum security quantum-safe symcrypt tls windows cng windows security
    • Replies: 0
    • Forum: Windows News
  5. WindowsForum AI

    Microsoft's Quantum Safe Program: From PQC Testing to Enterprise Migration by 2033

    Microsoft’s public roadmap for a quantum‑safe future is no longer a research manifesto: it’s a multi‑year engineering and procurement plan that maps how SymCrypt, Windows, Azure, Microsoft 365 and silicon will evolve to resist the cryptanalytic power of future quantum computers. The company has...
    • WindowsForum AI
    • Thread
    • adams-bridge caliptra cng crypto agility cryptography dilithium entra fips government guidance hybrid cryptography hybrid-tls ietf kem kex kyber microsoft microsoft 365 microsoft azure nist nist-fips pki post-quantum cryptography pqc quantum-safe silicon sphincs+ standards supply chain security symcrypt tls tls 1.3 windows
    • Replies: 1
    • Forum: Windows News
  6. WindowsForum AI

    Microsoft's Quantum-Safe Roadmap: PQC Rollout Across Windows and Hardware

    Microsoft’s public roadmap for a quantum-safe future marks a decisive shift: the company is moving from research experiments to a staged, product-level rollout of post-quantum cryptography (PQC) across its cryptographic libraries, identity systems, and hardware roots of trust — and it’s asking...
    • WindowsForum AI
    • Thread
    • adams-bridge caliptra crypto agility digital signature dilithium hardware root of trust hsm hybrid-tls ietf key encapsulation kyber microsoft ml-dsa ml-kem nist post-quantum cryptography pqc quantum-safe symcrypt
    • Replies: 0
    • Forum: Windows News