All news with #post-quantum cryptography tag

Amazon S3 Adds Post-Quantum TLS Key Exchange Support

🔐 Amazon S3 now supports post-quantum TLS key exchange on regional S3, S3 Tables, and S3 Express One Zone endpoints using the NIST-standardized Module Lattice-Based Key Encapsulation Mechanism (ML-KEM). PQ-TLS key exchange is available at no additional cost across all AWS regions and will be negotiated automatically when clients are configured for ML-KEM. Combined with server-side AES-256 encryption by default, S3 offers quantum-resistant protection for data both in transit and at rest.

AWS Adds ML-DSA Post-Quantum Code Signing to Private CA

🔐 AWS announced support for post-quantum ML-DSA code signing in AWS Private CA, integrated with AWS KMS. The integration lets customers create ML-DSA X.509 certificate chains and generate KMS-held ML-DSA key pairs to sign binaries, enabling quantum-resistant code-signing, device authentication, and private-PKI workflows such as mTLS or IKEv2/IPsec. A provided Java Runner demonstrates CA creation, CSR issuance, CMS detached signing with SHAKE256, and signature verification against customer-managed roots.

AWS Private CA Adds ML-DSA Post-Quantum Certificates

🔐 AWS Private CA now supports the post-quantum digital signature algorithm ML-DSA (NIST FIPS 204), enabling organizations to create CAs and issue certificates designed to resist quantum attacks. The feature lets you test certificate issuance, identity verification, and code signing using ML-DSA, and supports CRLs and OCSP responders. Availability spans all commercial AWS Regions, AWS GovCloud (US), and China Regions to help teams begin transitioning PKI toward post-quantum cryptography.

Google Cloud's Roadmap to a Quantum-Safe Infrastructure

🔒 Google Cloud has been migrating its infrastructure toward post-quantum cryptography for nearly a decade to mitigate Store Now, Decrypt Later (SNDL) risks. The company has deployed the standards-based ML-KEM (FIPS 203) for key exchange across internal traffic and the Google Cloud networking stack, and introduced ML-KEM capabilities in Cloud KMS (preview) for key generation, encapsulation, and decapsulation. It also added native support for ML-DSA and SLH-DSA in Cloud KMS to protect long-lived digital signatures, and is phasing quantum-safe certificate support into Certificate Authority Service to enable future PQC-ready PKI. Administrators will receive tooling to opt in, audit cryptographic assets, and manage transitions to hybrid or pure PQC deployments as standards mature.

Policy, Privacy, and Post-Quantum Anonymous Credentials

🔒 Lena Heimberger examines the challenge of building post-quantum Anonymous Credentials that are practical for large-scale use. The post summarizes real-world needs — from the EU digital identity wallet to Cloudflare’s Privacy Pass rate-limiting — and defines key requirements like unlinkability, unforgeability, round-optimality, and per-origin rate limits. It surveys PQ approaches (generic ZKP composition, lattice-based signatures, hash-and-sign with aborts, and MPC-in-the-head/VOLEitH), evaluates trade-offs in bandwidth and latency, and calls for standardized ZK-friendly hashes and PQ-native protocol designs.

Signal Rolls Out Quantum-Safe Triple Ratchet (SPQR)

🔐 Signal has rolled out a quantum-safe update that adds a third ratchet, branded SPQR, to its secure messaging protocol. Instead of replacing the existing Double Ratchet, Signal runs a parallel KEM-based ratchet and derives encryption keys by mixing outputs from both ratchets with a KDF. Developed with PQShield, AIST, and NYU, the design preserves familiar behaviors while adding post-quantum resilience for forward secrecy and post-compromise protection.

Notable Post-Quantum Cryptography Initiatives 2023

🔐 The article surveys major post‑quantum cryptography (PQC) initiatives from 2023–2025 that aim to prepare governments and industry for an eventual Q‑Day. It highlights NIST's standardization of ML‑KEM, ML‑DSA and SLH‑DSA (with HQC later selected) and vendor adoption by Google, AWS, Microsoft and others, including Chrome's default hybrid key exchange. Collaborative efforts such as the Linux Foundation's PQCA, the PQC Coalition and IETF's PQUIP are creating tooling, guidance and implementations, while agencies and standards bodies provide migration roadmaps and practical advice on crypto agility and hybrid strategies to mitigate "harvest now, decrypt later" risks.

Major Milestone: Majority of Human Traffic Uses PQ TLS

🔒 Cloudflare reports that, as of late October 2025, the majority of human-initiated traffic through its network is protected with post‑quantum key agreement, reducing the risk of harvest‑now/decrypt‑later attacks. The post summarizes progress since the last update 21 months earlier: NIST standardization, broad adoption of ML‑KEM hybrids, Google's Willow milestone, and Craig Gidney's optimizations that materially moved Q‑day closer. It explains why migrating key agreement was urgent and relatively straightforward, why signature/certificate migration remains the harder challenge, and what organizations and regulators should prioritize now.

Signal Protocol's Path to Quantum-Resistant Messaging

🔒 Signal has moved to integrate post-quantum cryptography into its messaging stack to mitigate future quantum threats. Phase 1 uses PQXDH, a hybrid handshake combining X25519 with the KEM CRYSTALS-Kyber, to block harvest now, decrypt later attacks. Phase 2 adds SPQR, which runs alongside the Double Ratchet to form a hybrid Triple Ratchet, preserving forward secrecy and post-compromise security while handling larger key sizes, asynchrony, and message loss.

Preparing for AI, Quantum and Other Emerging Risks

🔐 Cybersecurity must evolve to meet rapid advances in agentic AI, quantum computing, low-code platforms and proliferating IoT endpoints. The author argues organizations should move from static defenses to adaptive, platform-based security that uses automation, continuous monitoring and AI-native protection to match attackers' speed. He urges early planning for post-quantum cryptography and closer collaboration with partners so security enables — rather than hinders — innovation.

CISOs Urged to Accelerate Post-Quantum Cryptography Plans

🔐 Enterprises acknowledge that quantum computing threatens current public-key cryptography, yet progress toward post-quantum cryptography (PQC) is uneven and slow. A PwC report finds fewer than 10% prioritize PQC in budgets, only 3% have fully implemented leading measures, 29% are piloting, and 49% have not started. Financial services, government, telecom and cloud are moving faster, while manufacturing, healthcare and industrial sectors lag due to legacy systems, skills shortages, and standards uncertainty. Experts advise inventories, pilot programs, crypto agility, and investment before the 2030 deprecation deadline to avoid 'harvest now, decrypt later' risks.

Quantum Readiness: Why Incident Response Won't Work

🔐 The arrival of cryptographically relevant quantum computers will create a "silent boom" where adversaries can capture encrypted traffic today and decrypt it later, making intrusions neither observed nor observable. This undermines traditional incident response and shifts responsibility to engineering teams, not a vendor checkbox. Organizations must pursue quantum readiness by engaging developers to inventory algorithms and data, assess internet-facing assets for PQC support, and build testing capability for new ciphers within their release cycles.

Google Cloud KMS Adds Quantum-Safe Key Encapsulation

🔐 Google Cloud Key Management Service (Cloud KMS) now offers preview support for post-quantum Key Encapsulation Mechanisms (KEMs), enabling customers to begin migrating to quantum-resistant key exchange. Cloud KMS supports ML-KEM-768, ML-KEM-1024, and the hybrid X-Wing (X25519+ML-KEM-768) option. The preview aims to mitigate "Harvest Now, Decrypt Later" risks and provide HPKE-compatible integrations via Tink and BoringCrypto. Developers are advised to adopt hybrid deployments and plan for larger key and ciphertext sizes that affect bandwidth and storage.

Signal Adds SPQR Triple Ratchet to Harden Against Quantum

🔐 Signal announced the rollout of SPQR (Sparse Post‑Quantum Ratchet), a new cryptographic component that augments its existing double ratchet to form a Triple Ratchet. SPQR integrates post‑quantum Key‑Encapsulation Mechanisms (ML‑KEM, including CRYSTALS‑Kyber) with efficient chunking and erasure coding to limit bandwidth. The design was co-developed with PQShield, AIST, and NYU, formally verified, and will be gradually enabled; users only need to keep clients updated.

Quantum-Safe Cybersecurity: Current Capabilities and Roadmap

🔐Quantum computing is moving from theoretical possibility to an actionable concern for cybersecurity professionals. The article highlights the immediate risk of "harvest now, decrypt later," where adversaries capture encrypted traffic today to decrypt it when quantum-capable machines arrive. It notes that in 2024 NIST finalized initial post-quantum standards, including FIPS 203 for ML-KEM key establishment, and emphasizes the need for organizations to begin migration planning. The piece outlines current quantum-safe tools, migration challenges, and practical steps to improve readiness.

Automatic SSL/TLS: Upgrading 6M Domains for Quantum Safety

🔐 Cloudflare's Automatic SSL/TLS now upgrades origin-facing encryption by default, having strengthened over 6 million domains without operator intervention. The system scans origins, verifies content and certificates, then gradually ramps stronger SSL/TLS modes from 1% to 100% of traffic, aborting safely on failures. This prepares sites for the post-quantum era by favoring hybrid key agreements (X25519 + ML-KEM) and will soon automate post-quantum handshakes and ad-hoc rescans.

Cloudflare WARP Adds Post-Quantum Key Agreement Support

🔐 Cloudflare's WARP client now supports post-quantum key agreement across both consumer (1.1.1.1) and enterprise (Cloudflare One Agent) offerings, tunneling traffic over MASQUE with hybrid post-quantum/classical ciphersuites. The upgrade provides immediate protection against harvest-now-decrypt-later attacks by wrapping user traffic in post-quantum MASQUE tunnels even when individual connections inside the tunnel are not yet PQ-protected. Cloudflare staged the rollout with temporary downgrades, phased population enablement, and an MDM override to balance robustness and downgrade-resistance while meeting FIPS/FedRAMP constraints.

Security Implications of Quantum Computing for CISOs

🔐 Quantum computing poses a long-term threat to public-key cryptography, with the potential to break RSA, ECC and Diffie-Hellman once scalable quantum machines exist. Although practical attacks on RSA-2048 are commonly estimated to be eight to fifteen years away, organizations with long-lived confidential data must act now. CISOs should begin a crypto-agility assessment, engage vendors about post-quantum cryptography, and brief leadership and boards to build a migration roadmap.

You Don’t Need Quantum Hardware for PQC Readiness Now

🔐 Cloudflare explains that post-quantum cryptography (PQC) protects communications against future quantum computers and does not require specialized quantum hardware. PQC runs today on existing phones, servers, and network infrastructure, can scale at Internet level, and in many cases matches or exceeds classical performance. The post argues that quantum technologies like QKD and QRNG are interesting scientific tools but are neither necessary nor sufficient for broad post-quantum security; organizations should prioritize cryptographic agility and migration to PQC.

Amazon CloudFront Adds Post-Quantum and TLS1.3 Policy

🔐 Amazon CloudFront now supports hybrid post-quantum key establishment across all existing TLS security policies for client-to-edge connections, enabling quantum-resistant key exchange without customer configuration. CloudFront also introduces a new TLS1.3_2025 policy that enforces TLS 1.3 only. Both features are enabled by default at all edge locations and incur no additional charges. These updates help organizations strengthen long-term in-transit protection and simplify compliance planning.