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Certificate authorities, the DNS root's operator, and firmware signers generate keys under quorum, script, and witness. ML-DSA keys fit that pattern. LMS and XMSS keys cannot be backed up the classical way, since reusing a one-time key allows forgery.
The US, China, and the EU now use export controls, investment rules, equity stakes, and their own standards to secure quantum technology. The EU has also drafted procurement preferences. Because quantum companies buy abroad, governments keep exemptions for partners.
Security agencies in the US, UK, France, Germany, the Netherlands, Sweden, Australia, and Canada say QKD cannot replace public-key cryptography in government systems. Programs in the EU, Germany, Canada, China, Japan, Singapore, and India pay for QKD anyway.
Commerce holds stakes in five companies through its CHIPS quantum awards and releases award money as they meet milestones. DOE and DARPA pay for demonstrated or verified progress. The government is now an owner as well as a funder.
QKD is provably secure only if its devices behave as modeled and its classical channel is already authenticated. NSA, the NCSC, and four European agencies allow it a niche role at most, citing implementation attacks, trusted relays, and cost.
About $200 million is new funding tied to the final stage of DARPA's Quantum Benchmarking Initiative. The rest is a proposed loan to PsiQuantum that the company said is conditional and not guaranteed.
The four join Microsoft and PsiQuantum in Stage C, where government evaluators test whether a proposed utility-scale machine can be built as designed. Of the four, only Diraq disclosed its initial funding, $51 million for the next year.
NSA kept the five limitations it listed in 2020 and added an argument that QKD security established at certification can degrade. It dropped a line saying it did not expect to certify or approve QKD products.
Allies approved NATO's first quantum technology roadmap on July 30. In its public summary, NATO dated activities through 2029, from sea trials of quantum navigation sensors to an Alliance quantum standards roadmap.
Rydberg-atom receivers sense radio waves with laser-probed atoms in a centimeter-scale glass cell and tune from about 100 kilohertz to terahertz frequencies. In published comparisons, conventional receivers still detect weaker signals in most bands.
