{
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  "type": "rich",
  "title": "Post-Quantum Payments Infrastructure: Why Banks May Replace Rather Than Retrofit Legacy Rails",
  "author_name": "Sebastien Rousseau",
  "author_url": "https://sebastienrousseau.com/about/",
  "provider_name": "Sebastien Rousseau",
  "provider_url": "https://sebastienrousseau.com/",
  "thumbnail_url": "https://cloudcdn.pro/stocks/images/lan-pham-4qG2qqXi3tY.webp",
  "thumbnail_width": 1200,
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  "html": "<blockquote class=\"oembed-card\"><p><a href=\"https://sebastienrousseau.com/2026-05-31-post-quantum-payments-infrastructure-replace-rather-than-retrofit-2026/\">Post-Quantum Payments Infrastructure: Why Banks May Replace Rather Than Retrofit Legacy Rails</a></p><p>Harvest-now-decrypt-later turns today's TLS-protected payment messages into tomorrow's decrypted exposure. ML-KEM and ML-DSA are an order of magnitude larger than the RSA and ECC keys legacy rails were sized for — retrofit triggers fragmentation, latency, and HSM exhaustion. The 2026 architectural decision is whether to patch or replace before the regulatory clock runs out.</p><p><cite>Sebastien Rousseau — sebastienrousseau.com</cite></p></blockquote>",
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