C
Post-quantum TLS readiness
planalto.gov.br
Needs an upgrade: no TLS 1.3
Short answer
No. As of 2026-11-09, planalto.gov.br does not negotiate post-quantum key exchange; it uses secp384r1 over TLSv1.2 (Quantum Aether grade C), so recorded traffic is exposed to harvest-now-decrypt-later.
| Grade | C |
|---|---|
| Key exchange | secp384r1 |
| Post-quantum | no (classical) |
| TLS | TLSv1.2 |
| Hosting network | PRESIDENCIA DA REPUBLICA |
| Tranco rank | #5675 |
| Country | 🇧🇷 Brazil: #5/24 (62.6%) |
From our weekly tracker of the top 10,000 sites, scanned on 2026-11-09 · /adoption
Weekly history
| Week | Grade | Key exchange | Post-quantum |
|---|---|---|---|
| 2026-W46 | C | secp384r1 | no |
| 2026-W45 | C | secp384r1 | no |
Show your readiness on your site
Markdown
[](https://ather-quantum.com/verify/planalto.gov.br)