feat: add backwards compatible hybrid PQ policies - #6044
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jouho
approved these changes
Aug 19, 2026
alexw91
approved these changes
Aug 20, 2026
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Goal
Create backwards compatible hybrid ML-KEM policies to support PQ upgrade
Why
Users on these policies need a path to migrate to PQ:
CloudFront-TLS-1-2-2021,20200207, and20230317.How
Replace
kem_preferences_nullin the base policies withkem_preferences_pq_tls_1_3_ietf_2025_07that supports 3 hybrid ML-KEM groups.Callouts
20200207supports only TLS 1.3 ciphers despiteminimum_protocol_versionbeingS2N_SSLv3, which I assume is for compatibility concerns. I added it to the exception list in the PQ policies test.Testing
Existing CI should pass.
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.