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[Security] Make s2a default to pqc key exchange group#12894

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ejona86 merged 1 commit into
grpc:masterfrom
gtcooke94:s2a_pqc_defaults
Jul 8, 2026
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[Security] Make s2a default to pqc key exchange group#12894
ejona86 merged 1 commit into
grpc:masterfrom
gtcooke94:s2a_pqc_defaults

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@gtcooke94

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Make S2A default to using X25519MLKEM768.

Add an integration test with a server that only allows X25519MLKEM768 to ensure that it can be negotiated.

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So this is mostly a noop, but if someone is still using Netty 4.1, then it would have an effect.

@ejona86 ejona86 merged commit bc01994 into grpc:master Jul 8, 2026
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3 participants