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add ecdh curves to gateway server TLS settings#3700

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ramaraochavali:fix/ecdh_curves
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add ecdh curves to gateway server TLS settings#3700
ramaraochavali wants to merge 1 commit into
istio:masterfrom
ramaraochavali:fix/ecdh_curves

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@ramaraochavali

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Signed-off-by: Rama Chavali <rama.rao@salesforce.com>
@ramaraochavali ramaraochavali requested a review from a team as a code owner May 3, 2026 08:53
@ramaraochavali ramaraochavali added the release-notes-none Indicates a PR that does not require release notes. label May 3, 2026
@istio-testing istio-testing added the size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. label May 3, 2026
@ramaraochavali

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@istio/technical-oversight-committee can you PTAL?

// Optional: If specified, only support the specified ecdh curves.
// Otherwise default to the default ecdh list supported by Envoy
// as specified [here](https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/transport_sockets/tls/v3/common.proto).
repeated string ecdh_curves = 17;

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Curious what will happen if the proxy does not support these curves

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The config is rejected at run time - same as cipher suites

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