Support for responding to key updates

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 98.59944% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 95.08%. Comparing base (a4a1f45) to head (2960934).

Files	Patch %	Lines
src/tls/tls.rs	95.83%	5 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #244 +/- ## =========================================== + Coverage 95.07% 95.08% +0.01% =========================================== Files 48 48 Lines 32439 32752 +313 =========================================== + Hits 30841 31142 +301 - Misses 1598 1610 +12 ```

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