[WIP] Add key rotation mechanism on the OHTTP gateway #68
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What ?
This PR introduces the ability to rotate the public/private key pair of the gateway after a defined cryptoperiod. As a result, older HPKE configurations will expire, and new ones will be generated to ensure continued secure communication.
Why ?
Regular key rotation enhances the overall security of the system by reducing the risk of key compromise and ensuring cryptographic best practices.
Issue related: #11