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draft-ietf-tls-ech-keylogfile-01

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SSLKEYLOGFILE Extension for Encrypted Client Hello (ECH) (Internet-Draft, 2024)

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SSLKEYLOGFILE Extension for Encrypted Client Hello (ECH)

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https://datatracker.ietf.org/doc/html/draft-ietf-tls-ech-keylogfile

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IETF Datatracker

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This document specifies an extension to the SSLKEYLOGFILE format to support the logging of information about Encrypted Client Hello (ECH) related secrets. Two new labels are introduced, namely ECH_SECRET and ECH_CONFIG, which log the Hybrid Public Key Encryption (HPKE)- derived shared secret and the ECHConfig used for the ECH, respectively. This extension aims to facilitate debugging of TLS connections employing ECH.

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