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Diagram Anchor Check: FailedFound 11 broken anchor(s) that will cause docs build failures.
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sanchit-CRL
reviewed
Apr 21, 2026
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| CockroachDB supports the following key exchange mechanisms for TLS 1.3 connections: | ||
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| - `X25519MLKEM768` (default): A hybrid PQC algorithm that combines `X25519` (an elliptic curve Diffie-Hellman algorithm) and `ML-KEM-768` (a quantum-resistant key encapsulation mechanism standardized as [FIPS 203](https://csrc.nist.gov/pubs/fips/203/final)). |
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These are the default PQC algorithms supported for TLS 1.3 X25519MLKEM768, X25519, CurveP256, CurveP384, CurveP521 as per the following link
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| ### Encryption | ||
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| To maximize security against quantum attackers, Cockroach Labs recommends that all data in-flight is sent via a TLS 1.3 connection and encrypted with AES-256. This includes the encryption of any [client connections](#tls-in-cockroachdb-sql-client-connections) as well as [data transferred between CockroachDB nodes](#tls-between-cockroachdb-nodes). |
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all data in-flight is sent via a TLS 1.3 connection is correct, however AES-256 is recommended to be used for data at rest and not data in flight
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DOC-16026