In late March of 2026, Google announced a 2029 timeline for their post-quantum cryptography (PQC) migration. That announcement also mentions a change in priorities. PQC implementation work has largely been focused on key exchanges, which mitigates Harvest-Now-Decrypt-Later (HNDL) attacks. The goal has been to get ML-KEM used during session negotiations (ex. get TLS to use X25519MLKEM768). Google is now prioritizing PQC in authentication servi…
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