A comprehensive analysis of ETSI technical committee standards (TC ESI) defining the transition timeline for European Qualified Trust Services.
The European Telecommunications Standards Institute (ETSI) establishes cryptographic algorithm recommendations for trust services in ETSI TS 119 312. We examine the latest ETSI transition guidelines mandating the introduction of composite and pure post-quantum algorithms into Qualified Certificates, Timestamping Authorities, and OCSP responders.
During the multi-year transition, European trust services cannot abruptly break compatibility with legacy PDF readers and operating systems. We detail the deployment of composite dual-signature X.509 certificates (combining ECDSA with ML-DSA) compliant with ITU-T X.509 and IETF LAMPS specifications.
Step-by-step regulatory guidance for QTSPs updating their Certification Practice Statements (CPS) and notifying national supervisory bodies (such as BSI in Germany or ANSSI in France) during post-quantum algorithm onboarding.