Global Agencies Split on Post-Quantum Cryptography Hybrid Approach, Leaving Developers Caught Between Rules
Major cybersecurity agencies including Germany's BSI, France's ANSSI, Australia's ASD, and the US NSA agree that post-quantum cryptographic migration is urgent but disagree sharply on how to execute it. BSI and ANSSI recommend hybrid schemes that pair classical algorithms with post-quantum ones as a safety net, citing the risk that newer algorithms could fail as Rainbow and SIKE did. Australia's ASD and the NSA's CNSA 2.0 framework argue against hybrids, warning that added complexity increases the likelihood of implementation or configuration failures. The conflict is not theoretical: a compliance scan shows that no single cryptographic configuration can simultaneously satisfy all five major regulatory frameworks. Organizations operating across multiple jurisdictions face a situation where any choice they make will be non-compliant with at least one authority.
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