The current plan is to add native support for PQC algorithms into the core Canton Network services (Support Validator, Validator) and protocol through using the extensible cryptographic API that is already in place. One option is ML-DSA but the team is considering other options, including hybrid schemes. This would upgrade the existing Global Synchronizer for full PQC defense against quantum attacks.
There are details that still need to be worked out but the architecture of Canton abstracts a lot of the cryptographic details from the smart contract execution layer. I expect that more details would appear in early H2 2026. We don’t think this is a significant uplift but further analysis of dependencies (libraries, HSM/KMS, etc) is still ongoing. This will need coordination with many entities across the ecosystem, especially wallet providers, to fully support.