Quantum computing can bring benefits but also risks for our digitally connected world. Since quantum computers could break widely used cryptographic algorithms, quantum safe algorithms are being investigated and standardized as post quantum cryptography-(PQC).

Physical security documents as well as digital identity wallets with credentials need to support PQC. As part of the revision of the eIDAS Regulation 2.0, European Digital Identity Wallets (EUDI wallets) issued or certified by the EU member states will be available to all Europeans in the near future and guarantee a trustworthy and secure digital identity. PQC has not yet featured prominently in the specifications.

In this presentation, we give an overview of key components in a digital identity ecosystem that must be addressed to achieve quantum resistance. We focus on two critical processes: the issuer issues a digital credential to a user and the user presents a digital credential to a relying party.