
10/30/2025 · Lena Heimberger, Christopher Patton
What this post added
This post explores the application of post-quantum cryptography to Anonymous Credentials (ACs), a privacy-preserving mechanism for proving specific facts without over-sharing information. It discusses the challenges of migrating classical AC primitives to PQ alternatives, the requirements for PQ ACs (including blind signatures, state management, nullifiers, and public attributes), and the current landscape of classical and emerging PQ AC research, including efforts at the IETF and potential use cases like private rate-limiting for AI agents.