Anonymous Rate-Limited Credentials
Published in IETF CFRG, 2025
Recommended citation: C. Yun and C. A. Wood, "Anonymous Rate-Limited Credentials", Work in Progress, Internet-Draft, draft-yun-cfrg-arc, 05 February 2025,
Anonymous Rate-Limited Credentials (ARC) are a specialization of keyed-verification anonymous credentials with support for rate limiting. ARC credentials can be presented from client to server up to some fixed number of times, where each presentation is cryptographically bound to client secrets and application-specific public information, such that each presentation is unlinkable from the others as well as the original credential creation. ARC is useful in applications where a server needs to throttle or rate-limit access from anonymous clients.