Blind BBS Signatures — IRTF CFRG draft¶

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Last modified: 2026-10-27

URL: https://datatracker.ietf.org/doc/draft-irtf-cfrg-bbs-blind-signatures

Summary¶

Extension of the CFRG BBS draft that lets a holder commit to messages (e.g. a holder secret or attributes hidden from the issuer) and obtain a BBS signature over them without revealing them. This enables (partially) blind issuance and binding credentials to a holder secret. Cited in BL26-SoK-AnonCreds as one of the IETF specifications extending the BBS core scheme.