Attributed metadata history
Up to 100 retained publisher events per page for b539e6411331215d05dd422ce80a0f57a7ed9609eceff2d910c04d9e6e950c89. Withdrawals and unavailable references remain attributed to their publishers.
intelligence_src_e53adb99e40ae66258
observed · 2026-10-12 16:25:04 UTC
ePrint Report: Hide Now, Trace Later: Retrospective Attribution in Issuer-Hiding Credentials Stephan Krenn, Doryan Lesaignoux, Omid Mir, Gabriele Spini Attribute-based credentials (ABCs) enable privacy-preserving authentication by allowing users to prove statements about certified attributes without revealing unnecessary information. However, while ABCs hide undisclosed attributes, the credential verification process inherently reveals the issuer's identity, which can leak contextual information such as a user's nationality or residency. Issuer-hiding ABCs address this by concealing the issuer during verification, but introduce a critical accountability problem: if an issuer is compromised or acts maliciously, previously accepted presentations originating from that issuer cannot be singled out without significant privacy violation and high burden on the central authority performing the inspection. We propose an issuer-inspection mechanism that enables retrospective attribution while preserving privacy. An inspection authority can release keys allowing verifiers to locally identify presentations originatin
Fingerprint: c7fe8ae77fefc4f93a0c21ac9feb36b5366858d5490fd774292c491751d2a5e5
intelligence_src_e53adb99e40ae66258
observed · 2026-10-12 16:25:03 UTC
available
Fingerprint: 366cb966e32414edc1db353849a1ee8d6b8462b83786e04001881ba6594765ad