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Group signatures allow members of a group to anonymously produce signatures on behalf of the group. They are an important building block for privacy-enhancing applications, e.g., enabling user data to...
Non-Interactive Plaintext (In-)Equality Proofs and Group Signatures with Verifiable Controllable Linkability
group signatures verifiable controllable linkability non-interactive plaintext (in-)equality proofs
2016/2/23
Group signatures are an important privacy-enhancing tool
that allow to anonymously sign messages on behalf of a group. A recent
feature for group signatures is controllable linkability, where a dedi...
Group signatures, which allow users of a group to anonymously produce signatures on
behalf of the group, are an important cryptographic primitive for privacy-enhancing applications.
Over the years, ...
On Linkability and Malleability in Self-blindable Credentials
anonymous credentials self-blindable credentials elliptic curve cryptosystem
2015/12/23
Self-blindable credential schemes allow users to anonymously prove ownership
of credentials. This is achieved by randomizing the credential before each showing in such
a way that it still remains va...
Anonymous attestation with user-controlled linkability
DAA group signatures security models
2012/6/14
This paper is motivated by the observation that existing security models for Direct Anonymous Attestation (DAA) have problems to the extent that insecure protocols may be deemed secure when analysed u...
Anonymous attestation with user-controlled linkability
foundations / Entropy Assessment Key Generation
2012/3/20
This paper is motivated by the observation that existing security models for Direct Anonymous Attestation (DAA) have problems to the extent that insecure protocols may be deemed secure when analysed u...
Linkability of Blind Signature Schemes over Braid Groups
Linkability Blind Signature Schemes Braid Groups
2009/6/12
Blindness and unforgeability are two essential security
requirements of a secure blind signature scheme.
Blindness means that after interacting with various
users, the signer can never be able to l...