Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures

J. Blömer, J. Bobolz, in: ACNS 2018 Applied Cryptography & Network Security, n.d.

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Conference Paper | Accepted | English
Abstract
In this paper, we introduce the notion of delegatable attribute-based anonymous credentials (DAAC). Such systems offer fine-grained anonymous access control and they give the credential holder the ability to issue more restricted credentials to other users. In our model, credentials are parameterized with attributes that (1) express what the credential holder himself has been certified and (2) define which attributes he may issue to others. Furthermore, we present a practical construction of DAAC. For this construction, we deviate from the usual approach of embedding a certificate chain in the credential. Instead, we introduce a novel approach for which we identify a new primitive we call dynamically malleable signatures (DMS) as the main ingredient. This primitive may be of independent interest. We also give a first instantiation of DMS with efficient protocols.
Publishing Year
Proceedings Title
ACNS 2018 Applied Cryptography & Network security
Conference
The 16th International Conference on Applied Cryptography and Network Security
Conference Location
Leuven, Belgium
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Blömer J, Bobolz J. Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures. In: ACNS 2018 Applied Cryptography & Network Security. LNCS.
Blömer, J., & Bobolz, J. (n.d.). Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures. In ACNS 2018 Applied Cryptography & Network security. Leuven, Belgium.
@inproceedings{Blömer_Bobolz, series={LNCS}, title={Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures}, booktitle={ACNS 2018 Applied Cryptography & Network security}, author={Blömer, Johannes and Bobolz, Jan}, collection={LNCS} }
Blömer, Johannes, and Jan Bobolz. “Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures.” In ACNS 2018 Applied Cryptography & Network Security. LNCS, n.d.
J. Blömer and J. Bobolz, “Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable Signatures,” in ACNS 2018 Applied Cryptography & Network security, Leuven, Belgium.
Blömer, Johannes, and Jan Bobolz. “Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures.” ACNS 2018 Applied Cryptography & Network Security.
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