Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures

Johannes Blömer; Jan Bobolz

doi:10.1007/978-3-319-93387-0_12

Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures

Johannes Blömer, Jan Bobolz

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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.

Original language	English
Title of host publication	Applied Cryptography and Network Security
Subtitle of host publication	16th International Conference, ACNS 2018, Leuven, Belgium, July 2-4, 2018, Proceedings
Editors	Bart Preneel, Frederik Vercauteren
Publisher	Springer
Chapter	12
Pages	221-239
Volume	10892
Edition	1
ISBN (Electronic)	9783319933870
ISBN (Print)	9783319933863
DOIs	https://doi.org/10.1007/978-3-319-93387-0_12
Publication status	Published - 10 Jun 2018
Event	The 16th International Conference on Applied Cryptography and Network Security - Leuven, Belgium Duration: 2 Jul 2018 → 4 Jul 2018 https://www.cosic.esat.kuleuven.be/events/acns2018/

Publication series

Name	Lecture Notes in Computer Science
Publisher	Springer
Volume	10892
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Conference

Conference	The 16th International Conference on Applied Cryptography and Network Security
Abbreviated title	ACNS 2018
Country/Territory	Belgium
City	Leuven
Period	2/07/18 → 4/07/18
Internet address	https://www.cosic.esat.kuleuven.be/events/acns2018/

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10.1007/978-3-319-93387-0_12Licence: All Rights Reserved

http://link.springer.com/10.1007/978-3-319-93387-0_12Licence: All Rights Reserved

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Blömer, J., & Bobolz, J. (2018). Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures. In B. Preneel, & F. Vercauteren (Eds.), Applied Cryptography and Network Security: 16th International Conference, ACNS 2018, Leuven, Belgium, July 2-4, 2018, Proceedings (1 ed., Vol. 10892, pp. 221-239). (Lecture Notes in Computer Science; Vol. 10892). Springer. https://doi.org/10.1007/978-3-319-93387-0_12

Blömer, Johannes ; Bobolz, Jan. / Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures. Applied Cryptography and Network Security: 16th International Conference, ACNS 2018, Leuven, Belgium, July 2-4, 2018, Proceedings. editor / Bart Preneel ; Frederik Vercauteren. Vol. 10892 1. ed. Springer, 2018. pp. 221-239 (Lecture Notes in Computer Science).

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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.",

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booktitle = "Applied Cryptography and Network Security",

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Blömer, J & Bobolz, J 2018, Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures. in B Preneel & F Vercauteren (eds), Applied Cryptography and Network Security: 16th International Conference, ACNS 2018, Leuven, Belgium, July 2-4, 2018, Proceedings. 1 edn, vol. 10892, Lecture Notes in Computer Science, vol. 10892, Springer, pp. 221-239, The 16th International Conference on Applied Cryptography and Network Security, Leuven, Belgium, 2/07/18. https://doi.org/10.1007/978-3-319-93387-0_12

Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures. / Blömer, Johannes; Bobolz, Jan.
Applied Cryptography and Network Security: 16th International Conference, ACNS 2018, Leuven, Belgium, July 2-4, 2018, Proceedings. ed. / Bart Preneel; Frederik Vercauteren. Vol. 10892 1. ed. Springer, 2018. p. 221-239 (Lecture Notes in Computer Science; Vol. 10892).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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N2 - 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.

AB - 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.

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Blömer J, Bobolz J. Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures. In Preneel B, Vercauteren F, editors, Applied Cryptography and Network Security: 16th International Conference, ACNS 2018, Leuven, Belgium, July 2-4, 2018, Proceedings. 1 ed. Vol. 10892. Springer. 2018. p. 221-239. (Lecture Notes in Computer Science). doi: 10.1007/978-3-319-93387-0_12

Delegatable Attribute-Based Anonymous Credentials from Dynamically Malleable Signatures

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