---
_id: '2379'
abstract:
- lang: eng
  text: '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. '
author:
- first_name: Johannes
  full_name: Blömer, Johannes
  id: '23'
  last_name: Blömer
- first_name: Jan
  full_name: Bobolz, Jan
  id: '27207'
  last_name: Bobolz
citation:
  ama: 'Blömer J, Bobolz J. Delegatable Attribute-based Anonymous Credentials from
    Dynamically Malleable Signatures. In: <i>ACNS 2018 Applied Cryptography &#38;
    Network Security</i>. LNCS. doi:<a href="https://doi.org/10.1007/978-3-319-93387-0_12">10.1007/978-3-319-93387-0_12</a>'
  apa: Blömer, J., &#38; Bobolz, J. (n.d.). Delegatable Attribute-based Anonymous
    Credentials from Dynamically Malleable Signatures. <i>ACNS 2018 Applied Cryptography
    &#38; Network Security</i>. The 16th International Conference on Applied Cryptography
    and Network Security, Leuven, Belgium. <a href="https://doi.org/10.1007/978-3-319-93387-0_12">https://doi.org/10.1007/978-3-319-93387-0_12</a>
  bibtex: '@inproceedings{Blömer_Bobolz, series={LNCS}, title={Delegatable Attribute-based
    Anonymous Credentials from Dynamically Malleable Signatures}, DOI={<a href="https://doi.org/10.1007/978-3-319-93387-0_12">10.1007/978-3-319-93387-0_12</a>},
    booktitle={ACNS 2018 Applied Cryptography &#38; Network security}, author={Blömer,
    Johannes and Bobolz, Jan}, collection={LNCS} }'
  chicago: Blömer, Johannes, and Jan Bobolz. “Delegatable Attribute-Based Anonymous
    Credentials from Dynamically Malleable Signatures.” In <i>ACNS 2018 Applied Cryptography
    &#38; Network Security</i>. LNCS, n.d. <a href="https://doi.org/10.1007/978-3-319-93387-0_12">https://doi.org/10.1007/978-3-319-93387-0_12</a>.
  ieee: 'J. Blömer and J. Bobolz, “Delegatable Attribute-based Anonymous Credentials
    from Dynamically Malleable Signatures,” presented at the The 16th International
    Conference on Applied Cryptography and Network Security, Leuven, Belgium, doi:
    <a href="https://doi.org/10.1007/978-3-319-93387-0_12">10.1007/978-3-319-93387-0_12</a>.'
  mla: Blömer, Johannes, and Jan Bobolz. “Delegatable Attribute-Based Anonymous Credentials
    from Dynamically Malleable Signatures.” <i>ACNS 2018 Applied Cryptography &#38;
    Network Security</i>, doi:<a href="https://doi.org/10.1007/978-3-319-93387-0_12">10.1007/978-3-319-93387-0_12</a>.
  short: 'J. Blömer, J. Bobolz, in: ACNS 2018 Applied Cryptography &#38; Network Security,
    n.d.'
conference:
  location: Leuven, Belgium
  name: The 16th International Conference on Applied Cryptography and Network Security
date_created: 2018-04-17T12:28:25Z
date_updated: 2023-01-10T10:28:43Z
ddc:
- '004'
department:
- _id: '7'
- _id: '64'
doi: 10.1007/978-3-319-93387-0_12
file:
- access_level: closed
  content_type: application/pdf
  creator: ups
  date_created: 2018-11-02T13:41:16Z
  date_updated: 2018-11-02T13:41:16Z
  file_id: '5252'
  file_name: 2018-340.pdf
  file_size: 542171
  relation: main_file
  success: 1
file_date_updated: 2018-11-02T13:41:16Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://eprint.iacr.org/2018/340
oa: '1'
project:
- _id: '4'
  name: SFB 901 - Project Area C
- _id: '1'
  name: SFB 901
- _id: '13'
  name: SFB 901 - Subproject C1
publication: ACNS 2018 Applied Cryptography & Network security
publication_status: accepted
series_title: LNCS
status: public
title: Delegatable Attribute-based Anonymous Credentials from Dynamically Malleable
  Signatures
type: conference
user_id: '25078'
year: '2018'
...