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Paper 2012/558

Domain-Specific Pseudonymous Signatures for the German Identity Card

Jens Bender and Özgür Dagdelen and Marc Fischlin and Dennis Kügler

Abstract

The restricted identification protocol for the new German identity card basically provides a method to use pseudonyms such that they can be linked by individual service providers, but not across different service providers (even not malicious ones). The protocol can be augmented to allow also for signatures under the pseudonyms. In this paper, we thus view---and define---this idea more abstractly as a new cryptographic signature primitive with some form of anonymity, and use the term domain-specific pseudonymous signatures. We then analyze the restricted identification solutions in terms of the formal security requirements.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Published elsewhere. A preliminary version appears in: Information Security - 15th International Conference (ISC) 2012, Lecture Notes in Computer Science, Vol.7483, pp.104-119, Springer-Verlag, 2012.
Keywords
restricted identificationGerman ID cardsignatures
Contact author(s)
oezguer dagdelen @ cased de
History
2012-09-30: received
Short URL
https://ia.cr/2012/558
License
Creative Commons Attribution
CC BY
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