Download Attribute-based Credentials for Trust: Identity in the by Kai Rannenberg, Jan Camenisch, Ahmad Sabouri PDF

By Kai Rannenberg, Jan Camenisch, Ahmad Sabouri

The want for info privateness and protection keeps to develop and will get more and more well-known. during this regard, Privacy-preserving Attribute-based Credentials (Privacy-ABCs) are dependent recommendations to supply safe but privacy-respecting entry regulate. This e-book addresses the federation and interchangeability of Privacy-ABC applied sciences. It defines a typical, unified structure for Privacy-ABC structures that permits their respective gains to be in comparison and mixed additional, this ebook offers open reference implementations of chosen Privacy-ABC platforms and explains find out how to installation them in genuine construction pilots, permitting provably authorised participants of limited groups to supply nameless suggestions on their group or its participants. thus far, credentials reminiscent of digitally signed items of non-public details or different details used to authenticate or determine a consumer haven't been designed to recognize the clients’ privateness. They unavoidably display the id of the holder even supposing the applying to hand usually wishes less details, e.g. in simple terms the affirmation that the holder is or is eligible for social merits. by contrast, Privacy-ABCs permit their holders to bare simply their minimum info required by means of the functions, with no freely giving their complete identification details. Privacy-ABCs therefore facilitate the implementation of a reliable and even as privacy-respecting electronic society.

The ABC4Trust venture as a multidisciplinary and ecu venture, provides a technological reaction to questions associated with facts protection.

Viviane Reding
(Former Vice-president of the eu fee, Member of ecu Parliament)

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Extra resources for Attribute-based Credentials for Trust: Identity in the Information Society

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5 Inspection Absolute user anonymity in online services can easily lead to abuses such as spam, harassment, or fraud. Privacy-ABCs give verifiers the option to strike a trade-off between anonymity for honest users and accountability for misbehaving users through a feature called inspection. , in case of abuse. The inspector must on one hand be trusted by the user not to uncover identities unnecessarily, and must on the other hand be trusted by the verifier to assist in the recovery when an abuse does occur.

To this end, the issuance protocol is preceded by the generation and verification of an issuance token, which is generated on the basis of an issuance policy sent to the user. 6 – Step 3). The issuance policy must require the user to present at least one credential or one pseudonym, otherwise simple issuance is performed. The method returns an issuance message (containing the issuance policy) which must then be sent to the user. The user in turn invokes the method issuanceProtocolStep with the received message.

Issuer-driven revocation is typically used when credentials have been lost or compromised, or when the user is denied any further use of the credential. The revocation authority may be managed by or be the same entity as the issuer, or may be a separate entity. Issuer-driven revocation is performed through a revocation handle, a dedicated unique identifier that the issuer embeds as an attribute in each issued credential (but that should not be unnecessarily revealed in a presentation token). When the issuer, a verifier, or any third party 24 P.

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