Attribute-Based Signatures with Controllable Linkability

Urquidi, Miguel; Khader, Dalia; Lancrenon, Jean; Chen, Liqun

doi:10.1007/978-3-319-31550-8_8

Cited by 8 publications

(6 citation statements)

References 19 publications

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“…Some group signature schemes allow revocability [27,55]. On the other hand, again, the use of keys in those schemes cannot be easily bounded by a fixed value n. Attribute based signature (ABS) schemes [7,19,24,26,32,49,56,67] are non-interactive signature solutions for anonymous attribute policy proving. They provide binary attribute policy authentication (including Boolean relations).…”

Section: Related Workmentioning

confidence: 99%

“…The anonymous decentralized e-cash schemes [51,60] cannot be directly applied for the e-donation purpose, as they do not provide a mechanism for anonymous attribute-based money transfer between donors and recipients who are non-privy to each other. Also, it is non-trivial to directly combine these with the existing anonymous attribute proving techniques (e.g., anonymous credentials [14,15,17,18,23,31,48]), attribute based signatures [19,26,32,49,56,67], group signatures [5,16,27,35,55,62,71]), while satisfying the above-mentioned requirements. We note that even letting ICOs use anonymous cryptocurrencies (e.g., Zerocash [60]) does not help with all of our e-donation requirements.…”

Section: Introductionmentioning

confidence: 99%

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Anonymous, Attribute Based, Decentralized, Secure, and Fair e-Donation

Biçer

Küpçü

2020

Proceedings on Privacy Enhancing Technologies

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E-cash and cryptocurrency schemes have been a focus of applied cryptography for a long time. However, we acknowledge the continuing need for a cryptographic protocol that provides global scale, decentralized, secure, and fair delivery of donations. Such a protocol would replace central trusted entities (e.g., charity organizations) and guarantee the privacy of the involved parties (i.e., donors and recipients of the donations). In this work, we target this online donation problem and propose a practical solution for it. First, we propose a novel decentralized e-donation framework, along with its operational components and security definitions. Our framework relies on a public ledger that can be realized via a distributed blockchain. Second, we instantiate our e-donation framework with a practical scheme employing privacy-preserving cryptocurrencies and attributebased signatures. Third, we provide implementation results showing that our operations have feasible computation and communication costs. Finally, we prove the security of our e-donation scheme via formal reductions to the security of the underlying primitives.

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Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anonymous, Attribute Based, Decentralized, Secure, and Fair e-Donation

Biçer

Küpçü

2020

Proceedings on Privacy Enhancing Technologies

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“…Like [2], attribute-based primitives [8,9,10] have been extended to achieve controlled linkability relying on pseudonyms. While of interest, they do not support the modification of the attributes' values, the user is only allowed to present attributes as they were initially certified by the issuing entity.…”

Section: Introductionmentioning

confidence: 99%

PIMA: A Privacy-preserving Identity management system based on an unlinkable MAlleable signature

Masmoudi

Laurent²,

Kaaniche³

2022

Journal of Network and Computer Applications

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“…Practical features such as decentralization [30], user-controlled linkability [15], traceability [17,16,21], and controllable-linkability [35] have been added to ABS schemes resulting in various ABS notions.…”

Section: Introductionmentioning

confidence: 99%

“…Note that unlike in DAA, where the signature attests to the fact that the user belongs to a particular group, and thanks to the expressiveness of the policies with which signatures in ABS schemes are associated, ABS-UCL allows the user to attest to much broader statements than merely proving she belongs to a particular group. Also note that ABS-UCL is very different from the notion of Attribute-Based Signatures with Controllable Linkability [35] in which a designated authority (equipped with a secret key) is able to check if two signatures originated from the same signer.…”

Section: Introductionmentioning

confidence: 99%

Attribute-Based Signatures with User-Controlled Linkability Without Random Oracles

Kaafarani

Ghadafi

2017

Lecture Notes in Computer Science

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Attribute-Based Signatures (ABS) are a versatile cryptographic primitive and have many applications. They are a generalization of many widely-used signature-related notions such as group, ring and mesh signatures. Attribute-Based Signatures with User-Controlled Linkability (ABS-UCL) combine properties of ABS and Direct Anonymous Attestation (DAA) thus allowing a user to anonymously and at will maintain a session with a verifier. Such a notion also has many applications. In this work, we provide the first constructions of ABS-UCL dispensing with heuristic assumptions such as random oracles. We start by providing a generic construction which avoids some of the inefficiency pitfalls of existing constructions. We then provide efficient instantiations supporting expressive signing policies. We also give a concrete construction for threshold policies yielding constant-size signatures. Some of the building blocks we construct might be of independent interest.

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Attribute-Based Signatures with Controllable Linkability

Cited by 8 publications

References 19 publications

Anonymous, Attribute Based, Decentralized, Secure, and Fair e-Donation

Anonymous, Attribute Based, Decentralized, Secure, and Fair e-Donation

PIMA: A Privacy-preserving Identity management system based on an unlinkable MAlleable signature

Attribute-Based Signatures with User-Controlled Linkability Without Random Oracles

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