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"Multimodal Private Signatures" by Khoa Nguyen, Fuchun Guo et al.

We introduce Multimodal Private Signature (MPS) - an anonymous signature system that offers a novel accountability feature: it allows a designated opening authority to learn some partial information op about the signer’s identity id, and nothing beyond. Such partial information can flexibly be defined as op= id (as in group signatures), or as op= 0 (like in ring signatures), or more generally, as op= Gj(id), where Gj(· ) is a certain disclosing function. Importantly, the value of op is known in advance by the signer, and hence, the latter can decide whether she/he wants to disclose that piece of information. The concept of MPS significantly generalizes the notion of tracing in traditional anonymity-oriented signature primitives, and can enable various new and appealing privacy-preserving applications. We formalize the definitions and security requirements for MPS. We next present a generic construction to demonstrate the feasibility of designing MPS in a modular manner and from comm ....

Multimodal Private Signature , Nonymous Authentications , Ine Grained Information Disclosure , Modular Constructions , New Models , Zero Knowledge ,

"Traceable policy-based signatures and instantiation from lattices" by Yanhong Xu, Reihaneh Safavi-Naini et al.

Policy-based signatures (PBS) were proposed by Bellare and Fuchsbauer (PKC 2014) to allow an authorized member of an organization to sign a message on behalf of the organization. The user's authorization is determined by a policy managed by the organization's trusted authority, while the signature preserves the privacy of the organization's policy. Signing keys in PBS do not include user identity information and thus can be passed to others, violating the intention of employing PBS to restrict users’ signing capability. In this work, we introduce the notion of traceability for PBS by including user identity in the signing key such that the trusted authority will be able to open a suspicious signature and recover the signer's identity should the needs arise. We provide rigorous definitions and stringent security notions of traceable PBS (TPBS), capturing the properties of PBS suggested by Bellare-Fuchsbauer and resembling the “full traceability” requirement for ....

Bellare Micciancio Warinschi Eurocrypt , Lattice Based Instantiations , Modular Constructions , Olicy Based Signatures , Zero Knowledge Proofs ,

Modular constructions, for refugees, aid from state reserves for Ukraine, Moldova

The National Emergency Management Committee (CNSU) adopted on Sunday a decision that proposes to take 18 light constructions form the state. ....

Republic Of Moldova , National Emergency Management Committee , Bucharest Municipality , Modular Constructions , State Reserves , The National Emergency Management Committee ,

CNSU approves allocation of 9 modular constructions for epidemiological triage centers in Olt, Timis

The National Committee for Emergency Situations (CNSU) approved, on Monday, by a decision, the removal from the state reserves of nine light. ....

Romania General , National Committee For Emergency Situations , National Committee , Emergency Situations , Slatina County Emergency Hospital , Caracal Municipal Hospital , Corabia City Hospital , Timis County , Clinical Hospital , Babes Clinical Hospital , Infectious Diseases , Shopping City , Epidemiological Triage Centers , Louis Turcanu Emergency Clinical Hospital , Modular Constructions , Holt County ,

Precast Construction Market SWOT Analysis by Key Players- Skanska, Komatsu, Bechtel

Precast Construction Market SWOT Analysis by Key Players- Skanska, Komatsu, Bechtel
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