Lattice-based Threshold Signature with Message Block Sharing

Message Block Sharing and Its Application: Lattice-based Threshold Signature Scheme

On the design and security of a lattice-based threshold secret sharing scheme

In this paper, we introduce a method of threshold secret sharing scheme (TSSS) in which secret reconstruction is based on Babai's nearest plane algorithm. In order to supply secure public channels for transmitting shares to parties, we need to ensure that there are no quantum threats to these channels. A solution to this problem can be utilization of lattice-based cryptosystems for these channe...

Post-Quantum Attribute-Based Signatures from Lattice Assumptions

Attribute based signature schemes (ABS) constitute important and powerful primitives when it comes to protecting the privacy of the user’s identity and signing information. More specifically, ABS schemes provide the advantage of anonymously signing a message once a given policy is satisfied. As opposed to other related privacy preserving signatures, the verifier is not able to deduce from the s...

A General Threshold Signature and Authenticated Encryption Scheme Based on ElGamal System

Based on ElGamal system, a group-oriented threshold signature and authenticated encryption scheme was put forward. After being signed by a signer group employing ) , ( n t threshold signature scheme, the message m was transmitted to a particular verifier group, and then the signature was verified through the cooperation of k ones from the verifier group with l members. Similarly, a general auth...

Certificateless threshold signature scheme from bilinear maps

A (t,n) threshold signature scheme allows t or more group members to generate signatures on behalf of a group with nmembers. In contrast to the traditional public key cryptography based on public key infrastructure (PKI) and identity-based public key cryptography (IDPKC), certificateless public key cryptography (CL-PKC) offers useful properties as it does not require any certificates to ensure ...