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(Linkable) Ring Signature from Hash-Then-One-Way Signature
ring signature linkable ring signature lattice-based cryptography
2019/5/28
In this paper, we revisit the generic construction of ring signatures from hash-then-one-way type (Type−HType−H) signatures proposed by Abe et al. (AOS) in 2004 and made the following cont...
Generic Construction of Linkable Ring Signature
ring signature linkable ring signature generic construction
2019/4/11
We propose a generic construction of linkable ring signature from any compatible ring signature scheme and one-time signature scheme. Our construction has both theoretical and practical interest. In t...
A Traceable Ring Signature Scheme based on Coding Theory
cryptographic protocols digital signatures
2019/4/1
Traceable ring signatures are a variant of ring signatures which allows the identity of a user to be revealed, when it signs two different messages with respect to the same group of users. It has appl...
Raptor: A Practical Lattice-Based (Linkable) Ring Signature
ring signatures lattice based cryptography falcon signature
2018/11/14
We present (linkable) Raptor, the first lattice-based (linkable) ring signature that is practical. Our scheme is as fast as classical solutions; while the size of the signature is roughly 1.3 KB per u...
A $k$-out-of-$n$ Ring Signature with Flexible Participation for Signers
anonymity ring signature k-out-of-n property flexible participation
2018/8/10
A kk-out-of-nn ring signature is a kind of anonymous signature that can be performed by any member in a group. This signature allows the creation of valid signatures if and only if actual signers more...
Post-Quantum One-Time Linkable Ring Signature and Application to Ring Confidential Transactions in Blockchain (Lattice RingCT v1.0)
Linkable Ring Signature Lattice-Based Cryptography Post-Quantum Cryptography
2018/5/2
In this paper, we construct a Lattice-based one-time Linkable Ring Signature (L2RS) scheme, which enables the public to verify if two or more signatures were generated by same signatory, whilst still ...
Constant Size Traceable Ring Signature Scheme without Random Oracles
ring signature traceability constant size signature
2018/3/29
Currently several traceable (or linkable) identity-based ring signature schemes have been proposed. However, most of them are constructed in the random oracle model. In this paper, we present a fully ...
A New Constant-size Accountable Ring Signature Scheme Without Random Oracles
Accountable ring signatures indistinguishability obfuscation puncturable PRFs
2018/3/9
Accountable ring signature (ARS), introduced by Xu and Yung (CARDIS 2004), combines many useful properties of ring and group signatures. In particular, the signer in an ARS scheme has the flexibility ...
RingCT 2.0: A Compact Accumulator-Based (Linkable Ring Signature) Protocol for Blockchain Cryptocurrency Monero
Cryptographic Currency Anonymity
2017/9/25
In this work, we initially study the necessary properties and security requirements of Ring Confidential Transaction (RingCT) protocol deployed in the popular anonymous cryptocurrency Monero. Firstly,...
Multivariate Cryptography is one of the main candidates for creating post-quantum cryptosystems. Especially in the area of digital signatures, there exist many practical and secure multivariate scheme...
Online/Off-line Ring Signature Scheme with Provable Security
unforgeability ring members signer anonymity
2016/1/6
The article proposes an Online/Off-line Ring Signature Scheme in random oracle
model.Security of the scheme relies on both Computational Diffie-Hellman and k-CAA
problems. The proposed scheme is pro...
Constant Size Ring Signature Without Random Oracle
Ring Signature Set Membership Groth-Sahai protocol
2016/1/3
Ring signature enables an user to anonymously sign a message on behalf of a group of
users termed as ‘ring’ formed in an ‘ad-hoc’ manner. A naive scheme produces a signature linear in
the size of th...
This article introduces a method of hiding transaction
amounts in the strongly decentralized anonymous cryptocurrency
Monero. Similar to Bitcoin, Monero is a cryptocurrency which is
distributed thr...
Adapting Lyubashevsky’s Signature Schemes to the Ring Signature Setting
Ring signatures lattices
2014/3/13
Basing signature schemes on strong lattice problems has been a long standing open issue. Today, two families of lattice-based signature schemes are known: the ones based on the hash-and-sign construct...
Forward Secure Ring Signature without Random Oracles
public-key cryptography / Ring Signature
2012/3/26
In this paper, we propose a forward secure ring signature scheme without random oracles. With forward security, if a secret key of a corresponding ring member is exposed, all previously signed signatu...