Anamorphic Signatures With Dictator and Recipient Unforgeability for Long Messages [PDF]
Anamorphic signatures (Kutylowski {\it et al.}, Crypto\u2723) provide a way to covertly use encryption by hiding ciphertexts inside digital signatures without a dictator noticing.
Benoit Libert, Amit Deo
core +1 more source
Post quantum proxy signature scheme based on the multivariate public key cryptographic signature
International Journal of Distributed Sensor Networks, 2020 Proxy signature is a very useful technique which allows the original signer to delegate the signing capability to a proxy signer to perform the signing operation.
Jiahui Chen +6 more
doaj +1 more source
A Group Proxy Signature Scheme Based on Key Matrix
工程科学与技术, 2011 :In order to overcome the problems that the existing group proxy signature schemes do not have strong unforgeability and can not resist collusion attack by proxy themselves, a group proxy signature scheme of resisting collusion attack based on key matrix
谷科, 贾维嘉, 姜春林
doaj
Bird of Prey: Practical Signature Combiners Preserving Strong Unforgeability
Following the announcement of the first winners of the NIST post-quantum cryptography standardization process in 2022, cryptographic protocols are now undergoing migration to the newly standardized schemes.
Jonas Janneck
core +1 more source
A Provably Secure Proxy Signcryption Scheme Using Bilinear Pairings
Journal of Applied Mathematics, 2014 As people in modern societies are busier than any human era and computer network has profound impact on how people work and live through fast and convenient information exchange, people need more help from each other to accomplish more work via network ...
Nai-Wei Lo, Jia-Lun Tsai
doaj +1 more source
Certificateless Anonymous Authentication Scheme Supporting Illegal Signatures Localization for Internet of Vehicles [PDF]
Jisuanji gongchengIn the Internet of Vehicles (IoV) environment, vehicles are connected to public networks through the Internet and information is vulnerable to various malicious attacks from attackers during transmission.
YANG Xiaodong, LI Muzi, MA Guozu, LI Songyu, WANG Caifen
doaj +1 more source
Introducing two ROS attack variants: breaking one-more unforgeability of BZ blind signatures [PDF]
In 2023, Barreto and Zanon proposed a three-round Schnorr-like blind signature scheme, leveraging zero-knowledge proofs to produce one-time signatures as an intermediate step of the protocol.
Lucas C. Cardoso +4 more
core +1 more source
Strongly Unforgeable Ring Signature Scheme from Lattices in the Standard Model
Journal of Applied Mathematics, 2014 In a ring signature scheme, a user selects an arbitrary ring to be able to sign a message on behalf of the ring without revealing the signer’s identity. Whistle-blowers especially find this useful.
Geontae Noh, Ji Young Chun, Ik Rae Jeong
doaj +1 more source
Dictators? Friends? Forgers. Breaking and Fixing Unforgeability Definitions for Anamorphic Signature Schemes [PDF]
Anamorphic signature schemes (KPPYZ, Crypto 2023) allow users to hide encrypted messages in signatures to allow covert communication in a hypothesized scenario where encryption is outlawed by a dictator but authentication is permitted.
Roy Stracovsky, Joseph Jaeger
core +1 more source
ID-based transitive signature schemes without random oracle
Tongxin xuebao, 2010 Based on waters’ signature scheme,the first identity-based transitive signature scheme was proposed and proved secure against attacks in the standard model.Compared with current transitive signature schemes,the unforgeability of the signature’s ...
MA Xiao-long1 +4 more
doaj +2 more sources