Results 11 to 20 of about 1,707,394 (241)

Quantum Random Oracle Model for Quantum Public-Key Encryption

IEEE Access, 2019
Random oracle model is a general security analysis tool for rigorous security proof and effective cryptographic protocol design. In the quantum world, the attempts of constructing a quantum random oracle (QRO) have been made, such as quantum-accessible ...
Ranyiliu Chen, Tao Shang
exaly   +3 more sources

Indifferentiable hash functions in the standard model

IET Information Security, 2021
Indifferentiability of iterated hash functions is seen as evidence that there are no structural flaws in the iteration structure of the algorithm. However, it is often overlooked that such considerations only hold in the random oracle model and do not ...
Juha Partala
doaj   +1 more source

Quantum Search Approaches to Sampling-Based Motion Planning

IEEE Access, 2023
In this paper, we present a novel formulation of traditional sampling-based motion planners as database-oracle structures that can be solved via quantum search algorithms.
Paul Lathrop, Beth Boardman, Sonia Martinez   +2 more
doaj   +1 more source

A New Identification Scheme based on Syndrome Decoding Problem with Provable Security against Quantum Adversaries [PDF]

Journal of Universal Computer Science, 2019
Recently, in order to guarantee security against quantum adversaries, several identification (ID) schemes based on computational problems which are supposed to be hard even for quantum computers have been proposed. However, their security are only proven
Bagus Santoso, Chunhua Su
doaj   +3 more sources

Tightly Secure PKE Combiner in the Quantum Random Oracle Model

Cryptography, 2022
The development of increasingly sophisticated quantum computers poses a long-term threat to current cryptographic infrastructure. This has spurred research into both quantum-resistant algorithms and how to safely transition real-world implementations and
Brian Goncalves, Atefeh Mashatan
doaj   +1 more source

Identity-Based Partially Blind Signature Scheme: Cryptanalysis and Construction

IEEE Access, 2021
Blind signature is a special type of digital signature, the signer cannot see the specific content signed. However, blindness may cause users to abuse their rights.
Yuhong Jiang, Lunzhi Deng, Bingqin Ning
doaj   +1 more source

An Improved Scheme for Blockchain Oracle Based on Schnorr Signature [PDF]

Jisuanji gongcheng
Blockchain oracle is a type of middleware that provides trustworthy guarantee for on-chain data, effectively addressing the trust problem of on- and off-chain data transmission.
Huaiyong CUI, Shaohua ZHANG, Chao LI, Bingrong DAI
doaj   +1 more source

Efficient All-or-Nothing Public Key Encryption With Authenticated Equality Test

IEEE Access, 2021
Public key encryption with equality test (PKEET for short) is a new cryptographic primitive which allows a proxy to check whether two ciphertexts encrypted under different public keys are of the same plaintext.
Zhi-Yan Zhao, Peng Zeng
doaj   +1 more source

Sequential Hashing with Minimum Padding

Cryptography, 2018
This article presents a sequential domain extension scheme with minimum padding for hashing using a compression function. The proposed domain extension scheme is free from the length extension property.
Shoichi Hirose
doaj   +1 more source

Indifferentiability of the Sponge Construction with a Restricted Number of Message Blocks

IACR Transactions on Symmetric Cryptology, 2023
The sponge construction is a popular method for hashing. Quickly after its introduction, the sponge was proven to be tightly indifferentiable from a random oracle up to ≈ 2c/2 queries, where c is the capacity.
Charlotte Lefevre
doaj   +1 more source