Results 221 to 230 of about 1,515,339 (267)

Enhanced blockchain based key management scheme against key exposure attack

Proceedings of the International Conference on Artificial Intelligence, Information Processing and Cloud Computing, 2019
The data collected by IoT devices is of great value, which makes people urgently need a secure device key management strategy to protect their data. Existing works introduce the blockchain technology to transfer the responsibility of key management from the trusted center in the traditional key management strategy to the devices, thus eliminating the ...
Mingxin Ma, Xiaotong Yang, Guozhen Shi, Fenghua Li 0001   +3 more
openaire   +1 more source

Partial Key Exposure Attack on CRT-RSA

2009
Consider CRT-RSA with N = pq , q < p < 2q , public encryption exponent e and private decryption exponents d p , d q . Jochemsz and May (Crypto 2007) presented that CRT-RSA is weak when d p , d q are smaller than N 0.073. As a follow-up work of that paper, we study the partial key exposure attack on CRT-RSA when some Most Significant Bits (MSBs) of d p ,
Santanu Sarkar 0001, Subhamoy Maitra
openaire   +1 more source

Partial Key Exposure Attack on CRT-RSA

2014
In Eurocrypt 2005, Ernst et al. proposed an attack on RSA allowing to recover the secret key when the most or least significant bits of the decryption exponent \(d\) are known. In Indocrypt 2011, Sarkar generalized this by considering the number of unexposed blocks in the decryption exponent is more than one. In this paper, for the first time, we study
Santanu Sarkar 0001, Ayineedi Venkateswarlu   +1 more
openaire   +1 more source

Nickel Exposure From Keys: Alternatives for Protection and Prevention

Dermatitis®, 2013
Background Keys are an important exposure source of metal allergens to consumers and confer a significant problem for nickel-allergic individuals because of repeated daily use. Objectives The aims of this study were to investigate the ...
Dathan, Hamann, Andrew J, Scheman, Sharon E, Jacob   +2 more
openaire   +2 more sources

Partial Key Exposure Attacks on RSA with Exponent Blinding

2016
Partial key exposure attacks, introduced by Boneh, Durfee and Frankel in 1998, aim at retrieving an RSA private key when a fraction of its bits is known. These attacks are of particular interest in the context of side-channel attacks, where the attacker can retrieve bits of the key exploiting leakages in the implementation.
S. Cimato, S. Mella, R. Susella
openaire   +2 more sources

Efficient online/offline signcryption without key exposure

International Journal of Grid and Utility Computing, 2013
An online/offline signcryption scheme provides confidentiality and authentication simultaneously, and it is particularly suitable for the application of resource-constrained systems. In this paper, we present a key-exposure free online/offline signcryption scheme.
Fei Yan, Xiaofeng Chen 0001, Yinghui Zhang 0002   +2 more
openaire   +1 more source

Enabling cloud storage auditing with key-exposure resilience under continual key-leakage

Information Sciences, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chengyu Hu 0001, Yuqin Xu, Pengtao Liu, Jia Yu 0003, Shanqing Guo, Minghao Zhao 0001   +5 more
openaire   +2 more sources

Chameleon Hashes Without Key Exposure Based on Factoring

Journal of Computer Science and Technology, 2007
Chameleon hash is the main primitive to construct a chameleon signature scheme which provides nonrepudiation and non-transferability simultaneously. However, the initial chameleon hash schemes suffer from the key exposure problem: non-transferability is based on an unsound assumption that the designated receiver is willing to abuse his private key ...
Wei Gao 0007, Xueli Wang, Dongqing Xie
openaire   +1 more source

Certificateless Key-Insulated Encryption: Cryptographic Primitive for Achieving Key-Escrow Free and Key-Exposure Resilience

2016
Certificateless encryption (CLE) alleviates the heavy certificate management in traditional public key encryption and the key escrow problem in the ID-based encryption simultaneously. Current CLE schemes assumed that the user’s secret key is absolutely secure.
Libo He, Chen Yuan 0002, Hu Xiong, Zhiguang Qin   +3 more
openaire   +2 more sources

Defending against key exposure in attribute-based encryption

International Journal of Ad Hoc and Ubiquitous Computing, 2014
Since the notion of attribute-based encryption (ABE) was proposed, it has been found a lot of important applications such as fine-grained access control. However, the issue of key exposure problem in ABE has been solved completely. This problem is formally addressed and formulated in this paper. More specifically, we propose a new key-insulated ABE (KI-
J. Li, X. Chen, H. Tian, Chong Gao
openaire   +1 more source