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  • Oxford University Press (OUP)  (3)
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  • Oxford University Press (OUP)  (3)
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  • 1
    Online Resource
    Online Resource
    On the Security of LWE Cryptosystem against Subversion Attacks
    Oxford University Press (OUP) ; 2020
    In:  The Computer Journal Vol. 63, No. 4 ( 2020-04-17), p. 495-507
    Details
    In: The Computer Journal, Oxford University Press (OUP), Vol. 63, No. 4 ( 2020-04-17), p. 495-507
    Abstract: Subversion of cryptography has received wide attentions especially after the Snowden Revelations in 2013. Most of the currently proposed subversion attacks essentially rely on the freedom of randomness choosing in the cryptographic protocol to hide backdoors embedded in the cryptosystems. Despite the fact that significant progresses in this line of research have been made, most of them mainly considered the classical setting, while the research gap regarding subversion attacks against post-quantum cryptography remains tremendous. Inspired by this observation, we investigate a subversion attack against existing protocol that is proved post-quantum secure. Particularly, we show an efficient way to undetectably subvert the well-known lattice-based encryption scheme proposed by Regev (STOC 2005). Our subversion enables the subverted algorithm to stealthily leak arbitrary messages to the outsider who knows the backdoor. Through theoretical analysis and experimental observations, we demonstrate that the subversion attack against the LWE encryption scheme is feasible and practical.
    Type of Medium: Online Resource
    ISSN: 0010-4620 , 1460-2067
    URL: Article
    DOI: 10.1093/comjnl/bxz084
    RVK:
    SQ 1100
    RVK:
    SA 3740
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1477172-X
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  • 2
    Online Resource
    Online Resource
    Hierarchical Identity-Based Signature in Polynomial Rings
    Oxford University Press (OUP) ; 2020
    In:  The Computer Journal Vol. 63, No. 10 ( 2020-10-19), p. 1490-1499
    Details
    In: The Computer Journal, Oxford University Press (OUP), Vol. 63, No. 10 ( 2020-10-19), p. 1490-1499
    Abstract: Hierarchical identity-based signature (HIBS) plays a core role in a large community as it significantly reduces the workload of the root private key generator. To make HIBS still available and secure in post-quantum era, constructing lattice-based schemes is a promising option. In this paper, we present an efficient HIBS scheme in polynomial rings. Although there are many lattice-based signatures proposed in recent years, to the best of our knowledge, our HIBS scheme is the first ring-based construction. In the center of our construction are two new algorithms to extend lattice trapdoors to higher dimensions, which are non-trivial and of independent interest. With these techniques, the security of the new scheme can be proved, assuming the hardness of the Ring-SIS problem. Since operations in the ring setting are much faster than those over integers and the new construction is the first ring-base HIBS scheme, our scheme is more efficient and practical in terms of computation and storage cost when comparing to the previous constructions.
    Type of Medium: Online Resource
    ISSN: 0010-4620 , 1460-2067
    URL: Article
    DOI: 10.1093/comjnl/bxaa033
    RVK:
    SQ 1100
    RVK:
    SA 3740
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1477172-X
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  • 3
    Online Resource
    Online Resource
    Multi-Omics Analyses Provide Insight into the Biosynthesis Pathways of Fucoxanthin in Isochrysis Galbana
    Oxford University Press (OUP) ; 2022
    In:  Genomics, Proteomics & Bioinformatics Vol. 20, No. 6 ( 2022-12-01), p. 1138-1153
    Details
    In: Genomics, Proteomics & Bioinformatics, Oxford University Press (OUP), Vol. 20, No. 6 ( 2022-12-01), p. 1138-1153
    Abstract: Isochrysis galbana is considered an ideal bait for functional foods and nutraceuticals of humans because of its high fucoxanthin (Fx) content. However, multi-omics analysis of the regulatory networks for Fx biosynthesis in I. galbana has not been reported. In this study, we report a high-quality genome assembly of I. galbana LG007, which has a genome size of 92.73 Mb, with a contig N50 of 6.99 Mb and 14,900 protein-coding genes. Phylogenetic analysis confirmed the monophyly of Haptophyta, with I. galbana sister to Emiliania huxleyi and Chrysochromulina tobinii. Evolutionary analysis revealed an estimated divergence time between I. galbana and E. huxleyi of ∼ 133 million years ago. Gene family analysis indicated that lipid metabolism-related genes exhibited significant expansion, including IgPLMT, IgOAR1, and IgDEGS1. Metabolome analysis showed that the content of carotenoids in I. galbana cultured under green light for 7 days was higher than that under white light, and β-carotene was the main carotenoid, accounting for 79.09% of the total carotenoids. Comprehensive multi-omics analysis revealed that the content of β-carotene, antheraxanthin, zeaxanthin, and Fx was increased by green light induction, which was significantly correlated with the expression of IgMYB98, IgZDS, IgPDS, IgLHCX2, IgZEP, IgLCYb, and IgNSY. These findings contribute to the understanding of Fx biosynthesis and its regulation, providing a valuable reference for food and pharmaceutical applications.
    Type of Medium: Online Resource
    ISSN: 1672-0229 , 2210-3244
    URL: Article
    DOI: 10.1016/j.gpb.2022.05.010
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2233708-8
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