Due to the rapid advancements in network technology,blockchain is being employed for distributed data storage.In the Internet of Things(IoT)scenario,different participants manage multiple blockchains located in differ...Due to the rapid advancements in network technology,blockchain is being employed for distributed data storage.In the Internet of Things(IoT)scenario,different participants manage multiple blockchains located in different trust domains,which has resulted in the extensive development of cross-domain authentication techniques.However,the emergence of many attackers equipped with quantum computers has the potential to launch quantum computing attacks against cross-domain authentication schemes based on traditional cryptography,posing a significant security threat.In response to the aforementioned challenges,our paper demonstrates a post-quantum cross-domain identity authentication scheme to negotiate the session key used in the cross-chain asset exchange process.Firstly,our paper designs the hiding and recovery process of user identity index based on lattice cryptography and introduces the identity-based signature from lattice to construct a post-quantum cross-domain authentication scheme.Secondly,our paper utilizes the hashed time-locked contract to achieves the cross-chain asset exchange of blockchain nodes in different trust domains.Furthermore,the security analysis reduces the security of the identity index and signature to Learning With Errors(LWE)and Short Integer Solution(SIS)assumption,respectively,indicating that our scheme has post-quantum security.Last but not least,through comparison analysis,we display that our scheme is efficient compared with the cross-domain authentication scheme based on traditional cryptography.展开更多
Etiology and pathogenesis of vitiligo has not been interpreted perfectly.Epidemiologic evidence about falling level of copper and zinc in blood serum increasing the risk of vitiligo remains contradictory.We investigat...Etiology and pathogenesis of vitiligo has not been interpreted perfectly.Epidemiologic evidence about falling level of copper and zinc in blood serum increasing the risk of vitiligo remains contradictory.We investigated the association between blood serum copper and zinc with vitiligo via performing a meta-analysis.Results indicates there was a significant lower level of copper and zinc in patients with vitiligo compared with healthy population((Z=3.55,P=0.000;SMDCu=?0.84,95%CI,?1.30 to?0.38)and(Z=5.40,P=0.000;SMDZn=?1.01,95%CI,?1.38 to?0.64),respectively).Meanwhile,no statistical evidence for publication bias in the end outcome.Conclusion from our finding offers a meaningful insight into lower level of copper and zinc in serum confer risk to vitiligo.展开更多
基金This work was supported by the Defense Industrial Technology Development Program(Grant No.JCKY2021208B036).
文摘Due to the rapid advancements in network technology,blockchain is being employed for distributed data storage.In the Internet of Things(IoT)scenario,different participants manage multiple blockchains located in different trust domains,which has resulted in the extensive development of cross-domain authentication techniques.However,the emergence of many attackers equipped with quantum computers has the potential to launch quantum computing attacks against cross-domain authentication schemes based on traditional cryptography,posing a significant security threat.In response to the aforementioned challenges,our paper demonstrates a post-quantum cross-domain identity authentication scheme to negotiate the session key used in the cross-chain asset exchange process.Firstly,our paper designs the hiding and recovery process of user identity index based on lattice cryptography and introduces the identity-based signature from lattice to construct a post-quantum cross-domain authentication scheme.Secondly,our paper utilizes the hashed time-locked contract to achieves the cross-chain asset exchange of blockchain nodes in different trust domains.Furthermore,the security analysis reduces the security of the identity index and signature to Learning With Errors(LWE)and Short Integer Solution(SIS)assumption,respectively,indicating that our scheme has post-quantum security.Last but not least,through comparison analysis,we display that our scheme is efficient compared with the cross-domain authentication scheme based on traditional cryptography.
文摘Etiology and pathogenesis of vitiligo has not been interpreted perfectly.Epidemiologic evidence about falling level of copper and zinc in blood serum increasing the risk of vitiligo remains contradictory.We investigated the association between blood serum copper and zinc with vitiligo via performing a meta-analysis.Results indicates there was a significant lower level of copper and zinc in patients with vitiligo compared with healthy population((Z=3.55,P=0.000;SMDCu=?0.84,95%CI,?1.30 to?0.38)and(Z=5.40,P=0.000;SMDZn=?1.01,95%CI,?1.38 to?0.64),respectively).Meanwhile,no statistical evidence for publication bias in the end outcome.Conclusion from our finding offers a meaningful insight into lower level of copper and zinc in serum confer risk to vitiligo.
