As the extensive use of cloud computing raises questions about the security of any personal data stored there,cryptography is being used more frequently as a security tool to protect data confidentiality and privacy i...As the extensive use of cloud computing raises questions about the security of any personal data stored there,cryptography is being used more frequently as a security tool to protect data confidentiality and privacy in the cloud environment.A hypervisor is a virtualization software used in cloud hosting to divide and allocate resources on various pieces of hardware.The choice of hypervisor can significantly impact the performance of cryptographic operations in the cloud environment.An important issue that must be carefully examined is that no hypervisor is completely superior in terms of performance;Each hypervisor should be examined to meet specific needs.The main objective of this study is to provide accurate results to compare the performance of Hyper-V and Kernel-based Virtual Machine(KVM)while implementing different cryptographic algorithms to guide cloud service providers and end users in choosing the most suitable hypervisor for their cryptographic needs.This study evaluated the efficiency of two hypervisors,Hyper-V and KVM,in implementing six cryptographic algorithms:Rivest,Shamir,Adleman(RSA),Advanced Encryption Standard(AES),Triple Data Encryption Standard(TripleDES),Carlisle Adams and Stafford Tavares(CAST-128),BLOWFISH,and TwoFish.The study’s findings show that KVM outperforms Hyper-V,with 12.2%less Central Processing Unit(CPU)use and 12.95%less time overall for encryption and decryption operations with various file sizes.The study’s findings emphasize how crucial it is to pick a hypervisor that is appropriate for cryptographic needs in a cloud environment,which could assist both cloud service providers and end users.Future research may focus more on how various hypervisors perform while handling cryptographic workloads.展开更多
随着运营线路的增多,郑州地铁已进入网络化运营的新阶段,对设备的日常维护也提出了更高的要求,通信专业设备众多,更需要通过智能运维来满足网络化运营的新要求。本文基于车站、控制中心的通信设备的维护现状,通过研究通信专业智能化集...随着运营线路的增多,郑州地铁已进入网络化运营的新阶段,对设备的日常维护也提出了更高的要求,通信专业设备众多,更需要通过智能运维来满足网络化运营的新要求。本文基于车站、控制中心的通信设备的维护现状,通过研究通信专业智能化集中运维方式,优化日常运维场景、故障处理场景、抢险抢修场景下人员分工和生产方式,提出新的基于KVM OVER IP的设备管理架构和运维模式,在不影响现网正常稳定运行、投资成本不高的情况下,实现地铁通信专业设备的集中化、智能化维护,进一步提升设备管理维护水平,同时为下一步建设网管网奠定基石,最终可轻松实现业务、管理2张网运行,结合大数据技术亦可实现地铁通信设备的智能监测、智能分析、智能维护,最大化的增加经济效益。展开更多
在新建管制大厅中,考虑到设备噪音和散热对管制运行环境的影响,提出一种基于光纤多计算机切换器(Keyboard Video Mouse,KVM)矩阵的管制席位搭建方案。首先介绍了光纤矩阵的硬件设备及其工作原理,其次分析了空管自动化系统席位应用光纤KV...在新建管制大厅中,考虑到设备噪音和散热对管制运行环境的影响,提出一种基于光纤多计算机切换器(Keyboard Video Mouse,KVM)矩阵的管制席位搭建方案。首先介绍了光纤矩阵的硬件设备及其工作原理,其次分析了空管自动化系统席位应用光纤KVM矩阵的作用,最后分析了空管自动化系统席位应用光纤KVM矩阵的要求及席位搭建方案,以期为光纤KVM矩阵在管制大厅的应用提供参考。展开更多
传统反病毒架构不能有效利用虚拟化优势解决云平台上的Windows系统所面临的恶意软件威胁,并且传统反病毒软件自身面临安全威胁,针对此问题,提出一种基于KVM的无代理Windows客户机进程在线杀毒技术。通过在KVM内核模块中添加读写内存的函...传统反病毒架构不能有效利用虚拟化优势解决云平台上的Windows系统所面临的恶意软件威胁,并且传统反病毒软件自身面临安全威胁,针对此问题,提出一种基于KVM的无代理Windows客户机进程在线杀毒技术。通过在KVM内核模块中添加读写内存的函数,以及为进程处理模块提供在其中注册钩子的接口等方法,解析客户机当前进程信息。将进程在内存中的PE(portable executable)镜像大致还原成运行前的磁盘文件后,调用开源杀毒引擎Clam AV(Clam Anti Virus)进行扫描查毒。查毒结果返回给决策模块后,由进程处理内核模块对可疑进程进行相应处理,实现对客户机当前进程的无代理查杀。分析及测试结果表明,该技术利用虚拟化优势较好地解决了传统反病毒框架的资源耗费和自身安全性问题。展开更多
文摘As the extensive use of cloud computing raises questions about the security of any personal data stored there,cryptography is being used more frequently as a security tool to protect data confidentiality and privacy in the cloud environment.A hypervisor is a virtualization software used in cloud hosting to divide and allocate resources on various pieces of hardware.The choice of hypervisor can significantly impact the performance of cryptographic operations in the cloud environment.An important issue that must be carefully examined is that no hypervisor is completely superior in terms of performance;Each hypervisor should be examined to meet specific needs.The main objective of this study is to provide accurate results to compare the performance of Hyper-V and Kernel-based Virtual Machine(KVM)while implementing different cryptographic algorithms to guide cloud service providers and end users in choosing the most suitable hypervisor for their cryptographic needs.This study evaluated the efficiency of two hypervisors,Hyper-V and KVM,in implementing six cryptographic algorithms:Rivest,Shamir,Adleman(RSA),Advanced Encryption Standard(AES),Triple Data Encryption Standard(TripleDES),Carlisle Adams and Stafford Tavares(CAST-128),BLOWFISH,and TwoFish.The study’s findings show that KVM outperforms Hyper-V,with 12.2%less Central Processing Unit(CPU)use and 12.95%less time overall for encryption and decryption operations with various file sizes.The study’s findings emphasize how crucial it is to pick a hypervisor that is appropriate for cryptographic needs in a cloud environment,which could assist both cloud service providers and end users.Future research may focus more on how various hypervisors perform while handling cryptographic workloads.
文摘随着运营线路的增多,郑州地铁已进入网络化运营的新阶段,对设备的日常维护也提出了更高的要求,通信专业设备众多,更需要通过智能运维来满足网络化运营的新要求。本文基于车站、控制中心的通信设备的维护现状,通过研究通信专业智能化集中运维方式,优化日常运维场景、故障处理场景、抢险抢修场景下人员分工和生产方式,提出新的基于KVM OVER IP的设备管理架构和运维模式,在不影响现网正常稳定运行、投资成本不高的情况下,实现地铁通信专业设备的集中化、智能化维护,进一步提升设备管理维护水平,同时为下一步建设网管网奠定基石,最终可轻松实现业务、管理2张网运行,结合大数据技术亦可实现地铁通信设备的智能监测、智能分析、智能维护,最大化的增加经济效益。
文摘在新建管制大厅中,考虑到设备噪音和散热对管制运行环境的影响,提出一种基于光纤多计算机切换器(Keyboard Video Mouse,KVM)矩阵的管制席位搭建方案。首先介绍了光纤矩阵的硬件设备及其工作原理,其次分析了空管自动化系统席位应用光纤KVM矩阵的作用,最后分析了空管自动化系统席位应用光纤KVM矩阵的要求及席位搭建方案,以期为光纤KVM矩阵在管制大厅的应用提供参考。
文摘传统反病毒架构不能有效利用虚拟化优势解决云平台上的Windows系统所面临的恶意软件威胁,并且传统反病毒软件自身面临安全威胁,针对此问题,提出一种基于KVM的无代理Windows客户机进程在线杀毒技术。通过在KVM内核模块中添加读写内存的函数,以及为进程处理模块提供在其中注册钩子的接口等方法,解析客户机当前进程信息。将进程在内存中的PE(portable executable)镜像大致还原成运行前的磁盘文件后,调用开源杀毒引擎Clam AV(Clam Anti Virus)进行扫描查毒。查毒结果返回给决策模块后,由进程处理内核模块对可疑进程进行相应处理,实现对客户机当前进程的无代理查杀。分析及测试结果表明,该技术利用虚拟化优势较好地解决了传统反病毒框架的资源耗费和自身安全性问题。
