In Wireless Sensor Networks (WSNs), it is necessary to predict computational overheads of security mechanisms without final implementations to provide guidelines for system design. This paper presents an accurate and ...In Wireless Sensor Networks (WSNs), it is necessary to predict computational overheads of security mechanisms without final implementations to provide guidelines for system design. This paper presents an accurate and flexible model to predict overheads of these mechanisms. This model is based on overheads of basic operations frequently used in cryptography algorithms, which are essential elements of security mechanisms. Several popular cryptography algorithms and security mechanisms are evaluated using this model. According to simulation results, relative prediction errors are less than 7% for most cryptography algorithms and security mechanisms.展开更多
The growing demand for international travel has highlighted the critical need for reliable tools to verify travelers’healthcare status and meet entry requirements.Personal health passports,while essential,face signif...The growing demand for international travel has highlighted the critical need for reliable tools to verify travelers’healthcare status and meet entry requirements.Personal health passports,while essential,face significant challenges related to data silos,privacy protection,and forgery risks in global sharing.To address these issues,this study proposes a blockchain-based solution designed for the secure storage,sharing,and verification of personal health passports.This innovative approach combines on-chain and off-chain storage,leveraging searchable encryption to enhance data security and optimize blockchain storage efficiency.By reducing the storage burden on the blockchain,the system ensures both the secure handling and reliable sharing of sensitive personal health data.An optimized consensus mechanism streamlines the process into two stages,minimizing communication complexity among nodes and significantly improving the throughput of the blockchain system.Additionally,the introduction of advanced aggregate signature technology accommodates multi-user scenarios,reducing computational overhead for signature verification and enabling swift identification ofmalicious forgers.Comprehensive security analyses validate the system’s robustness and reliability.Simulation results demonstrate notable performance improvements over existing solutions,with reductions in computational overhead of up to 49.89%and communication overhead of up to 25.81%inmulti-user scenarios.Furthermore,the optimized consensus mechanism shows substantial efficiency gains across varying node configurations.This solution represents a significant step toward addressing the pressing challenges of health passport management in a secure,scalable,and efficient manner.展开更多
基金Supported by 863 Project of China (No.2006AA01Z224)
文摘In Wireless Sensor Networks (WSNs), it is necessary to predict computational overheads of security mechanisms without final implementations to provide guidelines for system design. This paper presents an accurate and flexible model to predict overheads of these mechanisms. This model is based on overheads of basic operations frequently used in cryptography algorithms, which are essential elements of security mechanisms. Several popular cryptography algorithms and security mechanisms are evaluated using this model. According to simulation results, relative prediction errors are less than 7% for most cryptography algorithms and security mechanisms.
文摘The growing demand for international travel has highlighted the critical need for reliable tools to verify travelers’healthcare status and meet entry requirements.Personal health passports,while essential,face significant challenges related to data silos,privacy protection,and forgery risks in global sharing.To address these issues,this study proposes a blockchain-based solution designed for the secure storage,sharing,and verification of personal health passports.This innovative approach combines on-chain and off-chain storage,leveraging searchable encryption to enhance data security and optimize blockchain storage efficiency.By reducing the storage burden on the blockchain,the system ensures both the secure handling and reliable sharing of sensitive personal health data.An optimized consensus mechanism streamlines the process into two stages,minimizing communication complexity among nodes and significantly improving the throughput of the blockchain system.Additionally,the introduction of advanced aggregate signature technology accommodates multi-user scenarios,reducing computational overhead for signature verification and enabling swift identification ofmalicious forgers.Comprehensive security analyses validate the system’s robustness and reliability.Simulation results demonstrate notable performance improvements over existing solutions,with reductions in computational overhead of up to 49.89%and communication overhead of up to 25.81%inmulti-user scenarios.Furthermore,the optimized consensus mechanism shows substantial efficiency gains across varying node configurations.This solution represents a significant step toward addressing the pressing challenges of health passport management in a secure,scalable,and efficient manner.
