Within the framework of universal composability,an appropriate ideal functionality that captures the basic security requirements of three party password-based key exchange was defined. An efficient real-word three par...Within the framework of universal composability,an appropriate ideal functionality that captures the basic security requirements of three party password-based key exchange was defined. An efficient real-word three party password-based key exchange protocol was also proposed.This protocol securely realizes the ideal functionality with respect to static party corruption.Thus it provides security guarantees under arbitrary composition with other protocols.展开更多
Cloud computing has reached the peak of Gartner hype cycle,and now the focus of the whole telecom industry is the ability to scale data storage with minimal investment.But data privacy and communication issues will oc...Cloud computing has reached the peak of Gartner hype cycle,and now the focus of the whole telecom industry is the ability to scale data storage with minimal investment.But data privacy and communication issues will occur with the increment of the cloud data storage.The key privacy concern for scalability is caused by the dynamic membership allocation and multi-owner data sharing.This paper addresses the issues faced by multiple owners through a mutual authentication mechanism using the Enhanced Elliptic Curve Diffie-Hellman(EECDH)key exchange protocol along with the Elliptic Curve Digital Signature Algorithm(ECDSA).The proposed EECDH scheme is used to exchange the secured shared key among multiple owners and also to eliminate the Man-In-The-Middle(MITM)attacks with less computational complexity.By leveraging these algorithms,the integrity of data sharing among multiple owners is ensured.The EECDH improves the level of security only slightly increasing the time taken to encrypt and decrypt the data,and it is secured against the MITM attacks,which is experimented using the AVISPA tool.展开更多
为降低数据库(DB)明文泄露的风险,提出一种基于ECDH和Rijndael算法的DB加密方案。该方案支持128 bit、192 bit、256 bit 3种密钥长度,通过对私钥与公钥之积进行转换,生成加密密钥,从而使私钥独立于数据库管理系统之外,防止密钥从数据库...为降低数据库(DB)明文泄露的风险,提出一种基于ECDH和Rijndael算法的DB加密方案。该方案支持128 bit、192 bit、256 bit 3种密钥长度,通过对私钥与公钥之积进行转换,生成加密密钥,从而使私钥独立于数据库管理系统之外,防止密钥从数据库中泄露。基于.Net平台的实验结果表明,实现的加密系统密钥空间最大为2256,不同记录数下的加密时间、加密效果及密钥敏感性均令人满意,并能抵御穷举攻击和差分攻击。展开更多
基金Project(60573036)supported by the National Natural Science Foundation of china
文摘Within the framework of universal composability,an appropriate ideal functionality that captures the basic security requirements of three party password-based key exchange was defined. An efficient real-word three party password-based key exchange protocol was also proposed.This protocol securely realizes the ideal functionality with respect to static party corruption.Thus it provides security guarantees under arbitrary composition with other protocols.
文摘Cloud computing has reached the peak of Gartner hype cycle,and now the focus of the whole telecom industry is the ability to scale data storage with minimal investment.But data privacy and communication issues will occur with the increment of the cloud data storage.The key privacy concern for scalability is caused by the dynamic membership allocation and multi-owner data sharing.This paper addresses the issues faced by multiple owners through a mutual authentication mechanism using the Enhanced Elliptic Curve Diffie-Hellman(EECDH)key exchange protocol along with the Elliptic Curve Digital Signature Algorithm(ECDSA).The proposed EECDH scheme is used to exchange the secured shared key among multiple owners and also to eliminate the Man-In-The-Middle(MITM)attacks with less computational complexity.By leveraging these algorithms,the integrity of data sharing among multiple owners is ensured.The EECDH improves the level of security only slightly increasing the time taken to encrypt and decrypt the data,and it is secured against the MITM attacks,which is experimented using the AVISPA tool.
文摘为降低数据库(DB)明文泄露的风险,提出一种基于ECDH和Rijndael算法的DB加密方案。该方案支持128 bit、192 bit、256 bit 3种密钥长度,通过对私钥与公钥之积进行转换,生成加密密钥,从而使私钥独立于数据库管理系统之外,防止密钥从数据库中泄露。基于.Net平台的实验结果表明,实现的加密系统密钥空间最大为2256,不同记录数下的加密时间、加密效果及密钥敏感性均令人满意,并能抵御穷举攻击和差分攻击。
