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DES加密算法差分能量分析的研究 被引量:2
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作者 钱思进 张凯泽 +1 位作者 王衍波 何德全 《计算机工程与应用》 CSCD 北大核心 2007年第32期146-148,184,共4页
分析差分能量分析原理的基础上,设计了针对DES加密算法的差分能量分析系统并得出了分析的正确率。通过对实验数据的深入观察和分析,发现了可能严重影响DES的DPA分析正确率因素——DES的第四个S盒冲突现象,值得进一步深入研究。
关键词 差分能量分析 观察位 密钥块 冲突
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一种能够实现多种散列函数的VLSI-IP模块设计 被引量:1
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作者 陈英杰 王海欣 +1 位作者 白国强 陈弘毅 《微电子学与计算机》 CSCD 北大核心 2010年第4期89-94,共6页
给出了一种能够实现多种散列函数的VLSI-IP模块设计,应用到一种网络安全处理器的认证模块设计中.在实现SHA-1和CHI安全散列函数运算的基础上,进而利用迭代技术实现散列消息鉴别码HMAC-SHA-1和HMAC-CHI-160,并生成SSL(Security Socket La... 给出了一种能够实现多种散列函数的VLSI-IP模块设计,应用到一种网络安全处理器的认证模块设计中.在实现SHA-1和CHI安全散列函数运算的基础上,进而利用迭代技术实现散列消息鉴别码HMAC-SHA-1和HMAC-CHI-160,并生成SSL(Security Socket Layer)协议中所需的主密钥和密钥块.采用SMIC0.13μm CMOS工艺,综合后关键路径为4.56ns,面积为0.61mm2,运算SHA-1的吞吐率达到1.82Gb/s. 展开更多
关键词 网络安全处理器 散列函数 散列消息鉴别码 密钥块 迭代
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Formal Analysis of Trusted Platform Module Commands for Compromising User Key 被引量:2
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作者 Qin Yu Zhao Shijun Zhang Qianying 《China Communications》 SCIE CSCD 2012年第10期91-102,共12页
The Trusted Platform Module (TPM) is a dedicated hardware chip designed to provide a higher level of security for computing platform. All TPM functionalities are implemented in TPM corntrends to achieve specific sec... The Trusted Platform Module (TPM) is a dedicated hardware chip designed to provide a higher level of security for computing platform. All TPM functionalities are implemented in TPM corntrends to achieve specific security goals. We attempt to analyze the security properties of these commands, especially the key management API. Our study utilizes applied pi calculus to forrmlize the commands and determine how their security properties affect TPM key rmnagement. The attacker is assumed to call TPM comrmnds without bounds and without knowing the TPM root key, expecting to obtain or replace the user key. The analysis goal in our study is to guarantee the corre- sponding property of API execution and the integrity of API data. We analyze the security properties of TPM commands with a process reduction method, identify the key-handle hijack attack on a TPM newly created key, and propose reasonable solutions to solve the problem. Then, we conduct an experiment involving a key-handle attack, which suc- cessfully replaces a user key with an attacker's key using lmlicious TPM software. This paper discloses the weakness of the relationship between the key handle and the key object. After the TPM software stack is compromised, the attacker can hunch a keyhandle attack to obtain the user key and even break into the whole storage tree of user keys. 展开更多
关键词 trusted computing TPM TPM command applied pi calculus API analysis
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Counterfactual Quantum Deterministic Key Distribution
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作者 张盛 王剑 唐朝京 《Communications in Theoretical Physics》 SCIE CAS CSCD 2013年第1期27-31,共5页
We propose a new counterfactual quantum cryptography protocol concerning about distributing a deterministic key.By adding a controlled blocking operation module to the original protocol [T.G.Noh,Phys.Rev.Lett.103(2009... We propose a new counterfactual quantum cryptography protocol concerning about distributing a deterministic key.By adding a controlled blocking operation module to the original protocol [T.G.Noh,Phys.Rev.Lett.103(2009) 230501],the correlation between the polarizations of the two parties,Alice and Bob,is extended,therefore,one can distribute both deterministic keys and random ones using our protocol.We have also given a simple proof of the security of our protocol using the technique we ever applied to the original protocol.Most importantly,our analysis produces a bound tighter than the existing ones. 展开更多
关键词 quantum key distribution quantum cryptography quantum communication
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