Terms of the functions from the campus card, campus card mainly as anelectronic wallet and identity of two functions. Therefore, the campus card system outthere is common information management system of information security risks thatexist outside the campus, there are still risks of information security card, campuscard balance in the databases and other sensitive data
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Terms of the functions from the campus card, campus card mainly as anelectronic wallet and identity of two functions. Therefore, the campus card system outthere is common information management system of information security risks thatexist outside the campus, there are still risks of information security card, campuscard balance in the databases and other sensitive data
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In the past few years, bilinear pairing has become a hot mathematical tool incryptography research field, and has been widely used in designing varies of public keycryptosystems. This paper studies on bilinear pairing-based public key cryptography, andachieveds the following results:(1) In Journal of Computers (2011), Kang et al presented apublic key encryption scheme from bilinear
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The erosion of trust put in traditional database servers and in Database Service Providers and the growing interest for different forms of selective data dissemination are different factors that lead to move the access control from servers to clients.Different data encryption and key dissemination schemes have been proposed to serve this purpose.Based on the symmetric
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Signcryption,which was first proposed by Zheng in 1997,simultaneously fulfills both the functions of digital signature and encryption in a logical single step.It needs a lower cost than the tranditional signature-then-encryption approach.Zheng’s schem-e, which satisfies confidentiality and authentication,initiates signcryption’s study and development.Multi-signcryption scheme is an extension of signcryption scheme for multi-signer performing together the signcryption operation
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As the computer network realizing the resources sharing effectively, network information security problem has become particularly prominent. In order to ensure the confidentiality, integrity, availability of the network information, we should pay more attention to network authentication technology. Authentication technology is mainly used to prevent the initiative attacks of the opponents to the system, such
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Modern information security system often require different implementations of cryptography in various environments, since the exposure of secrect keys usually means the security is entirely lost, this problem is probably the greatest threat to security scheme in real world, and people come to realize that in some certain circumstances key exposure is inevitable. Then two
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With the rapid development of internet, a number of companies and individuals have stored data on a third-party server. How to ensure the confidentiality and privacy of private data has become an urgent problem. Encryption is an effective means of protecting the confidentiality and privacy of data, but retrieval on the encrypted data is a
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Provable Security is a formal method for proving the security of cryptographic schemes, in which the difficulty of breaking a particular scheme is formally related to that of solving a widely believed computational hard problem. Provable security has already become an important theme of theoretical researches in modern cryptography. This dissertation investigates the provable security
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Security is one of the most important problems in the communication and information system, while the cryptography is the basis for the security. The principal of public-key cryptography is exchanging information between parties without requiring a secure channel. Public-key systems are used for key exchange or distribution in symmetric cryptosystems. Except for the key exchange,
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