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Researching Indistinguishability of the Polymorphism Time Stamp Watermarking
Yifeng Yin,Heyu Wen,Kunpeng Fan 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.7
With the rapid development of computer network, digital watermarking, which is an effective digital products copyright protection technology, was widely applied in the security forensic. Those were analyzed that are the defects of existing time stamp scheme of digital watermarking and the characteristics of the pseudo-random sequence. The new scheme based on time stamp and pseudo-random sequence was proposed. Indistinguishability and scalability of watermark were analyzed from the experimental results. And other two aspects were obviously improved in the new scheme, which were in improving protocol’s security and reducing the quantity of data embedded in digital works.
Inter-domain Alliance Authentication Protocol Based on Blind Signature
Zhang Jie,Zhang Qi-kun,Gan Yong,Yin Yifeng,Tan Yu-an 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.12
In large distributed networks, many computers must be mutual coordination to complete some works under the certain conditions, these computers may come from different domains. For ensuring secure cross domains to access resources among these computers in different domains, this paper proposes a multi-domain union authentication protocol. The protocol adopts blind signature to achieve mutual authentication among entities in different domains. This scheme overcomes the complexity of certificate transmission and the network bottlenecks in the scheme of PKI-based. It can trace the entity identity and supports two-way entities anonymous authentication, which avoid the authority counterfeiting its member to access other domain’s resources. Analysis shows that its advantages on security and communication-consumption.