Fingerprinting Protocol Based on Distributed Providers Using Oblivious Transfer
Fingerprinting Protocol Based on Distributed Providers Using Oblivious Transfer
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DOI：
10.1093/ietfec/e89-a.10.2597
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发表时间：
2006-10
期刊：
影响因子：
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通讯作者：
Urara Shinmyo;M. Kuribayashi;M. Morii;Hatsukazu Tanaka
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文献类型：
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作者：
Urara Shinmyo;M. Kuribayashi;M. Morii;Hatsukazu Tanaka
对于大型指纹系统的构建，传统协议需要进行大量的计算才能将每个指纹内容提供给每个用户。为了降低计算成本，我们在指纹协议中引入了分布式提供者的新概念。在销售之前，我们使用安全无关传输概念的实际指纹协议在内容提供者和每个提供者之间执行。然后，每个提供者获得指纹内容，使得指纹信息的每个比特嵌入到内容的每个片段中。当用户向供应商订购某些内容时，内容的每个片段将从供应商指定的每个提供商分发。根据用户的身份执行分发内容片段的提供者的选择，以便在所收集的片段中嵌入的位的序列可以指示用户的身份。
For the construction of a large fingerprinting system, conventional protocols need many computations to provide each fingerprinted contents to each user. In order to reduce the computational cost, we introduce a new concept of distributed providers in the fingerprinting protocol. Before a sale, our practical fingerprinting protocol using a concept of secure oblivious transfer is performed between a contents supplier and each provider. Then each provider obtains fingerprinted contents such that each bit of fingerprinting information is embedded in each segment of the contents. When a user orders some contents to the supplier, each segment of the contents is distributed from each provider specified by the supplier. The selection of providers who distribute the segments of contents is executed based on the user's identity so that the sequence of embedded bits in the collected segments may indicate the user's identity.