We pose and investigate the distributed secure source coding based on the common key cryptosystem. This cryptosystem includes the secrecy amplification problem for distributed encrypted sources with correlated keys using post-encryption-compression, which was posed investigated by Santoso and Oohama. In this paper we propose another new security criterion which is generally more strict compared to the commonly used security criterion which is based on the upper-bound of mutual information between the plaintext and the ciphertext. Under this criterion, we establish the necessary and sufficient condition for the secure transmission of correlated sources.
翻译:我们根据通用关键加密系统提出并调查分布式的安全源编码。这一加密系统包括使用加密后压缩法调查的、使用相关密钥的分布式加密源的保密扩增问题,桑托斯和奥瓦马对此进行了调查。在本文中,我们提出了另一个与通用安全标准相比更为严格的新安全标准,通用安全标准基于平文本和密码文本之间相互信息的上限。根据这项标准,我们为安全传输相关源设定了必要和充分的条件。