CAJ | 학술논문

为解决数字媒体上的版权问题.对广播加密方案以及能够有效剔除泄密者的泄密者追踪方案做出了深入的研究.采用基于身份的广播加密方案中加入基于门限的泄密者追踪机制的理论分析和实验方法,引入多个密码学哈希函数,并对私钥进行分组处理,实现了基于门限的广播加密及泄密者追踪方案算法的改进.研究结果表明:该算法降低了密文头的大小,压缩了公钥大小,减少了服务器开销,实现了优化叛徒追踪机制,能够推动广播加密技术在实际生活中的使用.
위해결수자매체상적판권문제.대엄파가밀방안이급능구유효척제설밀자적설밀자추종방안주출료심입적연구.채용기우신빈적엄파가밀방안중가입기우문한적설밀자추종궤제적이론분석화실험방법,인입다개밀마학합희함수,병대사약진행분조처리,실현료기우문한적엄파가밀급설밀자추종방안산법적개진.연구결과표명:해산법강저료밀문두적대소,압축료공약대소,감소료복무기개소,실현료우화반도추종궤제,능구추동엄파가밀기술재실제생활중적사용.
@@@@In order to solve the problem associated with the copyright of digital media, the authors conducted an in-depth investigation on the traitor’s tracking scheme in terms of broadcast encryption. This paper presents the theory and experimental methods that the broadcast encryption scheme based on identity is added with the traitor’s tracking mechanism. In addition, lots of cryptography’s hash functions are introduced, and the private keys are packet processed. Therefore, the study improves the traitor’s based Broadcast Encryption Algorithm. The study shows that the algorithm reduces cipher text head’s size, public key’s size and the server’s cost, realizes the optimization of traitor tracing mechanism, and enables the application of the broadcast encryption technology in the actual life.