Based on the simple introduction of the multi-teeth encryption-decryption algorithm (Shang, 2010, P.1500-1502.), a dynamic secret sharing scheme based on the multi-teeth central encryption system is proposed in this article. In this research, for any K system members , they respectively select the positive integer in the set of distributed randomly, and , and is opened. By P , any l (or more) could reconstruct the shared secret key, and . The result indicates that the scheme proposed in this article has good characteristics of security and encryption.
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