Abstract: A dynamic and verifiable threshold color visual multi-secret sharing scheme was proposed. The scheme shared many secret images so that any t or more sub-secrets could recover the secret image, but any t-1 or fewer of them gained no information about the original secret image. In the scheme, multiple secrets can be shared in one sharing session. The sub-secret of each participant can be used by many times，and the secrets can be renewed without renewing the sub-secrets of the participants. What is more, a participant can be flexibly accepted or fired.

Key words: color visual, threshold secret sharing, dynamic, multi-secret, verifiable

摘要： 提出了动态可验证的彩色可视多重秘密共享方案。该方案共享多幅秘密图像，使得任意t个或更多的子秘密能够恢复秘密图像，而任意t-1或者少于t个子秘密却得不到有关图像的任意信息。该方案通过一次秘密共享就可以实现对多个秘密图像的共享。方案中每个参与者的子秘密可多次使用，秘密更新时，无需更新参与者的子秘密,同时，可以灵活增加或删除某个参与者。

关键词: 彩色可视, 门限秘密共享, 动态, 多重秘密, 可验证