产生内容密钥控制信息 Content Key Control Message ; CKCM
内容密钥控制信息 Content Key Control Message
组控制密钥更新 Group Control Key Renewal
提出了一种新的密钥控制下的分层变换的数字图像置乱算法。
Presents a new technology for scrambling and restoring digital image Based on the hierarchical transformation under the control of secret key.
首先将水印信息进行PDF417编码，并在密钥控制下进行混沌序列置乱后得到二值水印图像；
Firstly, it can be obtained 2-value watermark image by PDF417 coding to watermark information and chaotic sequence scrambling.
这些操作可以是安全配置更改、密钥和证书管理、访问控制策略更改、总线和其他系统资源管理等等。
These actions can be security configuration changes, key and certificate management, access control policy changes, bus and other system resources management, and so on.
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