A new hierarchical identity based (ID-based) cryptosystem is proposed, including hierarchical ID-based encryption and signature.
提出一个基于分级身份的密码系统：包括分级的基于身份的加密和签名方案。
This paper presents a partial encryption of gray images compressed by Set Partitioning in Hierarchical Trees (SPIHT).
图像部分加密方法只加密图像压缩编码的部分重要数据，是一种可行的实时加密方案。
In order to keep data at rest from being accessed, stolen, or altered by unauthorized people, security measures such as data encryption and hierarchical password protection are commonly used.
为了防止静止数据被不法人士存取、窃取或修改，通常采取一些安全措施，如数据加密和分等级的口令保护。
In order to keep data at rest from being accessed, stolen, or altered by unauthorized people, security measures such as data encryption and hierarchical password protection are commonly used.
为了防止静止数据被不法人士存取、窃取或修改，通常采取一些安全措施，如数据加密和分等级的口令保护。
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