结合单钥加密和双钥加密的理论，分别给出了纵向的等级安全管理密钥管理方法和横向的协同工作安全管理的工作组密钥管理方法。

With the application of symmetric cipher and asymmetric cipher, a cryptographic key management scheme for hierarchy is presented and a workgroup cryptographic key management scheme is presented.

youdao

对灰色加密理论中的多用户双锁加密系统进行了改进，提出了一种基于多用户双锁加密系统的密钥分存方案。

The multiuser both-lock encryption system of grey encryption theory is improved and a secret sharing scheme based on both-lock encryption system is put forward.

youdao