中文摘要：

介绍了一种支持协同工作的加解密系统．与一般加解密系统不同，此系统在逻辑上将员工划分为不同的组．各组的加密文件可以在组内成员间解密，达到了加密文件共享的目的．

英文摘要：

In this paper, a collaborative work in support of the encryption system is introduced. Different from general encryption systems, the system will divide staff into different groups logically. Each group of encrypted files can be decrypted in the group between members to achieve file-sharing.