摘要
常规加密共享方法发送信息密文时,选择的传输路径时延较大,导致信息的加密与解密时间开销较大,因此提出多级访问安全下电网综合运维信息加密共享方法。筛选属性集合满足多级访问控制树的合法用户,生成用户属性密钥。以16位字节为一组,划分运维信息明文数据。利用加密公钥和属性密钥,加密电网综合运维信息,生成密文数据。选择最优传输路径,传输密文数据块并优化密文块解密流程,实现运维信息共享。实验结果表明,所提出加密共享方法缩短了信息加密时间和解密时间,提高了数据加解密效率。
When the conventional encryption sharing method sends the information ciphertext,the selected transmission path has a large delay,resulting in a large time overhead of information encryption and decryption.Therefore,an encryption and sharing method of power grid comprehensive operation and maintenance information under multi-level access security is proposed.The attribute set is filtered to meet the legal users of the multi-level access control tree and the user attribute key is generated.Then,16 bit bytes are taken as a group to divide the operation and maintenance information plaintext data.The encrypted public key and attribute key are used to encrypt the comprehensive operation and maintenance information of power grid and generate ciphertext data.Finally,the optimal transmission path is selected to transmit ciphertext data blocks,optimize ciphertext block decryption process,and realize the operation and maintenance information sharing.The experiment results show that the proposed encryption sharing method shortens the information encryption time and decryption time,and improves the efficiency of data encryption and decryption.
作者
王皓然
付鋆
刘俊荣
WANG Hao-ran;FU Jun;LIU Jun-rong(Guizhou Power Grid Co.,Ltd.Information Center,Guiyang 550002,China)
出处
《信息技术》
2023年第8期88-93,共6页
Information Technology
基金
南方电网有限责任公司科技项目(066700KK52190020)。
关键词
多级访问安全
电网综合运维信息
加密共享
属性密钥
用户属性
multi-level access security
comprehensive operation and maintenance information of power grid
encrypted sharing
attribute key
user attributes
