一种基于单向函数的双重认证存取控制方案
AN AUTHENTICATION-DOUBLED ACCESS CONTROL SCHEME BASED ON ONE-WAY FUNCTION
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摘要: 本文基于单向函数针对信息保密系统提出了一种双重认证的存取控制方案。该方案与已有类似方案相比要更安全一些,因为在该方案中,用户保密密钥不仅用来计算对所需访问文件的存取权,也用于认证需访问保密文件的请求用户的合法性。该方案能够在动态环境中执行像改变存取权和插入/删除用户或文件这样的存取控制操作,而不影响任何用户的保密密钥。此外,该方案还具有建立简单的特点。Abstract: Based on a one-way function, this paper proposed an authentication-doubled access control scheme for information protection system. The scheme is safer than the previously proposed schemes. In the scheme, the user s secret key is used not only for computing the corresponding access privilege to the intended file, but also for authenticating the requesting user not to illegitimately access the protected file. The scheme can perform the access control in dynamic environments, such as change access priviledges and insert/delete users or files. Beside, the scheme is simple to establish.
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