一種基于單向函數(shù)的雙重認(rèn)證存取控制方案
AN AUTHENTICATION-DOUBLED ACCESS CONTROL SCHEME BASED ON ONE-WAY FUNCTION
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摘要: 本文基于單向函數(shù)針對信息保密系統(tǒng)提出了一種雙重認(rèn)證的存取控制方案。該方案與已有類似方案相比要更安全一些,因?yàn)樵谠摲桨钢?用戶保密密鑰不僅用來計(jì)算對所需訪問文件的存取權(quán),也用于認(rèn)證需訪問保密文件的請求用戶的合法性。該方案能夠在動態(tài)環(huán)境中執(zhí)行像改變存取權(quán)和插入/刪除用戶或文件這樣的存取控制操作,而不影響任何用戶的保密密鑰。此外,該方案還具有建立簡單的特點(diǎn)。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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