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Erschienen in:
2005 | OriginalPaper | Buchkapitel
Protecting Mass Data Basing on Small Trusted Agent
verfasst von : Fangyong Hou, Zhiying Wang, Kui Dai, Yun Liu
Erschienen in: Information Security Practice and Experience
Verlag: Springer Berlin Heidelberg
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Providing data confidentiality and integrity is essential to ensure secure or trusted computing. Designs for such purpose always face substaintial difficulties, as providing solid security will be contrary to achieving satisfied performance. Basing on a less rigor precondition that will be tenable in many cases, such designs can be implemented with smaller endeavors. The core idea is to let a trusted agent to trustworthily hold one unique timestamp for each untrusted data block; and encrypts each block, as well as the related integrity code, through the corresponding timestamp. In such way, any malicious disclosure and tamper can be prevented. At the same time, each block can be directly verified by the associated timestamp without requiring additional data to minimize the cost of integrity checking, and OTP encryption scheme can pre-computes keystream to remove most encryption latencies.