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Overview:

This paper presents a minimal extension to the BSD socket layer that can improve the performance of application-level security protocols, such as SSH or SSL/TLS, by 10%, when hardware cryptographic accelerators are available in the system. Applications specify what cryptographic transforms must be applied to incoming and outgoing data frames, and such processing is applied by the operating system itself (exploiting hardware accelerators) when the application sends or receives data. Under this scheme, user can reduce the number of system calls and context switches by 50%, and the amount of data copying by 66%. The paper describes the prototype implementation for the OpenBSD system and quantify its performance implications.

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Format:PDFSize:77 KB
Date:Jan 2008
Pages:6

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