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- W2155718397 abstract "Cryptographic accelerators and security processors are often used in embedded systems in order to enable enhanced security without significantly impacting performance or power consumption. However, realizing the performance promised by them requires the design of efficient software architectures for crypto offloading (offloading cryptographic operations from a host processor). In this paper, we describe an efficient software architecture for IPSec crypto offloading on a state-of-the-art mobile application processor system-on-chip (SoC) that includes a programmable security processor. We consider both user-space and kernel-space implementations of IPSec, compare their performance, and identify factors that limit the efficiency of crypto offloading. We describe two optimizations, called protocol-level crypto offloading and adaptive crypto offloading, which further improve the performance of IPSec by (i) offloading higher granularity computations to reduce the crypto offloading overheads, and (ii) using crypto offloading judiciously based on the trade-off between the savings in processing cycles vs. the overhead of communication with the security processor. We measure the performance of our implementation of IPSec crypto offloading using a commercial network protocol stack on the mobile application processor SoC, under a wide range of workloads. Our results indicate that efficient crypto offloading can result in application-level improvements of up to 10.6X in data rate and up to 5X in latency, enabling IPSec to be used for emerging high-bandwidth and interactive mobile applications." @default.
- W2155718397 created "2016-06-24" @default.
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- W2155718397 date "2008-03-10" @default.
- W2155718397 modified "2023-09-23" @default.
- W2155718397 title "Efficient software architecture for IPSec acceleration using a programmable security processor" @default.
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- W2155718397 doi "https://doi.org/10.1145/1403375.1403656" @default.
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