Re: [PMOL] Re: A question about [Fwd: WG Review: Performance Metrics atOther Layers (pmol)]

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Joe,

This discussion seems to have moved from a discussion of crypto use on home/office computers, to use in routers. There is no good motivation for other than edge (CPE?) routers to make use of IPsec for subscriber traffic. We know, from discussions with operators, that use of IPsec to protect BGP is a non-starter, because of where in the router the processing would be done (given current router designs). In any case, use of IPsec by routers is a very different topic that use in home/office computers and ought not be brought into this discussion.

As for the original topic, yes, performance hits come in various flavors when we discuss crypto protocol use. For example, there was a good paper at NDSS a few years ago that showed how "marshalling" of data in SSL implementations was a very big part of the performance hit. Nonetheless, the bottom line is that for mainstream users, most of us are not convinced that performance is the primary reason for not using crypto.

Steve

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