Re: [rtcweb] SRTP requirement - wiretapping (Re: Let's define the purpose of WebRTC)

Eric Rescorla <ekr@rtfm.com> Thu, 10 November 2011 05:54 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Wed, 9 Nov 2011 21:53:46 -0800
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To: "Ravindran, Parthasarathi" <pravindran@sonusnet.com>
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Subject: Re: [rtcweb] SRTP requirement - wiretapping (Re: Let's define the purpose of WebRTC)
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On Wed, Nov 9, 2011 at 9:40 PM, Ravindran, Parthasarathi
<pravindran@sonusnet.com> wrote:
> Eric,
>
> Of course, the bandwidth requirement is range from 4MB/s to 16MB/s based on deployment but the point to be noted is that the device is not doing encryption/decryption alone.

Of course not, but based on the data I just provided and these
bandwidth estimates,
encryption would consume on the order of 5-10% of a relatively modest machine.
Again, do you have any actual measurements that show that crypto is a serious
performance problem?

-Ekr