Re: [Openvpn-users] cipher speed vs. security

[Mathias S. <ma...@ni...>]

On Wed, 16 Jun 2004, Jon Bendtsen wrote:

> Den 16. jun 2004, kl. 20:55, skrev James Yonan:
>
>> In my own benchmarking, I've seen that 80% or more of OpenVPN's CPU
>> utilization is taken up by crypto operations (i.e. encrypt, decrypt, and 
>> HMAC).
>> 
>> This is easily tested as such (on *nix) with 2 machines on the same 
>> physical
>> network which is firewalled from the internet:
>> 
>>   time openvpn [options] --secret key --cipher x
>> 
>> Transfer a large file by FTP, then (on both machines):
>
> good idea :) But i think i will just believe your notion that 80+ % is 
> crypto.

So, how does all the values we have seen here about the encryption speed 
compare to the accual maximum transmission rate you can achive with 
openvpn?

I mean, what factor should you multiply the measured encryption speed 
(openssl speed) with, to get an approximation of the accual tranmission 
speed you can expect to get? 0.8?

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