[Ipsec] IPSec performance implications / some results

["SHAIKH, Siraj" <sshaikh@glos.ac.uk>]

This is with response to Mathias' post about any quantitative work done in the performance area. I would like to share some results that I have obtained very recently for some tests I carried out using IPSec on the Win2k platform. 

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Here are the results. There are some interesting figures which I wish to seek some help for. 

IPSec Processing (kbps)	

Encryption	Authentication	Software supported	Hardware supported	Gain(%)
DES 64-bit 	SHA-1 160-bit 	3154.88 		3568.83 		13.12
DES 64-bit 	MD5 128-bit 	2635.37 		2978.04 		13.00
3DES 192-bit 	SHA-1 160-bit 	2348.47 		2548.60			8.52
3DES 192-bit 	MD5 128-bit 	2543.63 		2668.04 		4.89

Average improvement (due to dedicated hardware) 9.88
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It is interesting to note that MD5 is faster than SHA-1 when used with 3DES but not when used with single DES? Comments welcome!


Siraj





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