RE: CPU usage and FPGA support

2010-03-11 Thread Cheng, Weidong
org] On Behalf Of Mark H. Wood Sent: Thursday, March 11, 2010 6:08 AM To: openssl-users@openssl.org Subject: Re: CPU usage and FPGA support Notice a few things: o The OP asked about reducing CPU load, but the answers all talk about making encryption faster. These are not the same thing. Off

Re: CPU usage and FPGA support

2010-03-11 Thread John R Pierce
Mark H. Wood wrote: Notice a few things: o The OP asked about reducing CPU load, but the answers all talk about making encryption faster. These are not the same thing. Offloading encryption might *reduce* throughput of the encrypted streams, and yet free up CPU time to do other things

Re: CPU usage and FPGA support

2010-03-11 Thread Mark H. Wood
Notice a few things: o The OP asked about reducing CPU load, but the answers all talk about making encryption faster. These are not the same thing. Offloading encryption might *reduce* throughput of the encrypted streams, and yet free up CPU time to do other things. Encrypted commun

Re: CPU usage and FPGA support

2010-03-11 Thread .
We are sorry for the duplicate message. Thank you all for the good answers. First of all we have to take a decision of either to use dropbear(embedded ssh2 protocol,using libtomcrypt libaries) or OpenSSH(using OpenSSL libaries). We have looked at the two libaries and it looks like libtomcrypt migh

CPU usage and FPGA support

2010-03-11 Thread .
Hello everybody. We are two students doing a project about accelerating encryption on an embedded system. This system is build upon a ARM processor (180MHz) and an FPGA. We have built and implemented OpenSSH into the system (running Linux), and tested the AES encryption in software. The task is no

Re: CPU usage and FPGA support

2010-03-10 Thread John R Pierce
Ahmad Raif Mohamed Noor Beg wrote: If we are talking about a PC which uses x86 hardware (Intel, AMD etc), yes with the Gigahertz speed, using software will be faster than using hw accelerator, in this case FPGA but the original question was I believe usage in an embedded environment and using

RE: CPU usage and FPGA support

2010-03-10 Thread Ahmad Raif Mohamed Noor Beg
accelerator should make sense - right ? From: owner-openssl-us...@openssl.org [owner-openssl-us...@openssl.org] On Behalf Of John R Pierce [pie...@hogranch.com] Sent: Thursday, March 11, 2010 9:26 AM To: openssl-users@openssl.org Subject: Re: CPU usage and FPGA

Re: CPU usage and FPGA support

2010-03-10 Thread John R Pierce
. wrote: So we guess the main question is, if we design an AES cryptocore(FPGA) how do we ensure that the cpu utilization will drop? This is more important than getting a higher throughput the hardest part will be getting data in and out of your engine faster than the CPU can just process it

Re: CPU usage and FPGA support

2010-03-10 Thread Dr. Stephen Henson
On Wed, Mar 10, 2010, . wrote: > Hello everybody. > > We are two students doing a project about accelerating encryption on an > embedded system. This system is build upon a ARM processor (180MHz) and an > FPGA. > We have built and implemented OpenSSH into the system (running Linux), and > tested

Re: CPU usage and FPGA support

2010-03-10 Thread Michael S. Zick
On Wed March 10 2010, . wrote: > Hello everybody. > > We are two students doing a project about accelerating encryption on an > embedded system. This system is build upon a ARM processor (180MHz) and an > FPGA. > We have built and implemented OpenSSH into the system (running Linux), and > tested t

CPU usage and FPGA support

2010-03-10 Thread .
Hello everybody. We are two students doing a project about accelerating encryption on an embedded system. This system is build upon a ARM processor (180MHz) and an FPGA. We have built and implemented OpenSSH into the system (running Linux), and tested the AES encryption in software. The task is no