Hi Simon, Thanks for the observation. It not easy to say from a distance what the performance problem could be. Do you have a little test program using this library that shows the performance difference? It would be very helpful for us to diagnose the issue further.
Thanks, Florian Den 22. mar. 2011 15.13 skrev Simon <[email protected]>: > Hello everyone, > > I have been playing around with JavaScript AES CBC encryption of a > 25MB video file. I encrypt the file on the server with PHP which takes > only a few seconds. I then use the library slowAES [http:// > code.google.com/p/slowaes/] to decrypt the file in the browser. The > decryption took 5 minutes. I profiled the code with the chrome > developer tools and found out that the function "mixcolums" was be far > the slowest. I had a look at this function and found out, that the > Galois Field multiplications could also be done by table lookup which > should be much faster. So I changed the code to do the look-up instead > of calculation everything new everytime. But the code was actually > slower then before. Now I would like to know: Why is this? Should > array look-up not be the fastest method of doing things? > > Kind regards, > Simon Heckmann > > -- > v8-users mailing list > [email protected] > http://groups.google.com/group/v8-users > -- v8-users mailing list [email protected] http://groups.google.com/group/v8-users
