Quote from: anfedorov on July 15, 2012, 09:59:16 AM

Quote from: flatfly on July 15, 2012, 09:16:34 AM

Real nice!!
I like the streamlined foolproof GUI.
Great initial version.

2 things I've noticed:

- Options page is blank for me, not sure why... (I only see the "Options" heading and that's it)

- Initial seed stretching is much slower than in Python... I was hoping that Chrome's awesome JS engine would be faster at this, but well. Or perhaps you're generating more than 5 addresses?

Thanks!

I'm saw the Options page show up blank once as well when testing on my older laptop (with SC2 running in the background for slowness). Not sure what's causing it, but I'll refactor the JS on the Options page to fix it ASAP.

Hmm... Can't post a screenshot as it's now working fine, after uninstalling / re-installing the extension! Very nice and clearly laid-out option page, by the way.

Quote

The initial stretching doesn't include generation of the addresses (which is relatively quick). It's applying SHA256 to the seed 100k times to get the master private key (which is used to generate the private keys of addresses). I think this is slower because Python uses SHA256 implemented in a C library, whereas the extension uses a JS implementation. I don't think there's anything I can do to speed it up, since I want to be compatible with the Electrum client, so I tried to make the UI as clear as possible. Since this only needs to be done once when a wallet is set up, I think I'm satisfied with the current implementation.

Thanks for the explanation. I agree the one-time seed stretching delay is reasonable (about 45 seconds on this old laptop).