I'm not sure why I'm explaining this since your previous post in this very same thread was a link to a thread that probably explains the same,
I'm not sure why I have to explain to you it doesn't.
I felt bad about not following the link to confirm even though I thought I had read that thread before, then I followed the link...
A 12 characters mixed with numbers and simbols, then converted to sha256 2 times, and then generating a private key with that hash its unsecured? Who, so all the entire bitcoin system is unsecured.
Hi Wolf Rainer,
Please read carefully the following article:
http://www.palkeo.com/code/stealing-bitcoin.htmlWe can see how they were able to find many active wallets by generating addresses with a dictionnary. They actually found your address by using the passphrase "alfanumerico".
I hope this answers your questions!
That URL includes a brainwallet section that tells the same information I gave, albeit in a more vague/indirect manner. This is why I felt like it was in that thread, although I suppose I can see why you didn't.
the end result is the same: a user thinks they are generating their own, private address and they're not and their funds get stolen.
This is true, and in that regard, the answer to the question the title of this topic poses is they already can, but only when they aren't targeting a specific key and users are bypassing the inherent security in randomly generated keys.