Interesting comment from the lead dev of Ethereum (a new cryptocurrency):
> aside from cryptocurrencies, there really is no other situation where the fact that you can take a valid signature and turn it into another valid signature with a different hash is a significant problem, and yet here it’s fatal.
> aside from cryptocurrencies, there really is no other situation where the fact that you can take a valid signature and turn it into another valid signature with a different hash is a significant problem, and yet here it’s fatal.
http://blog.ethereum.org/2014/02/09/why-not-just-use-x-an-in...