1.On the face of it, there are two basic options: first, resuscitate the bank as a viable, profit-making institution until the taxpayer is repaid and Northern Rock returned to the private sector; or, second, run the Rock down, selling its assets and collaring the cash for the publicpurse.
2.This paper also puts forward a signature scheme of electronic purse, in this scheme, the electronic purse has a public key which has been signed by the bank, so the electronic purse can produce valid signatures, furthermore, anyone can not track the lawful users.
