Yorkshire Bank took place in the bank's heartland and many miners were customers, having been encouraged by the National Coal Board to have their pay mandated to a bank account. In 1990, the National Australia Bank Group acquired the bank from the consortium of owning banks which, after mergers and acquisitions, were the National Westminster Bank, (holders of 40%), Barclays Bank (32%), Lloyds Bank (20%), and Royal Bank of Scotland (8%). The price paid was £1 billion and the bank joined National Australia Bank's other European businesses, Clydesdale Bank (Scotland) and Northern Bank (which operated in both jurisdictions in Ireland). In May
Piggy bank cryptography Piggy bank cryptography Piggy bank cryptography is a digital emulation of a piggy bank. It uses an encrypted message as a carrier into which valuable secrets can be inserted and later recovered by the person who issued the message. A typical protocol works as follows: In this scheme, Bob does not necessarily require a public key from Alice, although he does require her to sign her note in such a way that he can verify her authorship. Piggy bank cryptography has been proposed for authenticating parties to detect man-in-the-middle attack. The piggy bank paradigm can be used to implement asymmetric