Consider the following login protocol:User knows a password PUser knows a Hash function H$.)$ and has a mobile calculatorUser gives login name N to machineMachine generates a random number RMachine gives R to userUser computes X $=$ H$($P$)$ H$($R$)$User gives X to machineMachine uses N to obtain P from a password tableMachine computes Y $=$ H$($P$)$ H$($R$)$ If X $=$ Y then machine allows loginExplain what is wrong with it and how can it be broken. $[5$ Marks$]$