Table 3 The online banking customer credentials

UID₁

h(PWD₁)

BB₁

E_B(k₁)

Valid/Invalid

UID₂

h(PWD₂)

BB₂

E_B(k₂)

Valid/Invalid

….

….

….

….

….

UID_i

h(PWD_i)

BB_i

E_B(k_i)

Valid/Invalid

….

….

….

….

….