Palmprint Based Multidimensional Fuzzy Vault Scheme

Algorithm 1

Locking vault.

(1)  𝑋,𝑉←𝜙;

(2)  𝑠←𝜅;

(3)  𝑝←𝑠;

(4)  {𝑓𝑣_𝑖}^𝑡_𝑖=1^{featurevector}_mappingFV;

(5)  {𝑓_𝑖,𝑓_𝑖∈𝑓𝑣_𝑖}^𝑡_𝑖=1^{selectingfeaturesfor}_{polynomialprojection}{𝑓𝑣_𝑖}^𝑡_𝑖=1;

(6)   for  𝑖=1 to 𝑡  do

(7)   𝑝(𝑓_𝑖)^𝑝⃖𝑓_𝑖;

(8)   𝑉←𝑉∪(𝑓𝑣_𝑖,𝑝(𝑓_𝑖));

(9) end

(10) 𝐿=length(𝑓𝑣_𝑖)

(11) for  𝑖=𝑡+1 to  𝑟  do

(12) 𝑥𝑣_𝑖∈_𝑈𝑅^𝐿+1;

(13)   𝑉←𝑉∪𝑥𝑣_𝑖

(14) end

(15) reorder  vectors  in  𝑉;

(16) output  𝑉;