An Enhanced Lightweight Dynamic Pseudonym Identity Based Authentication and Key Agreement Scheme Using Wireless Sensor Networks for Agriculture Monitoring

. 2019 Mar 6;19(5):1146. doi: 10.3390/s19051146

Step 1:

The

U_{i}

inserts his/her own smartcard into card reader, inputs

I D_{i}

P W_{i}

and imprints his/her biometric

F_{i}

on sensor device. Now, the card reader computes

R e p (F_{i}

P_{F})

X_{F}^{*}

R P W_{i}^{*}

h (P W_{i} ‖ X_{F}^{*})

{[h (A_{i} ‖ X)]}^{*}

B_{i} \oplus h (I D_{i} ‖ R P W_{i}^{*})

D_{i}^{*}

h (A_{i}^{*} ‖ R P W_{i}^{*} ‖ I D_{i})

and verifies if

D_{i}^{*}

equals

D_{i}

. If the verification holds, the system continues to process the request. Otherwise, the session is terminated.

Step 2:

Now,

U_{i}

generates a random nonce

R_{U}

, computes

D I D_{i} = (I D_{i} ‖ R_{U}) \oplus h (h (A_{i} ‖ X) ‖ T_{1})

and

M_{1} = h (R_{U} ‖ I D_{i} ‖ T_{1} ‖ h (A_{i} ‖ X))

, then send

{A_{i}, D I D_{i}, T_{1}, M_{1}, I D_{S N_{j}}, I D_{G W N_{j}}}

B S

via public channel.