Securing IoT-Based RFID Systems: A Robust Authentication Protocol Using Symmetric Cryptography

. 2019 Nov 1;19(21):4752. doi: 10.3390/s19214752

• Goal 1: $R_{i} \| \equiv t a g \overset{A I D_{T}}{⟷}$ Ri	• Goal 5: $R_{i} \| \equiv S_{j} \overset{A I D_{T}}{⟷}$ Ri
• Goal 2: $R_{i} \| \equiv t a g \| \equiv t a g \overset{A I D_{T}}{⟷}$ Ri	• Goal 6: $R i \| \equiv S_{j} \| \equiv S_{j} \overset{A I D_{T}}{⟷}$ Ri
• Goal 3: $S_{j} \| \equiv R_{i} \overset{A I D_{t}}{⟷}$ Sj	• Goal 7: $t a g \| \equiv R_{i} \overset{A I D_{T}}{⟷}$ tag
• Goal 4: $S_{j} \| \equiv R_{i} \| \equiv R_{i} \overset{A I D_{T}}{⟷}$ Sj	• Goal 8: $t a g \| \equiv R_{i} \| \equiv R_{i} \overset{A I D_{T}}{⟷}$ tag.

• Goal 1: $R_{i} \| \equiv t a g \overset{A I D_{T}}{⟷}$ Ri	• Goal 5: $R_{i} \| \equiv S_{j} \overset{A I D_{T}}{⟷}$ Ri
• Goal 2: $R_{i} \| \equiv t a g \| \equiv t a g \overset{A I D_{T}}{⟷}$ Ri	• Goal 6: $R i \| \equiv S_{j} \| \equiv S_{j} \overset{A I D_{T}}{⟷}$ Ri
• Goal 3: $S_{j} \| \equiv R_{i} \overset{A I D_{t}}{⟷}$ Sj	• Goal 7: $t a g \| \equiv R_{i} \overset{A I D_{T}}{⟷}$ tag
• Goal 4: $S_{j} \| \equiv R_{i} \| \equiv R_{i} \overset{A I D_{T}}{⟷}$ Sj	• Goal 8: $t a g \| \equiv R_{i} \| \equiv R_{i} \overset{A I D_{T}}{⟷}$ tag.