Identify the following security primitives as either PUF or TRNG. Briefly justify your choice. (a) Figure 12.21A shows that the intra-chip hamming distance = 50% of the output of a security primitive...

Identify the following security primitives as either PUF or TRNG. Briefly justify your choice. (a) Figure 12.21A shows that the intra-chip hamming distance = 50% of the output of a security primitive X. That is, for the same primitive/device, the output bits are in average 50% different for the same environmental condition and same input pattern. (b) Figure 12.21B shows that the inter-chip hamming distance = 50% of the output of multiple security primitives of the same type Y. That is, for a pool of same primitive/device, the output bits are in average 50% different for different instances.