Flash
Memory: Theory and Applications
Security
Security is at the forefront of many applications,
and several Flash products are now equipped with two 64-bit OTP (one-time
pad) protection registers. These one-time programmable registers can be
used to increase system security. Intel factories program a unique, unchangeable
64-bit number into the OTP, and the customer as desired can program other 64-bit
register. Once programmed, the customer segment can be locked to prevent further
reprogramming. The OTP information can be used for manufacturing tractability
and/or a small-encrypted security key for system authentication.
Top
