It and describes several general security strategies based on the IEEE 1687 Internal JTAG (IJTAG) standard that can overcome these problems.
“There is no industry standard for making a circuit board’s test and debug facilities secure,” said Al Crouch, chief technologist, embedded instrumentation methodologies and IJTAG, for ASSET and one of the co-authors of the eBook. “As a result, any board test security is usually derived from the security contained in the chips on a board and each chip has its own security methods. Board-level operations may have some encryption for security purposes, but the TAP still represents a vulnerability that hackers and counterfeiters can exploit unless security measures are designed into the circuit board.”
Titled “JTAG | IJTAG Semiconductor and Board Test Security”, the new eBook is available for free.