VLSI Path delay test for production –
limited time
-Test time must be short
-only top 20 or so
critical paths tested
-Synopsys and other
tools generate tests for all paths
-On a sample/lot basis
looking for trojans, full tests can be applied
- Even if tests take an hour – still valid
means of test.
- More work however to validate tests
-Attacker must
Find and Target
non-critical paths,
Slow-speed paths