Get the latest tech news
Fault Injection – Down the Rabbit Hole
Intro This series of articles describes […]
The term glitching refers to an external behavior that causes a chip to enter an anomalous state, allowing for the creation of a fault, which is an internal error that enables the execution of something different from what was expected. According to the reference manual, we can use GPIO_OUT_W1TS_REG to activate the pin and GPIO_OUT_W1TC_REG to deactivate it, thus eliminating a call and a series of unnecessary instructions that could cause problems during glitching. Instructions to attack The standard fault injection example uses loops or similar methods that do not allow us to understand in detail what is happening, thus it’s not an optimal approach.
Or read this on Hacker News
