In the early 2000s, researchers discovered that by briefly altering the voltage or clock frequency of an Irdeto smart card (known as "glitching"), they could force the CPU to skip a security check. This would dump the card’s internal memory, revealing the . This method was famously used to compromise Irdeto 1 and early Irdeto 2 systems.
: Keys can be updated over-the-air (OTA) to address security incidents or enable new premium features without replacing hardware . irdeto keys
For researchers and historians, however, Irdeto keys represent a fascinating chapter in the evolution of cryptography. Studying the failed Irdeto 1 cipher is a great case study in why are dangerous—Kerckhoffs's principle states a system should be secure even if everything except the key is known. Irdeto 1 failed that test. In the early 2000s, researchers discovered that by