protection of keys against modification attack

摘要

In 1997, Anderson and Kuhn described an attack against tamper-resistant devices wherein a secret key stored in EEPROM is compromised using a simple and low-cost attack. The attack consists of setting bits in the EEPROM Using low-cost probes and observing the effect on the output of the device. These attacks are extremely general, as They apply to virtually and cryptosystem. The objective of the present work is to explore cryptographic techniques With the goal of raising the cost (in terms of time and money) of carrying out the EEPROM modification attack by Class I attackers, at least to a point where it is as prohibitive as the cost of purchasing more expensive equipment.