At GOMACTech 2022, Scott Best, director of anti-tamper security technology at Rambus will present “Advanced Packaging Technique to Mitigate Fault-Injection Attacks.” Cryptographic processing can be disrupted by state-of-the-art fault-injection techniques. Such attacks can result in recovery of secret key material by an adversary, and even allow execution of adversarial code. While circuit techniques can be implemented to mitigate these attacks, such techniques are less effective in protecting circuits built with large geometry transistors, used for example in radiation-hardened applications.
One limitation of these fault-injection attacks is that the lasers employed use the infrared spectrum, which is transparent to silicon but absorbed by the ordinary metal used for circuit-interconnect and power distribution. For that reason, fault-injection attacks typically assault a circuit from the back, substrate-side of the chip, where there is typically no metallization. Scott Best will present a reliable, low-cost anti-tamper technique that adds fault-injection shielding metal to the reverse-side of a chip. The proposed techniques utilize modern packaging technology that is fully compatible with and non-disruptive to all semiconductor wafer-processing foundries.
Also at the conference, Rambus will be highlighting two new products aimed at serving the mission-critical requirements of defense applications. The first is the Root of Trust RT-1660, a fully programmable, FIPS 140-2 and FIPS 140-3 compliant root-of-security core offering security by design for U.S. Defense applications. The RT-1660 protects against a wide range of hardware and software attacks with state-of-the-art anti-tamper security techniques. The RT-1660 offers superior tamper resistance through the implementation of Differential Power Analysis (DPA) countermeasures and advanced fault injection attack (FIA) protections.
In addition, Rambus will showcase a new Inline Memory Encryption (IME) Engine. The IME Engine protects critical data with just-in-time encryption, decryption and authentication for all memory read and write requests between a host processor and its attached DRAM memory. This new Rambus product offering was developed and marketed as the “Immunity IME” by Idaho Scientific, a long-term technology partner with Rambus in the U.S. Defense community.