Maxim adds AES encryption to secure smart grids
Maxim Integrated Products has added AES-level secure encryption to smart grid communciations.
The supplier has introduced a tamper-reactive cryptographic-node controller with two hardware Advanced Encryption Standard (AES) engines for more secure encryption.
Smart grids provide communication at multiple points in the grid, so utilities companies can measure electricity consumption, isolate faults, control demand, and inform their customers about pricing and consumption.
However, this level of communications can open up this critical infrastructure “to a cyber attack”, said Maxim.
The device, the MAX36025 can be placed at the access point/data concentrator in a smart grid network to add security to these crucial points of data aggregation.
Its two hardware AES engines move encryption into hardware which raises the levels of security.
The two AES engines can be used on independent channels to protect different networks or used simultaneously on the same channel for double encryption.
Security is provided by on-chip secure key storage (in the nonimprinting memory) and non-imprinting memory with high-speed tamper-reactive erase.
A temperature sensor with a proprietary rate-of-change detector to sense extreme changes in temperature that signal a physical attack.
The secure nature of the MAX36025 requires a nondisclosure agreement (NDA) before release of data sheet or other product information.