Maxim's ChipDNA increases security in IoT applications

Maxim introduced the MAX32520 secure microcontroller that uses a tamper-proof PUF key for flash encryption

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Maxim Integrated Products introduced the secure Arm Cortex-M4 ChipDNA MAX32520 microcontroller that uses a tamper-proof PUF key for flash encryption, secure root-of-trust booting, and serial flash emulation.

The physical security of the PUF key avoids the need for a battery to allow active destruction of the system's secret keys when under attack, while Flash encryption via PUF protects sensitive information with encryption keys that resist even advanced and indiscreet physical analysis. Based on an advanced process node, this microcontroller offers advanced security features, a 120 MHz ARM Cortex M4 processor and plenty of memory.

The most advanced security technology

"Threats to IoT systems are becoming more advanced and the tools to attack systems are moving from academia to open source every day," said Kris Ardis, executive director, Micros, Security and Software Business Unit at Maxim Integrated. "The MAX32520 with ChipDNA is built around the most advanced security technology and targeted at IoT applications, will protect data and IP and has the technology against tomorrow's system threats."

As IoT applications continue to proliferate, large numbers of devices are deployed in uncontrolled and hostile areas, making them more vulnerable to physical attacks, more sophisticated than software threats, characterised by poor cryptographic implementations or predefined password attacks. Designers need advanced system defences for their critical applications, where exposure of secret keys could destroy networks, ruin reputations, dismantle companies and even negatively affect people's lives.

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