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Intrinsic ID unveils NIST-certified Zign RNG for IoT devices
Intrinsic ID, a leading provider of Physical Unclonable Function (PUF) security IP for embedded systems, has announced the Zign RNG for IoT devices.
This new offering will enable IoT chip providers and device makers to establish a high-security random number generator in software enabling it to be deployed on devices even after silicon fabrication to ensure a true source of randomness for IoT devices.
Random number generators (RNGs) are essential for cryptographic applications and form the foundation of security systems. For IoT devices, an RNG is generally implemented by incorporating hardware peripheral controllers, which are proving to be imperfect as a source for real randomness because they start with a deterministic input.
A report from Bishop Fox has shown that critical vulnerabilities have been disclosed in hardware random number generators used in billions of Internet of Things (IoT) devices whereby it fails to properly generate random numbers, undermining their security and putting them at risk of attacks.
Intrinsic ID’s Zign RNG extracts a true random seed harvested from noise in the SRAM PUF enabling IoT device makers to ensure confidentiality, authentication, and communication integrity. This makes Zign RNG the first embedded software implementation with a hardware entropy source option that does not have to be loaded at silicon fabrication.
Zign RNG can be installed later in the supply chain, and even retrofitted on already-deployed devices providing, what the company describes as, a “brownfield” deployment of a cryptographically secure NIST-certified RNG.
“RNGs extract randomness from hardware sources but some sources are better than others. With Zign RNG, randomness is extracted from a very strong source – the random patterns that appear in SRAM as a chip starts up. As a result, Zign RNG provides the benefits of a hardware entropy source without the need to make any hardware modifications and requires only minimal computing resources and memory which are limited on IoT devices,” said Pim Tuyls, CEO of Intrinsic ID.
The Zign RNG product is compliant with the NIST SP 800-90 standard. It implements a deterministic random bit generator (DRBG) as specified in NIST SP 800-90A. This means that a strong RNG solution in software is created on top of an existing SRAM memory.
Zign RNG has passed all standard national institute of standards and technology (NIST) randomness tests and is a NIST/FIPS-compliant software solution that addresses the issue of Hardware RNG peripherals used in IoT devices running out of entropy and leaving the device vulnerable.