QUIDDIKEY Hardware IP Family - Intrinsic ID

SRAM PUF - Keys from Silicon Characteristics

SRAM Physical Unclonable Functions or PUF use the behavior of standard SRAM memory,

available in any digital chip, to differentiate chips from each other. They are virtually

impossible to duplicate, clone or predict. This makes them very suitable for applications such

as secure key generation and storage, device authentication, flexible key provisioning and

chip asset management.

Due to deep sub-micron process variations in the production process, every transistor in

SRAM cells has slightly random electric properties. This randomness is expressed in the

startup values of ‘uninitialized’ SRAM memory. These values form a unique chip fingerprint,

called the SRAM PUF response.

QUIDDIKEY®

The SRAM PUF response is a noisy fingerprint, and turning it into a high-quality and secure

key vault requires further processing. This is done with the QUIDDIKEY logic. QUIDDIKEY

reconstructs exactly the same cryptographic key every time and under all (environmental)

circumstances. It generates an Activation Code which, in combination with the SRAM startup

behavior, is used to reconstruct an intrinsic PUF key for use by the customer. When the key is

not needed anymore, it can be removed from memory. When it is needed later it can be

reconstructed again. The intrinsic PUF key can be used as a root key to wrap and manage user

keys. QUIDDIKEY is available in 3 optimized variants:

QUIDDIKEY - LIGHT Low chip footprint device-unique key creation

QUIDDIKEY - FLEX Device-unique key creation, derivation, wrapping and management

QUIDDIKEY - FLEX-E Device-unique key creation, derivation, wrapping and management, including elliptic curve private key generation

SRAM PUF Benefits

• Use standard SRAM memory

• Device-unique high quality keys

• No secrets when power is off

• No key material programmed

• Flexible and scalable

Applications

• Secure Key Storage

• Authentication

• Flexible Key Provisioning

• Anti-Counterfeiting

• HW-SW Binding

• Supply Chain Protection

Operating Specifications

• 256 or 128-bit key entropy

• Highly reliable across large range

of operating environments and

on every technology node

• Lifetime > 25 years

• Requires uninitialized SRAM

Certifications

• EMVCo, Visa

• CC EAL6+

• US and EU Governments

CREATE. WRAP. MANAGE. SRAM PUF-based secret keys

QUIDDIKEY® Hardware IP Family

Secure: QUIDDIKEY has great security advantages compared to traditional key storage methods. Each chip has its

unique unclonable key. SRAM bits settle in the one or zero state in a non-deterministic way that not even the

manufacturer can duplicate. Furthermore, because the key is not permanently stored, it is not present when the device is

inactive (no key at rest) and hence cannot be found by an attacker who is opening up the device.

Low Cost: Keys are extracted from the chip. No keys have to be programmed in NVM or OTP.

Flexible & Scalable: Keys can be provisioned at any suitable stage in the production process. The low footprint and

flexible design make QUIDDIKEY suitable for most semiconductor platforms, and scalable towards billions of devices.

Operating Conditions

QUIDDIKEY operates reliably over a wide range of applications and operating conditions:

• Qualified semiconductor technology nodes ranging from 180nm down to 14nm

• Semiconductor processes include low power, high speed, and high density

• Temperature range for PUF reading from -50°C to 150°C [-58°F to 300°F]

• Voltage supply variation +/- 20%

• Lifetime > 25 years

Deliverables

QUIDDIKEY hardware IP is easily integrated in any semiconductor design or firmware. Standard deliverables include:

• RTL Netlist including: test benches, product specification, integration manual, BIST

• Support for APB and AHB interfaces, health checks, security countermeasures

• Product specifications and integration manual

Hardware IP Key Entropy (bits)

Footprint (Gates)

PUF SRAM (KB)

Reconstruction Speed (Cycles)

QUIDDIKEY - LIGHT 128 12k 0.5 100k

256 13k 1.0 100k

QUIDDIKEY - FLEX 128 40k 0.5 90k

256 44k 1.0 90k

QUIDDIKEY - FLEX-E 128 45k 0.5 100k

256 50k 1.0 100k

[email protected] www.intrinsic-id.com

© 2017 Intrinsic ID. QUIDDIKEY®, and designated brands included herein are trademarks of Intrinsic ID. All other trademarks are the property of their respective owners.