You are safe with ICTK

We Protect Your Values!

2017 Big Success at CES, MWCRAGuard: A Hardware Based Mechanism for Backward-Edge Control-Flow Integrity


Control-flow integrity (CFI) is considered as a general and promising method to prevent code-reuse attacks, which utilize benign code sequences to realize arbitrary computation. Current approaches can efficiently protect control-flow transfers caused by indirect jumps and function calls (forward-edge CFI). However, they cannot effectively protect control-flow caused by the function return (backward-edge CFI). The reason is that the set of return addresses of the functions that are frequently called can be very large, which might bend the backward-edge CFI. We address this backward-edge CFI problem by proposing a novel hardware-assisted mechanism (RAGuard) that binds a message authentication code to each return address and enhances security via a physical unclonable function and a hardware hash function. The message authentication codes can be stored on the program stack with return address. RAGuard hardware automatically verifies the integrity of return addresses. Our experiments show that for a subset of the SPEC CPU2006 benchmarks, RAGuard incurs 1.86% runtime overheads on average with no need for OS support. 

To read more:

Introduction to vertical business areas 

Go >

Introduction to vertical business areas 

Go >

Introduction to vertical business areas 

Go >

We do these things.
PUF Technology

What is PUF?

Unique Inborn ID 
(PUF, Physically Unclonable Functions)

•Silicon Inborn ID using the randomness of passive device generation in the semiconductor manufacturing process

• As a Physical ID created with physical characteristics, it is fundamentally impossible to falsify or duplicate the value

• Since each semiconductor chip generates a different unique ID, it is called a semiconductor fingerprint.

PUF Advantages

AS Via PUF provides unique Silicon Inborn ID characteristics,  It provides the Root of Trust (RoT), the source of all trust

•Via PUF guarantees stability that is impervious to 
various types of hacking attacks.

•Via PUF is a method of forming via holes between 
metal layers during semiconductor processing.

•As a passive device method, it is an innovative method
that solves all the problems of existing technologies.

•PUF that satisfies all randomness, homeostasis and 
security •Unlike other technologies, no error correction
circuit (ECC) is required.

What you can do with PUF

VIA PUF can be applied to various IoT devices and solutions  that require strong security.

•ICTK's security chip generates a key pair of a private key and a public key in the security chip using an algorithm called ECC based on the key generated by PUF.

•ICTK's PUF security chip provides encrypted RAM (Random Access Memory) and encrypted eFlash (flash memory) inside.

•ICTK's security chip can be operated in PQC (Post Quantum Cryptography), a quantum security algorithm.

ICTK's security chip is the most powerful existing method to provide the Root of Trust function based on PUF.