Post-Quantum Cryptography

Security - Post-Quantum Cryptography

Quantum computers will be capable of breaking key cryptographic algorithms used in today's digital communications. For this reason, efforts are underway to develop, standardize, and implement post-quantum cryptography algorithms that are resistant to attacks by quantum computers.

The Fraunhofer Institute for Secure Information Technology SIT conducts research on and implements post-quantum methods, particularly for use in resource-constrained applications on embedded systems—for example, in automotive technology and Industry 4.0—but also for traditional Internet applications such as e-commerce and online banking. The goal of Fraunhofer SIT is to support targeted and application-oriented research and to translate the results of academic research into industrial applications. The institute evaluates the risks and trust models of such methods and supports companies in

• the development of efficient post-quantum algorithms,
• the secure implementation of post-quantum algorithms,
• the determination of application-relevant security parameters,
• the testing and evaluation of existing systems and solutions, and
• the development and implementation of migration strategies.

Cryptoagility is an essential principle for keeping systems and applications secure and up-to-date over the long term. This means that wherever cryptography is used, it must be possible to quickly and easily replace or update the cryptographic methods. Systems that are adaptable at any time are therefore considered cryptoagile. Fraunhofer SIT conducts research on cryptoagility and provides recommendations for action.

Security - Quantum Key Distribution

In quantum key distribution, the goal is to generate a cryptographic key between two parties whose confidentiality is based not on the complexity of mathematical problems, but on physical principles. Thus, a QKD system is not subject to the aging process of conventional cryptography and simultaneously avoids the risk of new cryptanalytic attacks.

Fraunhofer SIT is working both on the development of tools and systems for QKD and on the secure implementation of QKD in practical systems. Maintaining conceptual security throughout the implementation process presents new challenges for system integrators, and Fraunhofer is actively contributing to solving these challenges.