Solving the collision problem of DC Nets – PLLS 2016

Home / Cryptography / Solving the collision problem of DC Nets – PLLS 2016

Jeroen van de Graaf

The international workshop “Protection of Long-Lived Systems” was held for the first time in Darmstadt from 18th to 19th July, 2016. It has been part of the Security and Privacy Week 2016 (SPW16).

With increasing digitization, the number of long-lived systems and services increases rapidly. For example, digital archives such as genomic databases will have to operate for many decades or even centuries. The protection of such long-lived systems against security risks is indispensable.

Most of the security technology used today appears to be inappropriate for protecting long-lived systems. This is particularly true for cryptography. Keys chosen today will be too short in the future or they may leak over time. Researchers may find new attacks against schemes that are considered secure today. Therefore, the protection of long-lived digital systems is an important scientific and technological problem.

Several researchers have proposed partial solutions. For example, there are security models for long-lived systems; there is quantum key distribution and one-time pad encryption, which offer information theoretic protection of the confidentiality of data in transit; there are time-stamp-based solutions that ensure long-term integrity of data in archives. However, there is no comprehensive solution of the problem yet.

The workshop will bring together researchers from the relevant technology and application areas to discuss important scientific challenges that need to be addressed in order to find theoretically sound and practical solutions that provide protection of long-lived systems.

The video captures of the talks at PLLS 2016 are now available at

Jeroen van de Graaf – Solving the collision problem of DC Nets from CROSSING on Vimeo.

Leave a Reply

Your email address will not be published. Required fields are marked *