I'm Henrich C. Pöhls.

IT-Security Researcher, Standards Lover and Integrity Evangelist.

Picture Portrait of Henrich C. Poehls

Henrich C. Pöhls

Henrich C. Pöhls received his graduate diploma in computer science (Dipl. Inf.) from the University of Hamburg and additionally holds an M.Sc. in Information Security from Royal Holloway University of London. Ever since the late 1990s he was interested in IT security. Over a decade, since 2004, he is doing academic research: In 2004 he became a Research Assistant to Prof. Joachim Posegga, first at University of Hamburg and since 2008 at the University of Passau. He always enjoys pointing out the difference between information security, lets say encrypted communication, and practice, e.g. setting up openvpn. Thus, he devised and also delivered for many years a hands-on class at university and was teaching students how to apply theoretic concepts of computer and information security in practice. Henrich C. Pöhls current research focus lies on practical applications and legal implications of advanced digital signature schemes, such as malleable signatures. He has authored and co-authored many academic publications, especially on the topic of tailoring cryptographic signature primitives for making them legally compliant and making their privacy enhancing features suitable for an application in various domains ranging from supply chain documents, to data from the Internet-of-Things, to the cloud. He is keen on interdisciplinary work especially in the field of cryptography, software development and law, as he thinks the more gaps between those three worlds can be bridged the more sound (=safe, secure and legally compliant) ICT-enhanced products and environments like smarthomes or smartcities become. Henrich C. Pöhls leads the security work in several third party funded collaborative research projects: In ReSCUeIT he planned web services allowing the exchange authentic but trade-secret preserving documents in food supply chains; in the RERUM project he signed messages exchanged between the smart things in the Smart City, but allowed privacy enhancing redactions to protect the citizens' privacy rights, i.e. securing messages already for the device-to-device communication in the Internet-of-Things; in the PRISMACLOUD project he advances malleable signatures to become software libraries easy-to-use for developers in cloud environments and applies privacy- and security-by-design principles to make the cloud behave as the human user would expect.

Academic Publications and Activities

Latest Publications

  • L. Sell, H. C. Pöhls and T. Lorünser. C3S: Cryptographically Combine Cloud Storage for Cost-Efficient Availability and Confidentiality. In Proceedings of the 10th International Conference on Cloud Computing Technology and Science (CLOUDCOM 2018), IEEE, Dec., 2018.  This is a pre-print. pdf... 
  • S. Krenn, H. C. Pöhls, K. Samelin and D. Slamanig. Protean Signature Schemes. In Proc. of the 17th conference on Cryptology and Network Security (CANS 2018), pages 256-276, Springer, Sept., 2018.  This is the full version also available on eprint. doi...  pdf... 
  • S. Krenn, H. C. Pöhls, K. Samelin and D. Slamanig. Chameleon-Hashes with Dual Long-Term Trapdoors and Their Applications. In Progress in Cryptology (AFRICACRYPT 2018), pages 11-32, Springer, May, 2018.  This is the full version. doi...  pdf... 
  • T. Lorünser, H. C. Pöhls, L. Sell and T. Länger. CryptSDLC: Embedding Cryptographic Engineering into Secure Software Development Lifecycle. In Proceedings of the 13th International Conference on Availability, Reliability and Security (ARES 2018), pages 4:1-4:9, ACM, Aug., 2018. doi...  pdf... 
  • H. C. Pöhls. Kryptographie --- die neue Generation sicherer Cloud-Services?. Talk at the Hosting and Service Provider Summit 2018, Frankfurt, Germany, 2018. pdf... 
  • R. C. Staudemeyer, H. C. Pöhls and M. Wójcik. The road to privacy in IoT: beyond encryption and signatures, towards unobservable communication. In Proc. of The 7th workshop on IoT-SoS: Internet of Things Smart Objects and Services (WOWMOM SOS-IOT 2018), IEEE, July, 2018.  This is a pre-print. pdf... 

Project Work


PRISMACLOUDActing principal investigator;
research on practical cryptographic mechanisms for secure and privacy protecting cloud services based; Controlling a budget of ∼0.5 Mio.€; Lead of work package „Composition of next-generation secure cloud services“ with 103 person months involving industrial and academic partners.

[ 3.5 years – 16 partners – funding: ∼8 Mio.€ in EU H2020 Research and Innovation – size: 919 person months ]


RERUMActing scientific\technical deputy co-coordinator; acting principal investigator;
research on security and privacy in the Internet-of-Things (IoT); Controlling a budget of ∼0.7 Mio.€; Lead of work package „Security“ with 118 person months involving industrial and academic partners.

[ 3 years – 12 partners – funding: ∼5.2 Mio.€in EU FP7 STREP - size: 554 person months ]

Contact Me

Passau/Hamburg, Germany

Phone: +49

Email: hp@poehls.com

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