Christoph Striecks

I am a cryptographer with a professional focus on secure technologies (mainly, key exchange and encryption, secure data access control, and authentication). Moreover, I have particularly worked on hybridization techniques for defense-in-depth approaches in large quantum-safe networks and on long-term security (e.g., see talks on hybrid cryptography and blog post on forward secrecy).

Before joining the AIT Austrian Institute of Technology – Austria’s largest Research and Technology Organization (RTO) – in 2016, I held a post-doc position at the Karlsruhe Institute of Technology (KIT) in Germany.

In 2015, I received my PhD (Dr. rer. nat.) in cryptography from KIT under the supervision of Prof. Dennis Hofheinz (now at ETH Zurich) on scalable advanced cryptographic building blocks. Teaching activities included Algorithms I (lab, ST 2015) and IT security (lab, ST 2013), encompassed by several seminars and labs.

In 2010, I received my Diploma in computer science from the Technical University of Braunschweig in Germany with a major in cryptography and software engineering. From March to September 2008, I worked as a software-development intern for Siemens USA in Princeton, New Jersey.

News and activities:

Selected publications (alphabetical ordering of authors):
      1. Muckle+: End-to-End Hybrid Authenticated Key Exchanges
        Sonja Bruckner, Sebastian Ramacher, and Christoph Striecks.
        Post-Quantum Cryptography - 14th International Workshop, PQCrypto 2023, College Park, MD, USA, August 16-18, 2023, Proceedings
      2. Bloom Filter Encryption and Applications to Efficient Forward-Secret 0-RTT Key Exchange
        David Derler, Tibor Jager, Daniel Slamanig, and Christoph Striecks.
        Advances in Cryptology - EUROCRYPT 2018 - 37th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Tel Aviv, Israel, April 29 - May 3, 2018 Proceedings, Part III

    Recent research visits:

    Program committees:

    Selected external reviewing activities:

    Current projects:

    • QCI-CAT (Digital European Program, 2022-2025)
    • PETRUS (Digital European Program, 2022-2025)
    • EDOCC (European Defence Fund, 2022-2025)
    • QSNP (HORIZON-RIA 2023-2026)

    Completed projects:

    Selected invited talks and activities:

    • Invited webinar on Quantum-Secure Hybrid Key Exchanges (European Commission, 2024)
    • Invited talk on Hybrid Authenticated Key Exchanges (NXP, 2023)
    • Invited talk on Forward Security (ETH Zurich, 2022)
    • Invited talk on Forward Security (FAU Nürnberg-Erlangen, 2022)
    • Invited lecture on Redactable Blockchains (with Daniel Slamanig, TU Vienna, 2021)
    • Invited talk on Attribute-Based Encryption for Strong Access Control (ETSI Security Week, 2020)
    • Invited lectures on Advanced Public-Key Encryption (TU Vienna, 2020 & 2019)
    • Invited talk on Security, Safety, and Privacy-by-Design (Austrian Standards, 2020, press coverage in futurezone and Austrian Standards)
    • Invited talk on Attribute-Based Encryption for strong access control (Graz Security Days for Industry, 2019)
    • Invited talk on Forward Security (Royal Holloway, University of London, 2018)
    • Involvement in ETSI STF 529 on standardizing Attribute-Based Encryption (press release from ETSI)

    Selected teaching & supervision:

    • Teaching: Redactable Blockchains (invited lecture, WT 2021 at TU Vienna), Advanced Public-Key Encryption (invited lecture, WT 2020 at TU Vienna), Advanced Public-Key Encryption (invited lecture, WT 2019 at TU Vienna), Algorithms I (TA, ST 2015 at KIT), IT security (TA, ST 2013 at KIT)
    • PhD visitor: Jaime S. Buruaga (Technical University of Madrid, Jul.-Oct. 2024)
    • Interns: Augustine Bugler (University of Vienna, Jul.-Sep. 2024), Kevin Verhaeghe (ETH Zurich, Jul.-Sep. 2024), Alexander Zikulnig (TU Vienna, Aug.-Sep. 2022), Denis Jahic (TU Vienna, Jul.-Sep. 2021)
    • Diploma theses: Christian Matt (KIT, 2011), Alexander Mai (KIT, 2014)