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I am a researcher in cryptography and PhD student at IAIK, Graz University of Technology. My main research interests are in the field of public key cryptography with a focus on post-quantum signature schemes and modern public key cryptography.

Publications and Talks

Conferences

2018 David Derler, Sebastian Ramacher, Danial Slamanig. Short Double- and N-Times-Authentication-Preventing Signatures from ECDSA and More. Euro S&P 2018 (accepted)
2017 Melissa Chase, David Derler, Steven Goldfeder Claudio Orlandi, Sebastian Ramacher, Christian Rechberger, Daniel Slamanig, Greg Zaverucha. Post-Quantum Zero-Knowledge and Signatures from Symmetric-Key Primitives. CCS 2017
2017 David Derler, Sebastian Ramacher, Daniel Slamanig. Homomorphic Proxy Re-Authenticators and Applications to Verifiable Multi-User Data Aggregation. FC 2017 (to appear).

Journals

2015 Alfred Geroldinger, Sebastian Ramacher, Andreas Reinhart. On v-Marot Mori rings and C-rings. Journal of the Korean Mathematical Society Vol. 52 No. 1/2015

Talks

2017 Post-Quantum Zero-Knowledge and Signatures from Symmetric-Key Primitives at CCS 2017 on November 2, 2017 (together with Steven Goldfeder).
2017 Post-Quantum Zero-Knowledge and Signatures from Symmetric-Key Primitives at Microsoft Research on October 26, 2017.
2017 Post-Quantum Zero-Knowledge and Signatures from Symmetric-Key Primitives at CryptoSymposium 2017 on March 28, 2017.

Teaching

I am currently involved with the following courses:

Potential topics for student projects, bachelor’s and master’s thesis can be found here: