@phdthesis{Meyer2021,
  author    = {Meyer, Michael},
  title     = {Practical isogeny-based cryptography},
  doi       = {10.25972/OPUS-24682},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-246821},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year      = {2021},
  abstract  = {This thesis aims at providing efficient and side-channel protected implementations of isogeny-based primitives, and at their application in threshold protocols. It is based on a sequence of academic papers. Chapter 3 reviews the original variable-time implementation of CSIDH and introduces several optimizations, e.g. a significant improvement of isogeny computations by using both Montgomery and Edwards curves. In total, our improvements yield a speedup of 25\% compared to the original implementation. Chapter 4 presents the first practical constant-time implementation of CSIDH. We describe how variable-time implementations of CSIDH leak information on private keys, and describe ways to mitigate this. Further, we present several techniques to speed up the implementation. In total, our constant-time implementation achieves a rather small slowdown by a factor of 3.03. Chapter 5 reviews practical fault injection attacks on CSIDH and presents countermeasures. We evaluate different attack models theoretically and practically, using low-budget equipment. Moreover, we present countermeasures that mitigate the proposed fault injection attacks, only leading to a small performance overhead of 7\%. Chapter 6 initiates the study of threshold schemes based on the Hard Homogeneous Spaces (HHS) framework of Couveignes. Using the HHS equivalent of Shamir's secret sharing in the exponents, we adapt isogeny based schemes to the threshold setting. In particular, we present threshold versions of the CSIDH public key encryption and the CSI-FiSh signature scheme. Chapter 7 gives a sieving algorithm for finding pairs of consecutive smooth numbers that utilizes solutions to the Prouhet-Tarry-Escott (PTE) problem. Recent compact isogeny-based protocols, namely B-SIDH and SQISign, both require large primes that lie between two smooth integers. Finding such a prime can be seen as a special case of finding twin smooth integers under the additional stipulation that their sum is a prime.},
  subject      = {Kryptologie},
  language  = {en}
}
@article{TappeMeyerOesterleinetal.2011,
  author    = {Tappe, Dennis and Meyer, Michael and Oesterlein, Anett and Jaye, Assan and Frosch, Matthias and Schoen, Christoph and Pantchev, Nikola},
  title     = {Transmission of Armillifer armillatus Ova at Snake Farm, The Gambia, West Africa},
  series = {Emerging Infectious Diseases},
  volume    = {17},
  journal   = {Emerging Infectious Diseases},
  number    = {2},
  doi       = {10.3201/eid1702.101118},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-142804},
  pages     = {251-254},
  year      = {2011},
  abstract  = {Visceral pentastomiasis caused by Armillifer armillatus larvae was diagnosed in 2 dogs in The Gambia. Parasites were subjected to PCR; phylogenetic analysis confirmed relatedness with branchiurans/crustaceans. Our investigation highlights transmission of infective A. armillatus ova to dogs and, by serologic evidence, also to 1 human, demonstrating a public health concern.},
  language  = {en}
}
@article{CarrollSendtnerMeyeretal.1993,
  author    = {Carroll, Patrick and Sendtner, Michael and Meyer, Michael and Thoenen, Hans},
  title     = {Rat ciliary neurothrophic factor (CNTF): gene structure and regulation of mRNA levels in glial cell cultures.},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-31763},
  year      = {1993},
  abstract  = {The structure of the rat ciliary neurotrophic factor (CNTF) gene and the regulation ofCNTF mRNA levels in cultured glial cells were investigated. The rat mRNA is encoded by a simple two-exon transcription unit. Sequence analysis of the region upstream of the transcription start-site did not reveal a typical TATA-box consensus sequence. Low levels of CNTF mRNA were detected in cultured Schwann cells, and CNTF mRNA was not increased by a variety of treatments. Three-week-old astrocyteenriched cell cultures from new-born rat brain contained easily detectable CNTF mRNA. In astrocyte-enriched cultures, upregulation of CNTF mRNA levels was observed after treatment with IFN-gamma. CNTF mRNA levels were down-regulated in these cells by treatments that elevate intracellular cyclic AMP and by members of the fibroblast growth factor (FGF) family. The implications of these results for potential in vivo functions of CNTF are discussed.},
  language  = {en}
}