Universitätsstr. 140
Ruhr-University Bochum
44801 Bochum
Germany
Room: MC 0.29
Tel: +49 (0)234 32-23261
E-Mail: alex.lastname@rub.de
Office hours: By Arrangement
Table of Contents
Publications
Multiple Group Action Dlogs with(out) Precomputation
Alexander May, Massimo Ostuzzi
In: Preprint, Geplante Veröffentlichung.
Links | Schlagwörter: Preprint
@article{DBLP:journals/iacr/MayO24,
title = {Multiple Group Action Dlogs with(out) Precomputation},
author = {Alexander May and Massimo Ostuzzi},
url = {https://eprint.iacr.org/2024/564, Paper },
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
journal = {Preprint},
keywords = {Preprint},
pubstate = {forthcoming},
tppubtype = {article}
}
How to Lose Some Weight - A Practical Template Syndrome Decoding Attack
Sebastian Bitzer, Jeroen Delvaux, Elena Kirshanova, Sebastian Maaßen, Alexander May, Antonia Wachter-Zeh
Coding and Cryptography (WCC 24), 2024.
Links | Schlagwörter: Crypto Others
@workshop{DBLP:journals/iacr/BitzerDKMMW24,
title = {How to Lose Some Weight - A Practical Template Syndrome Decoding Attack},
author = {Sebastian Bitzer and Jeroen Delvaux and Elena Kirshanova and Sebastian Maaßen and Alexander May and Antonia Wachter-Zeh},
url = {https://eprint.iacr.org/2024/621, Paper
https://wcc2024.sites.dmi.unipg.it/SLIDES/Bitzer.pdf, Slides},
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
booktitle = {Coding and Cryptography (WCC 24)},
journal = {IACR Cryptol. ePrint Arch.},
pages = {621},
keywords = {Crypto Others},
pubstate = {published},
tppubtype = {workshop}
}
Too Many Hints - When LLL Breaks LWE
Alexander May, Julian Nowakowski
In: Advances in Cryptology (ASIACRYPT 23), 2023.
Links | Schlagwörter: Crypto Flagship, Rank A*/A
@inproceedings{DBLP:conf/asiacrypt/MayN23,
title = {Too Many Hints - When LLL Breaks LWE},
author = {Alexander May and Julian Nowakowski},
url = {https://eprint.iacr.org/2023/777.pdf, Paper
https://iacr.org/submit/files/slides/2023/asiacrypt/asiacrypt2023/314/slides.pdf, Slides
https://www.youtube.com/watch?v=4USR_wlFpg8, Video
https://doi.org/10.1007/978-981-99-8730-6\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\_4, DOI
},
year = {2023},
date = {2023-12-01},
urldate = {2023-12-01},
booktitle = {Advances in Cryptology (ASIACRYPT 23)},
volume = {14441},
series = {Lecture Notes in Computer Science},
keywords = {Crypto Flagship, Rank A*/A},
pubstate = {published},
tppubtype = {inproceedings}
}
How to Enumerate LWE Keys as Narrow as in Kyber/Dilithium
Timo Glaser, Alexander May
In: Cryptology and Network Security (CANS 23), S. 75–100, Springer, 2023.
Links | Schlagwörter: Crypto Others
@inproceedings{DBLP:conf/cans/GlaserM23,
title = {How to Enumerate LWE Keys as Narrow as in Kyber/Dilithium},
author = {Timo Glaser and Alexander May},
url = {https://eprint.iacr.org/2022/1337.pdf, Paper
https://doi.org/10.1007/978-981-99-7563-1_4, DOI
https://dblp.uni-trier.de/rec/conf/cans/GlaserM23.html?view=bibtex, bibtex},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
booktitle = {Cryptology and Network Security (CANS 23)},
volume = {14342},
pages = {75–100},
publisher = {Springer},
series = {Lecture Notes in Computer Science},
keywords = {Crypto Others},
pubstate = {published},
tppubtype = {inproceedings}
}
Breaking Goppa-based McEliece with hints
Elena Kirshanova, Alexander May
In: Security and Cryptography for Networks (SCN 22), and Journal of Information and Computation, Volume 293, 2023.
Links | Schlagwörter: Crypto Others
@inproceedings{DBLP:journals/iandc/KirshanovaM23,
title = {Breaking Goppa-based McEliece with hints},
author = {Elena Kirshanova and Alexander May},
url = {https://eprint.iacr.org/2022/525.pdf, Paper
https://doi.org/10.1016/j.ic.2023.105045, DOI Journal
https://link-springer-com-443.webvpn.synu.edu.cn/chapter/10.1007/978-3-031-14791-3_1, DOI Conference
https://dblp.uni-trier.de/rec/conf/pqcrypto/KirshanovaMN23.html?view=bibtex, bibtex},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
booktitle = {Security and Cryptography for Networks (SCN 22), and
Journal of Information and Computation, Volume 293},
issuetitle = {Test},
journal = {Information and Computation},
volume = {Volume 293},
keywords = {Crypto Others},
pubstate = {published},
tppubtype = {inproceedings}
}
Low Memory Attacks on Small Key CSIDH
Jesús-Javier Chi-Dominguez, Andre Esser, Sabrina Kunzweiler, Alexander May
In: Applied Cryptography and Network Security (ACNS 23), S. 276–304, Springer, 2023.
Links | Schlagwörter: Crypto Others
@inproceedings{DBLP:conf/acns/ChiDominguezEKM23,
title = {Low Memory Attacks on Small Key CSIDH},
author = {Jesús-Javier Chi-Dominguez and Andre Esser and Sabrina Kunzweiler and Alexander May},
url = {https://eprint.iacr.org/2023/507.pdf, Paper
https://doi.org/10.1007/978-3-031-33491-7_11, DOI},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
booktitle = {Applied Cryptography and Network Security (ACNS 23)},
issuetitle = {Applied Cryptography and Network Security (ACNS)},
volume = {13906},
pages = {276–304},
publisher = {Springer},
chapter = {Part II},
series = {Lecture Notes in Computer Science},
keywords = {Crypto Others},
pubstate = {published},
tppubtype = {inproceedings}
}
New NTRU Records with Improved Lattice Bases
Elena Kirshanova, Alexander May, Julian Nowakowski
In: Post-Quantum Cryptography (PQCrypto 23), S. 167–195, Springer, 2023.
Links | Schlagwörter: Crypto Others
@inproceedings{DBLP:conf/pqcrypto/KirshanovaMN23c,
title = {New NTRU Records with Improved Lattice Bases},
author = {Elena Kirshanova and Alexander May and Julian Nowakowski},
url = {https://eprint.iacr.org/2023/582.pdf, Paper
https://doi.org/10.1007/978-3-031-40003-2_7, DOI
https://dblp.uni-trier.de/rec/conf/pqcrypto/KirshanovaMN23.html?view=bibtex%20bibtex, bibtex
},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
booktitle = {Post-Quantum Cryptography (PQCrypto 23)},
volume = {14154},
pages = {167–195},
publisher = {Springer},
series = {Lecture Notes in Computer Science},
keywords = {Crypto Others},
pubstate = {published},
tppubtype = {inproceedings}
}
Dlog is Practically as Hard (or Easy) as DH - Solving Dlogs via DH Oracles on EC Standards
Alexander May, Carl Richard Theodor Schneider
In: Transactions on Cryptographic Hardware and Embedded Systems (TCHES), S. 146–166, 2023.
Links | Schlagwörter: Crypto Area, Rank A*/A
@inproceedings{DBLP:journals/tches/MayS23,
title = {Dlog is Practically as Hard (or Easy) as DH - Solving Dlogs via DH Oracles on EC Standards},
author = {Alexander May and Carl Richard Theodor Schneider},
url = {https://eprint.iacr.org/2023/539, Paper
https://informatik.rub.de/wp-content/uploads/2024/08/Dlog_vs_DH-2.pdf, Slides
https://doi.org/10.46586/tches.v2023.i4.146-166, DOI
https://dblp.org/rec/journals/iacr/MayS23.html?view=bibtex, bibtex},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
booktitle = {Transactions on Cryptographic Hardware and Embedded Systems (TCHES)},
volume = {2023},
number = {4},
pages = {146–166},
keywords = {Crypto Area, Rank A*/A},
pubstate = {published},
tppubtype = {inproceedings}
}
Partial Key Exposure Attacks on BIKE, Rainbow and NTRU
Andre Esser, Alexander May, Javier A. Verbel, Weiqiang Wen
In: Advances in Cryptology (CRYPTO 2022) , S. 346–375, Springer, 2022.
Links | Schlagwörter: Crypto Flagship, Rank A*/A
@inproceedings{DBLP:conf/crypto/EsserMVW22b,
title = {Partial Key Exposure Attacks on BIKE, Rainbow and NTRU},
author = {Andre Esser and Alexander May and Javier A. Verbel and Weiqiang Wen},
url = {https://eprint.iacr.org/2022/259.pdf, Paper
https://iacr.org/submit/files/slides/2022/crypto/crypto2022/70/slides.pptx, Slides
https://doi.org/10.1007/978-3-031-15982-4_12, DOI
https://dblp.uni-trier.de/rec/conf/crypto/EsserMVW22.html?view=bibtex, bibtex},
year = {2022},
date = {2022-08-01},
urldate = {2022-08-01},
booktitle = {Advances in Cryptology (CRYPTO 2022) },
volume = {13509},
pages = {346–375},
publisher = {Springer},
series = {Lecture Notes in Computer Science},
keywords = {Crypto Flagship, Rank A*/A},
pubstate = {published},
tppubtype = {inproceedings}
}
Approximate Divisor Multiples - Factoring with Only a Third of the Secret CRT-Exponents
Alexander May, Julian Nowakowski, Santanu Sarkar
In: Advances in Cryptology (EUROCRYPT 22) , S. 147–167, Springer, 2022.
Links | Schlagwörter: Crypto Flagship, Rank A*/A
@inproceedings{DBLP:conf/eurocrypt/MayNS22,
title = {Approximate Divisor Multiples - Factoring with Only a Third of the Secret CRT-Exponents},
author = {Alexander May and Julian Nowakowski and Santanu Sarkar},
url = {https://eprint.iacr.org/2022/271.pdf, Paper
https://iacr.org/submit/files/slides/2022/eurocrypt/eurocrypt2022/94/slides.pdf, Slides
https://youtube.com/watch?v=4USR_wlFpg8, Video
https://doi.org/10.1007/978-3-031-07082-2_6, DOI},
year = {2022},
date = {2022-05-02},
urldate = {2022-05-02},
booktitle = {Advances in Cryptology (EUROCRYPT 22) },
volume = {13277},
pages = {147–167},
publisher = {Springer},
series = {Lecture Notes in Computer Science},
keywords = {Crypto Flagship, Rank A*/A},
pubstate = {published},
tppubtype = {inproceedings}
}
Lectures (Moodle/Notes)
- Cryptanalysis (Codes, Classic 1, Cl. 2)
- Cryptography (Sym, Asym)
- Probabilistic (Basic, Algos)
- Quantum Algorithms (Script)
Former PhDs
Show names, year of graduation
- Önder Askin, 2024
- Floyd Zweydinger, 2023
- Lars Schlieper, 2022
- Alexander Helm, 2020
- Andre Esser, 2020
- Matthias Minihold, 2019
- Leif Both, 2018
- Robert Kübler, 2018
- Elena Kirshanova, 2016
- Ilya Ozerov, 2016
- Gottfried Herold, 2014
- Alexander Meurer, 2014
- Mathias Herrmann, 2011
- Maike Ritzenhofen, 2010