Nils Kopal

Publication Activity (10 Years)

Years Active: 2013-2024
Publications (10 Years): 29

Top Venues

Cryptologia

HistoCrypt

CoRR

Datenschutz und Datensicherheit

University of Kassel, Germany (PHD)

Education History

University of Kassel, Germany

PHD

Publications

Beáta Megyesi, Crina Tudor, Benedek Láng, Anna Lehofer, Nils Kopal, Karl de Leeuw, Michelle Waldispühl
Keys with nomenclatures in the early modern Europe. Cryptologia 48 (2) (2024)
Vasily Mikhalev, Nils Kopal, Bernhard Esslinger, Michelle Waldispühl, Benedek Láng, Beáta Megyesi
What is the Code for the Code? Historical Cryptology Terminology. HistoCrypt (2023)
Vasily Mikhalev, Nils Kopal, Bernhard Esslinger
Evaluating GPT-4's Proficiency in Addressing Cryptography Examinations. IACR Cryptol. ePrint Arch. 2023 (2023)
Beáta Megyesi, Justyna Sikora, Filip Fornmark, Michelle Waldispühl, Nils Kopal, Vasily Mikhalev
Historical Language Models in Cryptanalysis: Case Studies on English and German. HistoCrypt (2023)
Nils Kopal, Michelle Waldispühl
Deciphering three diplomatic letters sent by Maximilian II in 1575. Cryptologia 46 (2) (2022)
Elonka Dunin, Magnus Ekhall, Konstantin Hamidullin, Nils Kopal, George Lasry, Klaus Schmeh
How we set new world records in breaking Playfair ciphertexts. Cryptologia 46 (4) (2022)
Nino Fürthauer, Vasily Mikhalev, Nils Kopal, Bernhard Esslinger, Harald Lampesberger, Eckehard Hermann
Evaluating Deep Learning Techniques for Known-Plaintext Attacks on the Complete Columnar Transposition Cipher. HistoCrypt (2022)
Beáta Megyesi, Crina Tudor, Benedek Láng, Anna Lehofer, Nils Kopal, Michelle Waldispühl
What Was Encoded in Historical Cipher Keys in the Early Modern Era? HistoCrypt (2022)
Nils Kopal, Bernhard Esslinger
New Ciphers and Cryptanalysis Components in CrypTool 2. HistoCrypt (2022)
George Lasry, Beáta Megyesi, Nils Kopal
Deciphering papal ciphers from the 16th to the 18th Century. Cryptologia 45 (6) (2021)
Nils Kopal, Michelle Waldispühl
Two Encrypted Diplomatic Letters Sent by Jan Chodkiewicz to Emperor Maximilian II in 1574-1575. HistoCrypt (2021)
Ernst Leierzopf, Vasily Mikhalev, Nils Kopal, Bernhard Esslinger, Harald Lampesberger, Eckehard Hermann
Detection of Classical Cipher Types with Feature-Learning Approaches. AusDM (2021)
Jörgen Dinnissen, Nils Kopal
Island Ramanacoil a Bridge too Far. A Dutch Ciphertext from 1674. HistoCrypt (2021)
Ernst Leierzopf, Nils Kopal, Bernhard Esslinger, Harald Lampesberger, Eckehard Hermann
A Massive Machine-Learning Approach For Classical Cipher Type Detection Using Feature Engineering. HistoCrypt (2021)
Nils Kopal
Of Ciphers and Neurons - Detecting the Type of Ciphers Using Artificial Neural Networks. HistoCrypt (2020)
Beáta Megyesi, Bernhard Esslinger, Alicia Fornés, Nils Kopal, Benedek Láng, George Lasry, Karl de Leeuw, Eva Pettersson, Arno Wacker, Michelle Waldispühl
Decryption of historical manuscripts: the DECRYPT project. Cryptologia 44 (6) (2020)
George Lasry, Nils Kopal, Arno Wacker
Cryptanalysis of Enigma double indicators with hill climbing. Cryptologia 43 (4) (2019)
Nils Kopal
Cryptanalysis of Homophonic Substitution Ciphers Using Simulated Annealing with Fixed Temperature. HistoCrypt (2019)
Nils Kopal
Solving Classical Ciphers with CrypTool 2. HistoCrypt (2018)
George Lasry, Nils Kopal, Arno Wacker
Ciphertext-only cryptanalysis of short Hagelin M-209 ciphertexts. Cryptologia 42 (6) (2018)
Henner Heck, Olga Kieselmann, Nils Kopal, Arno Wacker
A Decentralized Resilient Short-Term Cache for Messaging. DAIS (2018)
George Lasry, Ingo Niebel, Nils Kopal, Arno Wacker
Deciphering ADFGVX messages from the Eastern Front of World War I. Cryptologia 41 (2) (2017)
Nils Kopal, Matthäus Wander, Christopher Konze, Henner Heck
Adaptive Cheat Detection in Decentralized Volunteer Computing with Untrusted Nodes. DAIS (2017)
George Lasry, Nils Kopal, Arno Wacker
Automated Known-Plaintext Cryptanalysis of Short Hagelin M-209 Messages. Cryptologia 40 (1) (2016)
Nils Kopal
Rational Unified Process. CoRR (2016)
Nils Kopal
Volume Raycasting mit OpenCL. CoRR (2016)
George Lasry, Moshe Rubin, Nils Kopal, Arno Wacker
Cryptanalysis of Chaocipher and solution of Exhibit 6. Cryptologia 40 (6) (2016)
George Lasry, Nils Kopal, Arno Wacker
Ciphertext-only cryptanalysis of Hagelin M-209 pins and lugs. Cryptologia 40 (2) (2016)
George Lasry, Nils Kopal, Arno Wacker
Cryptanalysis of columnar transposition cipher with long keys. Cryptologia 40 (4) (2016)
Angelo Liguori, Francesco Benedetto, Gaetano Giunta, Nils Kopal, Arno Wacker
Analysis and monitoring of hidden TCP traffic based on an open-source covert timing channel. CNS (2015)
Nils Kopal, Olga Kieselmann, Arno Wacker
Simulating Cheated Results Dissemination for Volunteer Computing. FiCloud (2015)
Olga Kieselmann, Nils Kopal, Arno Wacker
"Löschen" im Internet. Datenschutz und Datensicherheit 39 (1) (2015)
Angelo Liguori, Francesco Benedetto, Gaetano Giunta, Nils Kopal, Arno Wacker
SoftGap: A Multi Independent Levels of Security Cross-Domain Solution. FiCloud (2015)
Olga Kieselmann, Nils Kopal, Arno Wacker
A Novel Approach to Data Revocation on the Internet. DPM/QASA@ESORICS (2015)
George Lasry, Nils Kopal, Arno Wacker
Solving the Double Transposition Challenge with a Divide-and-Conquer Approach. Cryptologia 38 (3) (2014)
Nils Kopal, Olga Kieselmann, Arno Wacker, Bernhard Esslinger
CrypTool 2.0. Datenschutz und Datensicherheit 38 (10) (2014)
Jörg Hähner, Stefan Rudolph, Sven Tomforde, Dominik Fisch, Bernhard Sick, Nils Kopal, Arno Wacker
A Concept for Securing Cyber-Physical Systems with Organic Computing Techniques. ARCS Workshops (2013)

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Publication Activity (10 Years)

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Nils Kopal