DECRYPT Publications

2024

• Fornés, A., Chen, J., Torras, P., Badal, C., Megyesi, B., Waldispühl, M., Kopal, N., Lasry, G. (2024). ICDAR 2024 Competition on Handwriting Recognition of Historical Ciphers. In: Barney Smith, E.H., Liwicki, M., Peng, L. (eds) Document Analysis and Recognition - ICDAR 2024. Lecture Notes in Computer Science, vol 14809. Springer, Cham. [https://doi.org/10.1007/978-3-031-70552-6_20]

• Goio, G., Torras, P., Fornés, A., and Megyesi, B. (2024) Exploring the Alignment of Transcriptions to Images of Encrypted Manuscripts. In Proceedings of the 7th International Conference on Historical Cryptology (HistoCrypt 2024) [https://hdl.handle.net/10062/98471]

• Héder, M., Fornés, A., Kopal, N., Szigeti, F., and Megyesi, B. (2024) Supporting Historical Cryptology: The Decrypt Pipeline. In Proceedings of the 7th International Conference on Historical Cryptology (HistoCrypt 2024) [https://doi.org/10.58009/aere-perennius0100]
• Láng, B. and Megyesi, B. (2024) An STS Analysis of a Digital Humanities Collaboration: Trading Zones, Boundary Objects, and Interactional Expertise in the DECRYPT Project. Humanities and Social Sciences Communication, 618. Nature. (2024). [https://doi.org/10.1057/s41599-024-03135-w]
• Láng, B., Megyesi, B., Kopal, N., Mikhalev, V., Tudor, C. and Waldispühl, M. (2024) Cipher Key Instructions in Early Modern Europe: Analysis and Text Edition. Cryptologia, 1–27. [https://doi.org/10.1080/01611194.2024.2396800]
• Megyesi, B., Fornés, A., Kopal, N., Láng, B., Waldispühl, M., Mikhalev, V. and Esslinger, B. (2024) Historical Cryptology. In Esslinger, B. (ed), Chapter 3 in Learning and Experiencing Cryptography with CrypTool and SageMath , Artech, 2024. [book-chapter.pdf]
• Megyesi, B., Tudor, C., Láng, B., Lehofer, A., Kopal, N., de Leeuw, K., and Waldispühl, M. (2024) Keys with Nomenclatures in the Early Modern Europe. Journal of Cryptologia 48:2 pp. 97-139. Taylor and Francis. [https://doi.org/10.1080/01611194.2022.2113185]
• Megyesi, B., Láng, B., Kopal, N., Mikhalev, V., Tudor, C., and Waldispühl, M. (2024) A Typology for Cipher Key Instructions in Early Modern Times. In Proceedings of the 7th International Conference on Historical Cryptology (HistoCrypt 2024) [https://doi.org/10.58009/aere-perennius0107]
• Méndez, M., Torras, P., Molina, A., Chen, J., Ramos-Terrades, O., Fornés, A. (2024) Structured Analysis of Alphabets in Historical Handwritten Ciphers. In Proceedings of the 3rd International Workshop on Artificial Intelligence for Digital Humanities (AI4DH). ECCV Workshop. 
• Waldispühl, M. & Kopal, N. 2024. Decipherment of a German encrypted letter sent from Sigismund Heusner von Wandersleben to Axel Oxenstierna in 1637. In M. Waldispühl & B. Megyesi (eds.). Proceedings of the 7th International Conference on Historical Cryptology HistoCrypt 2024, 249–253. Tartu: D-Space Tartu University Library.
• Waldispühl, M. and Megyesi, B. (eds.) (2024) Proceedings of the 7th International Conference on Historical Cryptology (HistoCrypt 2024). NEALT Proceedings Series 53. D-Space at Tartu University Library [https://hdl.handle.net/10062/98421]

2023

• Láng, B. (2023) Transfer of knowledge in the field of universal language schemes 18th-19th centuries. In Krász, Lilla (ed.): Sciences between Tradition and Innovation – Historical Perspectives/Wissenschaften zwischen Tradition und Innovation – historische Perspektiven. Wien: Praesens Verlag, 2023, 37-55

• Láng, B. (2023) Valódi és ál-kódfejtések a titkosírások történetében (Real and fake codebreaking in the history of cryptology) In: Bárdos, Dániel; Tuboly, Ádám Tamás (eds.) Emberarcú tudomány : Áltudományok ésösszeesküvés-elméletek szorításában. Budapest, Magyarország : Typotex Kiadó.

• Lasry, G. (2023) Armand de Bourbon Poly-Homophonic Cipher - 1649. Histocrypt 2023. Published by Linköping Electronic Press. [https://doi.org/10.3384/ecp195699]

• Lasry, G., Biermann, N. & Tomokiyo, S. (2023) Deciphering Mary Stuart’s lost letters from 1578-1584, Cryptologia, [https://doi.org/10.1080/01611194.2022.2160677]

• Megyesi, B., Sikora, J., Fornmark, F., Waldispühl, M., Kopal, N., and Mikhalev, V. (2023) Historical Language Models in Cryptanalysis: Case Studies on English and German. In the Proceedings of the 6th International Conference on Historical Cryptology. HistoCrypt 2023. pp. 120-129. [https://doi.org/10.3384/ecp195701]

• Mikhalev, V., Kopal, N., Esslinger, B., Waldispühl, M. Láng,B., and Megyesi B. (2023) What is the Code for the Code? – Historical Cryptology Terminology. In the Proceedings of the 6th International Conference on Historical Cryptology. HistoCrypt 2023. pp. 130-138. [https://doi.org/10.3384/ecp195702]

• Souibgui, M. A., Biswas, S., Mafla, A., Biten, A. F., Fornés, A., Kessentini, Y., Lladós, J., Gomez, L., & Karatzas, D. (2023). Text-DIAE: A Self-Supervised Degradation Invariant Autoencoder for Text Recognition and Document Enhancement. Proceedings of the AAAI Conference on Artificial Intelligence, 37(2), 2330-2338. [https://doi.org/10.1609/aaai.v37i2.25328]

• Souibgui, M. A., Torras, P., Chen, J.,  and Fornes. A. (2023) An Evaluation of Handwritten Text Recognition Methods for Historical Ciphered Manuscripts. Proceedings of 7th International Workshop on Historical Document Imaging and Processing (HIP). [https://doi.org/10.1145/3604951.3605509]

• Torras, P.,  Souibgui, M. A., Chen, J., Biswas, S., and Fornes. A. (2023) Segmentation-Free Alignment of Arbitrary Symbol Transcripts to Images. Proceedings of 15th IAPR International Workshop on Graphics Recognition (GREC). [https://doi.org/10.1007/978-3-031-41498-5_6]

• Waldispühl, M. Variation and Change. (2023) In Condorelli, M. & Rutkowska, H., The Cambridge Handbook of Historical Orthography. Cambridge: University Press. [book.pdf]

2022

• Dahlke, C. and Megyesi, B. (eds) (2022) Proceedings of the 5th International Conference on Historical Cryptology. NEALT Proceedings Series 49. HistoCrypt 2022. Published by Linköping Electronic Press. [https://doi.org/10.3384/ecp188]
• Fürthauer, N., Mikhalev, V., Kopal, N., Esslinger, B., Lampesberger, H., and Hermann, E. (2022) Evaluating Deep Learning Techniques for Known-Plaintext Attacks on the Complete Columnar Transposition Cipher. In the Proceedings of the 5th International Conference on Historical Cryptology. HistoCrypt 2022. [https://doi.org/10.3384/ecp188394] 
• Gambardella, M.E., Megyesi, B., and Pettersson, E. (2022) Identifying Cleartext in Historical Ciphers. In Proceedings of the Workshop on Language Technologies for Historical and Ancient Languages. LT4HALA 2022. [https://aclanthology.org/2022.lt4hala-1.1]
• Héder, M. and Megyesi, B. (2022) The DECODE Database of Historical Ciphers and Keys: Version 2. In Proceedings of the 5th International Conference on Historical Cryptology. HistoCrypt 2022. [https://doi.org/10.3384/ecp188397]
• Jemni, S. K., Souibgui, M. A., Kessentini, Y., & Fornés, A. (2022). Enhance to Read Better: A Multi-Task Adversarial Network for Handwritten Document Image Enhancement. Pattern Recognition, vol. 123. [https://doi.org/10.1016/j.patcog.2021.108370] 
• Kopal, N. and Megyesi, B. (2022) Die Kryptografen des Papstes: Entschlüsselt: Geheime Nachrichten aus dem Vatikan. Published in c't 3/22 auf Seite 134. [https://www.heise.de/select/ct/2022/3/2118013133459359622]
• Kopal N. and Waldispühl M. (2022) Deciphering Three Diplomatic Letters Sent by Maximilian II in 1575. Cryptologia 46 (2), 103-127. [https://doi.org/10.1080/01611194.2020.1858370]
• Lasry, G. (2022) Cracking SIGABA in Less than 24 Hours on a Consumer PC. Cryptologia. [https://www.tandfonline.com/doi/full/10.1080/01611194.2021.1989522] 
• Lasry, G. (2022) Analysis of a 19th Century French Cipher Created by Major Josse. Cryptologia. [https://www.tandfonline.com/doi/full/10.1080/01611194.2021.1996484] 
• Láng, B. (2022) Colonnele Frank's Indecipherable Chiffre. In the Proceedings of the 5th International Conference on Historical Cryptology. HistoCrypt 2022. [https://doi.org/10.3384/ecp188400]
• Lehofer, A. (2022) Applying Hierarchical Clustering to Homophonic Substitution Ciphers using Historical Corpora, Cryptologia, 46:5, 422-438. [https://doi.org/10.1080/01611194.2021.1918801]
• Magnifico, G., Megyesi, B., Souibgui, M.A., Chen, J., and Fornés, A. (2022) Lost in Transcription of Graphic Signs in Ciphers. In Proceedings of the 5th International Conference on Historical Cryptology. HistoCrypt 2022. [https://doi.org/10.3384/ecp188403]
• Megyesi, B., Tudor, C., Kopal, N., Láng, B., Lehofer, A., and Waldispühl, M. (2022) What Was Encoded in Historical Cipher Keys in the Early Modern Era?. In Proceedings of the 5th International Conference on Historical Cryptology. HistoCrypt 2022. [https://doi.org/10.3384/ecp188404]
• Megyesi, B., Tudor, C., Láng, B., Lehofer, A., Kopal, N., de Leeuw, K., and Waldispühl, M. (2022) Keys with Nomenclatures in the Early Modern Europe. Journal of Cryptologia UCRY 2113185. Taylor and Francis. [https://doi.org/10.1080/01611194.2022.2113185]
• Souibgui, M. A., Bensalah, A., Chen, J., Fornés, A. & Waldispühl, M. 2022. A User Perspective on HTR Methods for the Automatic Transcription of Rare Scripts. The case of Codex Runicus. ACM Journal on Computing and Cultural Heritage. [https://doi.org/10.1145/3519306]
• Souibgui, M. A., Biswas, S., Jemni, S. K., Kessentini, Y., Fornés, A., Lladós, J., & Pal, U. (2022). Docentr : An End-to-End Document Image Enhancement Transformer. In the Proceedings of the 26th International Conference on Pattern Recognition (ICPR2022). [https://doi.org/10.1109/ICPR56361.2022.9956101]
• Souibgui, M. A., Biten, A. F., Dey, S., Fornés, A., Kessentini, Y., Gomez, L., ... & Lladós, J. (2022). One-shot Compositional Data Generation for Low Resource Handwritten Text Recognition. In Winter Conference on Applications of Computer Vision (WACV). [https://doi.org/10.1109/WACV51458.2022.00262] 
• Souibgui, M.A., Fornés, A., Kessentini, Y., and Megyesi, B. (2022) Few Shots Are All You Need: A Progressive Learning Approach for Low Resource Handwritten Text Recognition. Journal of Pattern Recognition Letters, vol. 160, pp. 43-49. Elsevier. [https://doi.org/10.1016/j.patrec.2022.06.003]
• Waldispühl, M. Variation and Change. In Condorelli, M. & Rutkowska, H. (2022) The Cambridge Handbook of Historical Orthography. Cambridge: University Press. [https://doi.org/10.1017/9781108766463]

2021

• Chen, J., Souibgui, M.A., Fornés, A., and Megyesi, B. (2021). Unsupervised Alphabet Matching in Historical Encrypted Manuscript Images. In Proceedings of the 4th International Conference on Historical Cryptology. HistoCrypt 2021. [https://doi.org/10.3384/ecp183154]
• Dinnissen J. and Kopal N. (2021). Island Ramanacoil a Bridge too Far. A Dutch Ciphertext from 1674. In Proceedings of the 4th International Conference on Historical Cryptology. HistoCrypt 2021. [https://doi.org/10.3384/ecp183156]
• Kopal, N. and Waldispühl, M. (2021). Two Encrypted Diplomatic Letters Sent by Jan Chodkiewicz to Emperor Maximilian II in 1574-1575. In Proceedings of the 4th International Conference on Historical Cryptology. HistoCrypt 2021. [https://doi.org/10.3384/ecp183160]
• Láng, B. (2021). Transfer of knowledge in the field of universal language schemes 18th-19th centuries. In Lilla Krász, ed. Science between tradition and innovation, 2021. [https://doi.org/10.47074/HSCE.2022-2.15]
• Láng, B. (2021). The Rohonc code: tracing a historical riddle. University Park: Penn State University Press, 2021. ISBN: 978-0-271-09020-7 [https://www.psupress.org/books/titles/978-0-271-09020-7.html]
• Lasry, G. (2021). Modern Cryptanalysis of Schlüsselgerät 41. In Proceedings of the 4th International Conference on Historical Cryptology. HistoCrypt 2021. [https://doi.org/10.3384/ecp183163]
• Lasry, G. (2021). Deciphering a Letter from the French Ambassador in Holland to Louis XIV. In Proceedings of the 4th International Conference on Historical Cryptology. HistoCrypt 2021. [https://doi.org/10.3384/ecp183162]
• Leierzopf, E., Kopal, N., Esslinger, B., Lampesberger, H. and Hermann, E. A Massive Machine-Learning Approach For Classical Cipher Type Detection Using Feature Engineering. (2021). In Proceedings of the 4th International Conference on Historical Cryptology. HistoCrypt 2021. [https://doi.org/10.3384/ecp183164]
• Megyesi, B. and Láng, B. (2021) Revealing Secrets from the Past: Studying Historical Ciphers. Abstract to Digitial History in Sweden, Dec. 9-10, 2021, Umeå University, Sweden 
• Megyesi, B. and Tudor, C. (2021). Transcription of Historical Ciphers and Keys. Guidelines, version 2.0. Dept. of Linguistics and Philology, Uppsala University, Sweden. [guidelines.pdf]
• Megyesi, B., Tudor, C., Láng, B, and Lehofer, A. (2021). Key Design in the Early Modern Era in Europe. In Proceedings of the 4th International Conference on Historical Cryptology. HistoCrypt 2021. [https://doi.org/10.3384/ecp183165]
• Pau Torras, Mohamed Ali Souibgui, Jialuo Chen, Alicia Fornés. (2021). A Transcription Is All You Need: Learning to Align through Attention. In Proceedings of the 14th IAPR International Workshop on Graphics Recognition (GREC), 2021. [https://doi.org/10.1007/978-3-030-86198-8_11]

2020

• Bean, R., Lasry, G., and Weierud, F. (2020) Eavesdropping on the Biafra-Lisbon link – breaking historical ciphers from the Biafran war. Cryptologia [https://doi.org/10.1080/01611194.2020.1762261]
• Bean, R., Lasry, G., and Weierud, F. (2020) We decrypted messages from the Biafran war that have remained secret for 50 years, The Conversation, July 2020 [article]
• Chen, J., Souibgui, M. A., Fornés, A., and Megyesi, B. (2020) A Web-based Interactive Transcription Tool for Encrypted Manuscripts. In Proceedings of the 3rd International Conference on Historical Cryptology. HistoCrypt 2020. pp. 52-59. Linköping Electronic Press. [https://doi.org/10.3384/ecp2020171008] 
• Kopal N. (2020) Of Ciphers and Neurons – Detecting the Type of Ciphers Using Artificial Neural Networks. In Proceedings of the 3rd International Conference on Historical Cryptology. HistoCrypt 2020. pp. 77-86. Linköping Electronic Press. [https://doi.org/10.3384/ecp2020171011]

• Láng, B. (2020) “Was it a Sudden Shift in Professionalization? Austrian Cryptology and a Description of the Staatskanzlei Key Collection in the Haus-, Hof- und Staatsarchiv of Vienna" In: Beata, Megyesi (ed.) In Proceedings of the 3rd International Conference on Historical Cryptology HistoCrypt 2020. Linköping University Electronic Press, Linköpings universitet, (2020) p. 87. [https://doi.org/10.3384/ecp2020171012]

• Lasry, G. (2020) Solving a Tunny Challenge with Computerized Testery Methods. In Proceedings of the 3rd International Conference on Historical Cryptology. HistoCrypt 2020. [https://doi.org/10.3384/ecp2020171013]

• Lasry, G., Megyesi, B., and Kopal, N. (2020) Deciphering Papal Ciphers from the 16th to the 18th Century. Cryptologia. [https://doi.org/10.1080/01611194.2020.1755915]
• Lasry, G., Niebel, I., and Andersson, T. (2020) Deciphering German Diplomatic and Naval Attaché Messages from 1900-1915. Cryptologia. [https://doi.org/10.1080/01611194.2020.1755914]
• Lehofer, A. (2020) Decrypting Historical Ciphers - A Way of Mathematical Competence Development. Opus et Educatio. [https://doi.org/10.3311/ope.381]
• Megyesi, B. (2020a) Transcription of Ciphers and Keys. In Proceedings of the 3rd International Conference on Historical Cryptology. HistoCrypt 2020. pp. 106-115. Linköping Electronic Press. [https://doi.org/10.3384/ecp2020171014]
• Megyesi, B. (2020b) Transcription of Ciphers and Keys: Guidelines. Uppsala University. Sweden. [guidelines.pdf]
• Megyesi, B., Esslinger, B., Fornés, A., Kopal, N., Láng, B., Lasry, G., de Leeuw, K., Pettersson, E., Wacker, A., and Waldispühl, M. (2020) Decryption of historical manuscripts: the DECRYPT project. Cryptologia. [https://doi.org/10.1080/01611194.2020.1716410] 
• Souibgui, M. A. and Kessentini Y. (2020) DE-GAN: A Conditional Generative Adversarial Network for Document Enhancement. IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI) [https://doi.org/10.1109/TPAMI.2020.3022406] 
• Souibgui, M. A., Kessentini, Y., and Fornés, A. (2020) A conditional GAN based approach for distorted camera captured documents recovery. In Proceedings of the 4th Mediterranean Conference on Pattern Recognition and Artificial Intelligence (MedPRAI2020) [https://doi.org/10.1007/978-3-030-71804-6_16].
• Souibgui, M. A., Fornés, A., Kessentini, Y., and Tudor, C. (2020) A Few-shot Learning Approach for Historical Ciphered Manuscript Recognition. In Proceedings of the 25th International Conference on Pattern Recognition (ICPR2020) (accepted) [https://doi.org/10.1109/ICPR48806.2021.9413255].
• Tudor, C, Megyesi, B, and Láng, B. (2020) Automatic Key Structure Extraction. In Proceedings of the 3rd International Conference on Historical Cryptology. HistoCrypt 2020. pp. 146-152. Linköping Electronic Press. [https://doi.org/10.3384/ecp2020171018]

2019

• Baró A., Chen, J., Fornés, A., and Megyesi, B. (2019) Towards a Generic Unsupervised Method for Transcription of Encoded Manuscripts. In Proceedings of the 3rd International Conference on Digital Access to Textual Cultural Heritage (DATeCH2019), May 2019 Brussels, Belgium. [https://doi.org/10.1145/3322905.3322920]
• Kopal, N. (2019) Cryptanalysis of Homophonic Substitution Ciphers Using Simulated Annealing with Fixed Temperature. In Proceedings of the 2nd International Conference on Historical Cryptology, HistoCrypt 2019, June 23-25, 2019, Mons, Belgium. NEALT Proceedings Series 37, Linköping Electronic Press. [http://www.ep.liu.se/ecp/158/012/ecp19158012.pdf] 
• Láng, B. (2019) Dead ends in breaking an unknown cipher: experiences in the historiography of the Rohonc Codex Proceedings of the 2nd International Conference on Historical Cryptology, HistoCrypt 2019, June 23-26, 2019, Mons, Belgium, Belgium. NEALT Proceedings Series 37, Linköping Electronic Press. [https://ep.liu.se/ecp/158/006/ecp19158006.pdf]
• Lasry, G. (2019) A Practical Meet-in-the-Middle Attack on SIGABA, Proceedings of the 2nd International Conference on Historical Cryptology, HistoCrypt 2019, June 23-26, 2019, Mons, Belgium, Belgium. NEALT Proceedings Series 37, Linköping Electronic Press. [https://ep.liu.se/ecp/158/005/ecp19158005.pdf]
• Lasry, G. (2019) Solving a 40-Letter Playfair Challenge with CrypTool 2, Proceedings of the 2nd International Conference on Historical Cryptology, HistoCrypt 2019, June 23-26, 2019, Mons, Belgium. NEALT Proceedings Series 37, Linköping Electronic Press. [https://ep.liu.se/ecp/158/010/ecp19158010.pdf]
• Lasry, G., Nils Kopal, and Arno Wacker. (2019) Cryptanalysis of Enigma double indicators with hill climbing. Cryptologia 43.4: 267-292. [https://doi.org/10.1080/01611194.2018.1551253]

• Megyesi, B., Blomqvist, N., and Pettersson, E. (2019) The DECODE Database: Collection of Historical Ciphers and Keys. In Proceedings of the 2nd International Conference on Historical Cryptology. HistoCrypt 2019, June 23-25, 2019, Mons, Belgium. NEALT Proceedings Series 37, Linköping Electronic Press. [https://ep.liu.se/ecp/158/008/ecp19158008.pdf]

• Pettersson, E. and Megyesi, B. (2019) Matching Keys and Encrypted Manuscripts. In Proceedings of 22nd Nordic Conference on Computational Linguistics, Nodalida 2019. [https://aclanthology.org/W19-6126/]

PhD Theses

• Anna Lehofer (2024) The Applicability of Hierarchical Clustering to Historical Ciphers. PhD Thesis. Eötvös Loránd University, Budapest, Hungary. [https://doi.org/10.15476/ELTE.2023.248]
• Mohamed Ali Souibgui (2022) Document Image Enhancement and Recognition in Low Resource Scenarios: Application to Ciphers and Handwritten Text. PhD Thesis. December 1, 2022. Computer Vision Center. Universitat Autònoma de Barcelona. Spain. [http://hdl.handle.net/10803/688317]

Bachelor's and Master's Theses

• Marina Bermúdez Granados (2024)  Direct Decipherment and Transcription of Historical HandwrittenCiphered Document Images. Bachelor's thesis in Computer Science, Universitat Autònoma de Barcelona, Spain.
• John WInstead (2024) A Computational Investigation of English Spelling. Master's thesis in Linguistic Theory and Typology. University of Kentucky, USA.
• Fredrik Boglind (2024) Aligning Historical Ciphertext and Plaintext Using Statistical Machine Translation Methods. Bachelor's thesis in Computational Linguistics, Stockholm Unviersity.
• Ingrid Eliasson (2023) Evaluating and Fine-Tuning a Few-Shot Model for Transcription of Historical Ciphers. Master’s thesis in Language Technology, Uppsala University. [https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-504937]
• Jan Lammer (2023) Evaluation of an AI-based Tokenization of Digit Nomenclator Ciphers. Master's thesis in Computer Science, FH Oberösterreich Campus Hagenberg/University of Siegen, Germany. 
• Filip Fornmark (2022) Models, Keys and Cryptanalysis - Evaluating historical statistical language models in cryptanalysis of homophonic substitution ciphers. Bachelor's thesis in Linguistics, Gothenburg University, Sweden. [https://gupea.ub.gu.se/handle/2077/74597]
• Justyna Sikora (2022) The Influence of Language Models on Decryption of German Historical Ciphers. Master’s thesis in Language Technology, Uppsala University.  [http://www.diva-portal.org/smash/record.jsf?pid=diva2%3A1699078&dswid=1999]
• Nikolina Milioni (2022) Evaluating Transcription of Ciphers with Few-Shot Learning. Master’s thesis in Language Technology, Uppsala University. Sweden. [http://www.diva-portal.org/smash/record.jsf?pid=diva2%3A1671276&dswid=6127]
• Giacomo Magnifico (2021) Lost in Transcription: Evaluating Clustering and Few-Shot Learning for Transcription of Historical Ciphers. Master’s thesis in Language Technology, Uppsala University. Sweden. [http://www.diva-portal.org/smash/record.jsf?pid=diva2%3A1616686&dswid=-107]
• Gambardella, Maria-Elena (2021) Cleartext Detection and Language Identification in Ciphers. Master’s thesis in Language Technology, Uppsala University. Sweden. [https://www.diva-portal.org/smash/record.jsf?pid=diva2%3A1569329&dswid=4925] 
• Weimann, Niklas (2021) Implementierung und Visualisierung verschiedener kryptografischer Handverfahren und Codes in CrypTool 2 (Engl Title: Implementation and Visualization of different cryptographic hand ciphers and codes in CrypTool 2". Bachelor's thesis in computer science. University of Siegen, Germany, [https://www.cryptool.org/media/publications/theses/BA_Weimann.pdf]
• Addad, Sally (2020) Implementation and Visualization of Steganography Procedures in CrypTool 2. Bachelor's thesis in business informatics. University of Mannheim, [https://www.cryptool.org/media/publications/theses/BA_Addad.pdf
• Han, Renfei (2020) Using Attention-based Sequence-to-Sequence Neural Networks for Transcription of Historical Cipher Documents. Master’s thesis in Language Technology, Uppsala University, Sweden. [http://www.diva-portal.org/smash/record.jsf?pid=diva2%3A1470446&dswid=4822]
• Johansson, Kajsa (2019) Transcription of Historical Encrypted Manuscripts: Evaluation of an Automatic Interactive Transcription Tool. Bachelor's thesis in Language Technology, Uppsala University, Sweden. [http://uu.diva-portal.org/smash/get/diva2:1323635/FULLTEXT01.pdf]
• Tudor, Crina (2019) Studies of Cipher Keys from the 16th Century: Transcription, Systematisation and Analysis. Master's thesis in Language Technology, Uppsala University, Sweden. [http://uu.diva-portal.org/smash/get/diva2:1369404/FULLTEXT01.pdf]

Pop Science By/About Us 

• How do we crack codes? A conversation about the fascination with scientific challenges and what unites researchers who decipher historical codes, today's digital codes, and the mutations in our genes. Panel discussion with David Olgart (KTH) and Richard Rosenqvist Brandell (Karolinska Institute). Moderator: Cissi Askvall, Swedish Research Council. Nobel Calling Stockholm 2024. Nobel Prize Museum. October 7, 2024. https://nobelprizemuseum.se/sa-knacker-vi-koderna-om-sokandet-efter-ny-kunskap/

• The linguist who cracks historical riddles, article and film (2024) by Stockholm University: https://www.su.se/english/news/the-computational-linguist-who-cracks-historical-riddles-1.748013

• New publication gives an introduction to historical cryptology (Ny publikation ger en introduktion till Historisk kryptologi) (2024) by Stockholm University: https://www.su.se/institutionen-for-lingvistik/nyheter/ny-publikation-ger-en-introduktion-till-historisk-kryptologi-1.713255

• Codebreakers find and decode lost letters of Mary, Queen of Scots (2023) by Ashley Strickland, CNN: https://edition.cnn.com/2023/02/07/world/mary-queen-of-scots-lost-letters-scn/index.html

• Code breakers discover – and decipher – Long-Lost Letters by Mary, Queen of Scots (2023) by Meilan Solly, Smithsonian magazine: https://www.smithsonianmag.com/history/codebreakers-discoverand-decipherlong-lost-letters-by-mary-queen-of-scots-180981613/

• How scientists are cracking historical codes to reveal lost secrets (2023), in New Scientist by Joshua Howgego: https://www.newscientist.com/article/mg25934570-900-how-scientists-are-cracking-historical-codes-to-reveal-lost-secrets/

• Chiffer – en historisk gåta, article in GU Journalen (2023/3) by Eva Lundgren: https://issuu.com/universityofgothenburg/docs/guj3-2023/46

• Kopal, N. and Dinnissen, J. (2022) „Konzerngeheimnisse: Entschlüsselt: Ein Brief der Niederländischen Ostindien-Kompanie “. Published in c't 16/22 on page 130. Outreach: https://www.heise.de/select/ct/2022/16/2208814061698077413

• Kopal, N. and Megyesi, B. (2022) „Die Kryptografen des Papstes: Entschlüsselt: Geheime Nachrichten aus dem Vatikan“. Published in c't 3/22 on page 134. Outreach: https://www.heise.de/select/ct/2022/3/2118013133459359622

• Kopal, N. and Waldispühl, M. (2022). „Kryptische Propaganda: Entschlüsselt: Briefe von Kaiser Maximilian II“. Published in c't 4/22 on page 130. Outreach: https://www.heise.de/select/ct/2022/4/2134408482322873782

• Kopal, N. and Esslinger, B. (2021). „Krypto ganz unkryptisch – Mit CrypTool 2 moderne Kryptografie ausprobieren und verstehen“. Published in c't 15/21 on page 142. Outreach: https://www.heise.de/ratgeber/Moderne-Kryptografie-ausprobieren-und-verstehen-mit-CrypTool-2-6129885.html

• Tillsammans knäcker forskarna historisk kod in Curie (2019) by Carina Järvenhag: https://www.tidningencurie.se/nyheter/tillsammans-knacker-forskarna-historisk-kod

• Historiska chiffer ska knäckas med algoritmer, in Populär historia (2019) by Anna Larsdotter: https://popularhistoria.se/vetenskap/forskare-avslojar-historiska-chiffer

• Kryptologer från hela världen träffas på historisk konferens in Sveriges Radio P4 Uppland: https://sverigesradio.se/artikel/6980215