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Additional information and downloads to the Cryptologia article - Breaking short Vigenere ciphers |
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This page contains additional information, statistics and the detailed data on which my article in Cryptologia (Volume 32 Issue 4 Oktober 2008) "Breaking short Vigenere ciphers" is based. |
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ARTICLE
Link to the article at Informa World |
| ===Cryptologia Volume 32 Issue 4=== |
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TOOL
This online tool allows to break short Vigenere ciphers. It is a proof-of-concept and supports only english and german language as well as keywords and texts with a minimum length of four characters. |
| ===Online tool=== |
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STATISTIC
The statistic on wich position the digrams and trigrams were sorted in over 110,000 different ciphers generated from texts by Franz Kafka, William Shakespeare, Charles Dickens and Mark Twain. As MS Excel only supports 64,000 lines, the csv data was split into two files. |
| ===Download=== |
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AGGREGATION OF DATA
The aggregation of the statistic with explanation and graphs as MS Excel file. |
| ===Download=== |
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GRAPHS and PICTURES
The pictures in printable quality (c) Tobias Schrödel |
| Picture 1 (18.5 MB TIFF) - Cover and 1st page of Kasiski's Geheimschriften und die Dechiffrirkunst 1863 |
| Picture 2 (15.3 MB TIFF) - Page 41 of Kasiski's book with details on how to find the key length |
| Picture 3 (1.7 MB TIFF) - detail of Andreas Figl's manuscript Systeme des Dechiffrierens 1927 |
| Picture 4 (2.6 MB TIFF) - Statistic of leading digrams |
| Picture 5 (1.0 MB TIFF) - Digraph of digrams |
| Picture 6 (1.8 MB TIFF) - table of different short ciphers and the di-/trigram positions |
| Statistic (0,2 MB PDF) - Digrams at the beginning words |
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