File:Kerkhoffs.jpg
Kerkhoffs.jpg (235 × 322 pixels, file size: 31 KB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionKerkhoffs.jpg |
English: en:Auguste Kerckhoffs, 19th century Dutch cryptographer |
Date |
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Source | In David Kahn's The Codebreakers, this image is credited as: :Eugen Drezen, Historio de la Mondo Lingvo (Leipzig, 1931), 102. |
Author | Unknown authorUnknown author |
Permission (Reusing this file) |
Assumed originally taken from one of Kerckhoffs' books, so published before 1923; and assumed that photographer is not known. |
Licensing
[edit]Public domainPublic domainfalsefalse |
The copyright of this image has expired in the European Union because it was published more than 70 years ago without a public claim of authorship (anonymous or pseudonymous), and no subsequent claim of authorship was made in the 70 years following its first publication.
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To use this template, the image must meet both of the following two conditions:
Images that lack either of these two conditions should not use this template. Reasonable evidence must be presented that the author's name (e.g., the original photographer, portrait painter) was not published with a claim of copyright in conjunction with the image within 70 years of its original publication. Works which had not entered Public Domain in their country in 1996 that were uploaded before 1 March 2012 should be marked additionally with {{Not-PD-US-URAA}}. Note: In some countries anonymous works are copyrighted until 70 years after the death of the author if the author's identity became public in any way during the original term. In Germany this applies to certain works published before July 1, 1995; see Übergangsrecht.English | español | français | italiano | македонски | മലയാളം | sicilianu | slovenščina | 中文 | +/− |
Public domainPublic domainfalsefalse |
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Kerkhoffs.jpg |
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:55, 5 October 2005 | 235 × 322 (31 KB) | Matt Crypto (talk | contribs) | Uncropped version | |
03:16, 5 October 2005 | 124 × 146 (7 KB) | Gene.arboit (talk | contribs) | Auguste Kerckhoffs, 19th century Dutch cryptographer This photograph is public domain because it was taken before 1923. Kerckhoffs, AugusteKerckhoffs, Auguste[[Category:Black and white photographic portr |
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