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Al-kindi_cryptographic.png ‎(327 × 328 pixels, file size: 52 KB, MIME type: image/png)

Summary

Description
English: The first page of al-Kindi's "Manuscript on Deciphering Cryptographic Messages", containing the oldest known description of cryptanalysis by frequency analysis.
Date unidentified manuscript, unknown source or date; uploaded 2007-01-11 22:23
Source en:Image:Al-kindi_cryptographic.gif
Author unknown, uploader en:User:Jidan

Licensing

Public domain

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 Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

Original upload log

Date/Time Dimensions User Comment
8 June 2008, 19:45:35 327 × 328 (48297 bytes) RsAzevedo (talk · contribs) {{Information |Description={{en|1=The first page of al-Kindi's manuscript "On Deciphering Cryptographic Messages", containing the oldest known description of cryptanalysis by frequency analysis.}} |Source=[[:en:Image:Al-kindi_cryptographic.gif]] |Author=[

Captions

The first page of al-Kindi's "Manuscript on Deciphering Cryptographic Messages"

Items portrayed in this file

depicts

media type

image/png

checksum

ee860eec1cf9d1f7f8dc583b2b83b3f87159dd4d

determination method: SHA-1

data size

53,013 byte

height

328 pixel

width

327 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current17:19, 11 August 2014Thumbnail for version as of 17:19, 11 August 2014327 × 328 (52 KB)GifTaggerBot: Converting file to superior PNG file. (Source: Al-kindi_cryptographic.gif). This GIF was problematic due to non-greyscale color table.
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