| 開發人員: | Philipp Kutsch (2) | ||
| 價錢: | 免費 | ||
| 排名: | 0 | ||
| 評測: | 0 寫評論 | ||
| 清單: | 0 + 0 | ||
| 點數: | 0 + 0 ¡ | ||
| Google Play | |||
描述
✓ Interactive cipher wheel
✓ Fully configurable
✓ Share configuration with others
✓ Presets (M94, Jefferson-36)
Historic Background
Thomas Jefferson (1743-1826), the third President of the United States, is credited with the invention of one of the most advanced cryptographic devices of his time, the so-called wheel cypher.
Devised in the early-to-mid 1790s while Jefferson served as the US Secretary of State, it consisted of a system of 36 interchangeable wooden disks revolving around a central spindle, with each disk imprinted randomly with the 26 letters of the English alphabet. With the device, a 36-letter message could be encoded on one row formed by the disks and then one of the 25 remaining rows of the disk shared with a correspondent having an identical wheel cypher and a key to the order of the spindle disks.
In the late-1800s, the same system of disks was independently invented by Etienne Bazeries, a French military cryptanalyst, and subsequently formed the basis of the M-94 cipher machine used widely by US armed forces beginning in the early 1920s until the early 1940s.
Today, in addition to surplus US M-94 cipher machines collected by amateur cryptologists worldwide, a popular 12-disk, 27-character version of the Jefferson wheel cypher is sold as a wooden educational toy by the gift shops of a number of early American historical sites, including Thomas Jefferson's Monticello.
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新功能
- 版本: 1.0.5
- 發佈日期:
- - Compatibility with Android 16 (36) and new page size requirement.
- Small improvements
價錢
- 今天: 免費
- 最小值: 免費
- 最大值: 免費
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- Philipp Kutsch
- 平台: Android 應用程式 (2)
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其他資訊
- 版本: 1.0.5
- ID: net.monoflop.jeffersondisk
- 類別 :
Android 應用程式›工具 - OS:
Android 7.0 - 大小:
24 Mb - 內容分級:
Everyone - Google Play 評分:
0 - 發佈日期:
- 發行日期:
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