Classical ciphers

M-94

The M-94 was a piece of cryptographic equipment used by the United States Army, consisting of several lettered discs arranged as a cylinder. It was also employed by the US Navy, under the name CSP 488. The device was conceived by Colonel and then developed by Major Joseph Mauborgne in 1917; based on a system invented by Thomas Jefferson and Etienne Bazeries. Officially adopted in 1922, it remained in use until circa 1942, when it was replaced by more complex and secure electromechanical rotor machines, particularly the M-209. (Wikipedia).

M-94
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FCM 708 HW 3 pt 2

From playlist 708 hw 3

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212336448592654

From playlist everything

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PHYS102x Credits (2014)

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From playlist Off Topic

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MSR Houston CCW Dec 8 2018 911s

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From playlist In my Freetime...

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From playlist Elementary Number Theory

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This video explains how to solve a radical equation with two square roots. http://mathispower4u.com

From playlist Solving Radical Equations

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Exploiting ms08-067

Credits go out to the makers of Fast-Track See the webpage at: http://www.thepentest.com/

From playlist Fast-Track

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d14

Available at http://mathartfun.com/DiceLabDice.html

From playlist Dice

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From playlist NEW SPEC (9-1) GCSE MOCK PAPERS

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From playlist Multimeter reviews, buyers guide and comparisons.

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From playlist The New Lab

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From playlist Solve One and Two Step Equations

Related pages

Classical cipher | Key size | Plaintext | Ciphertext | Circumference | Factorial | Key (cryptography)