World War I Cryptography: Secrets and Ciphers That Shaped History 🔐

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/World_War_I_cryptography


00:00:43 1 Britain
00:01:38 2 Russia
00:02:23 3 France
00:03:18 4 Germany and Austria
00:05:10 5 United States
00:06:28 6 See also



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SUMMARY
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Codes and ciphers were used extensively in World War I. The decoding by British Naval intelligence of the Zimmermann telegram helped bring the United States into the war.
Trench codes were used by field armies of most of the combatants (Americans, British, French, German) in World War I.The most commonly used codes were simple substitution codes. More important messages generally used mathematical encryption for extra security, though. The use of these codes required the distribution of codebooks to military personnel, which proved to be a security liability since these books could be stolen by enemy forces.