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the claim

The Enigma machine's encryption was broken by the Allies.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that the Enigma machine's encryption was broken by the Allies?

Yes. Multiple reference and scholarly sources state that the Enigma cipher was broken, with several explicitly crediting Allied cryptanalysts (including British and Polish efforts) with breaking it.

Verdict: SUPPORTED · 8 sources for, 0 against · Last checked

Evidence for · 8
Encryption
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Encryption. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Encryption

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More for · 7
The Enigma machine
2017
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Greenberg, J. (2017). The Enigma machine. doi.org. https://doi.org/10.1093/oso/9780198747826.003.0018

Did the German Enigma machine use multiple encryption keys?
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Did the German Enigma machine use multiple encryption keys?. (n.d.). history.stackexchange.com. https://history.stackexchange.com/questions/12564

Understanding the Enigma Machine: Mechanism, History, and Cryptanalysis
2026
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Avijit, R., Milla, W., & Fabian, V. (2026). Understanding the Enigma Machine: Mechanism, History, and Cryptanalysis. zenodo.org. https://doi.org/10.5281/zenodo.19055461

From Poznań to Bletchley Park : the history of cracking the ENIGMA machine
2017
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From Poznań to Bletchley Park : the history of cracking the ENIGMA machine. (2017). shs.hal.science. https://shs.hal.science/halshs-03949790v1

Cryptanalysis of the Enigma - Wikipedia
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Cryptanalysis of the Enigma - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Cryptanalysis_of_the_Enigma

Cryptography, Information Theory, and Error-Correction
2005
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Bruen, A. A. & Forcinito, M. A. (2005). Cryptography, Information Theory, and Error-Correction. books.google.com. http://books.google.com/books?id=BtFQAAAAMAAJ&dq=The+Enigma+machine%27s+encryption+was+broken+by+the+Allies.&hl=&as_pt=BOOKS&source=gbs_api

No Greater Ally
2011
Get citation
Koskodan, K. K. (2011). No Greater Ally. play.google.com. https://play.google.com/store/books/details?id=4auHCwAAQBAJ&source=gbs_api

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