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The spec says it uses 128-bit AES. https://www.microsoft.com/hardware/en-us/b/sculpt-ergonomic-...

I couldn't find anything on Google to contradict that. Link?

I'm always cautious of simplified specs like that. What's the block mode for AES? How does the key exchange work? What's the entropy source for key generation? This is a keyboard, after all.

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