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I would like to know what is the strength of the encryption the Mist wallet provides with the password-protected files, and if I can just throw these files around (even uploading them to the internet) if my password is strong enough.

What I mean to ask is: If my password is 304 bit key, is the encryption on the key files is 304 as well?

Thanks.

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Mist is using go-ethereum (geth) as a backend.

Per the string in the JSON keystore file:

"cipher":"aes-128-ctr"

AES-128 = Advanced Encryption Standard

CTR = Counter Mode

"CTR is used if you want good parallelization (ie. speed), instead of CBC/OFB/CFB."

I think this cipher variable can be modified if you wanted to try something different. (More digging through go-ethereum would be needed.)

edit: Nope. It must be aes-128-ctr for now.

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  • Which means I can safely throw these files around, provided I'm the only one who knows the password, right?
    – xfotlm
    Mar 5, 2016 at 13:43
  • @xfotlm I would avoid it, but you could if you want to I guess. (Based on your risk tolerance.)
    – linagee
    Mar 5, 2016 at 14:52

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