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Merge pull request #894 from krupawan5618/patch-7

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Ch. 05 - A Tip Box that details sufficiency of 12 words for mnemonic phrase  generation
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Will Binns 2021-04-08 12:46:00 +02:00 committed by GitHub
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@ -259,6 +259,11 @@ luggage oxygen faint major edit measure invite love trap field dilemma oblige+
+5f1e0deaa082df8d487381379df848a6ad7e98798404+
|=======
[TIP]
====
Many wallets do not allow for the creation of wallets with more than a 12 word mnemonic phrase. You will notice from the tables above that despite the unique lengths of entropy input, the seed size remains the same (512 bits). From a security perspective, the amount of entropy actually used for the production of HD wallets is roughly 128 bits, which equals 12 words. Providing more than 12 words produces additional entropy which is unnecessary, and this _unused_ entropy is not used for the derivation of the seed in the way that one might intially suspect. From a usability perspective, 12 words is also easier to write down, back up, and store.
====
[[mnemonic_passphrase]]
===== Optional passphrase in BIP-39