arno/bitcoinbook
1
0
Fork 0
mirror of https://github.com/bitcoinbook/bitcoinbook synced 2024-11-14 03:48:58 +00:00
Code Issues Releases Wiki Activity

A Tip Box that details sufficiency of 12 words

Browse Source 
Tip box regarding 12 words being sufficient entropy to the production of an HD wallet.
This commit is contained in:
krupawan5618 2021-03-28 14:35:09 -04:00 committed by GitHub
parent c6f6867e73
commit d630f26de6
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
ch05.asciidoc
View File

@ -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 pneumonic phrase. You will notice from the tables above that despite the unique amounts of entropy used, the seed remains the same length of 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 much easier to write down, back up, and store, so stick with 12 words!
====
[[mnemonic_passphrase]]
===== Optional passphrase in BIP-39