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BIP85: replace Base64 by Base85 in PWD BASE85 section #1939

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Merged
jonatack merged 2 commits into from
Aug 21, 2025
Merged

BIP85: replace Base64 by Base85 in PWD BASE85 section #1939

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2fc8da8
fix: replace Base64 by Base85 encoding in PWD BASE85 section
ethicnology Aug 21, 2025
3e9befd
refactor: unify capitalization
ethicnology Aug 21, 2025
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6 changes: 3 additions & 3 deletions bip-0085.mediawiki
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Original file line number Diff line number Diff line change
Expand Up @@ -292,11 +292,11 @@ The derivation path format is: <code>m/83696968'/707764'/{pwd_len}'/{index}'</co
`20 <= pwd_len <= 86`

[https://datatracker.ietf.org/doc/html/rfc4648 Base64] encode all 64 bytes of entropy.
Remove any spaces or new lines inserted by Base64 encoding process. Slice base64 result string
Remove any spaces or new lines inserted by Base64 encoding process. Slice Base64 result string
on index 0 to `pwd_len`. This slice is the password. As `pwd_len` is limited to 86, passwords will not contain padding.

Entropy calculation:<br>
R = 64 (base64 - do not count padding)<br>
R = 64 (Base64 - do not count padding)<br>
L = pwd_len<br>
Entropy = log2(R ** L)<br>

Expand Down Expand Up @@ -330,7 +330,7 @@ The derivation path format is: <code>m/83696968'/707785'/{pwd_len}'/{index}'</co
`10 <= pwd_len <= 80`

Base85 encode all 64 bytes of entropy.
Remove any spaces or new lines inserted by Base64 encoding process. Slice base85 result string
Remove any spaces or new lines inserted by Base85 encoding process. Slice Base85 result string
on index 0 to `pwd_len`. This slice is the password. `pwd_len` is limited to 80 characters.

Entropy calculation:<br>
Expand Down