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Merged
luke-jr merged 1 commit into from
Jun 29, 2023
Merged

bip85 passwords #1344

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80 changes: 78 additions & 2 deletions bip-0085.mediawiki
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Original file line number Diff line number Diff line change
Expand Up @@ -106,7 +106,7 @@ OUTPUT

* AirGap Vault: [https://github.com/airgap-it/airgap-vault/commit/d64332fc2f332be622a1229acb27f621e23774d6]

btc_hd_wallet: [https://github.com/scgbckbone/btc-hd-wallet]
* btc_hd_wallet: [https://github.com/scgbckbone/btc-hd-wallet]

==Applications==

Expand Down Expand Up @@ -244,7 +244,7 @@ INPUT:

OUTPUT
* DERIVED ENTROPY=ead0b33988a616cf6a497f1c169d9e92562604e38305ccd3fc96f2252c177682
* DERIVED WIF=xprv9s21ZrQH143K2srSbCSg4m4kLvPMzcWydgmKEnMmoZUurYuBuYG46c6P71UGXMzmriLzCCBvKQWBUv3vPB3m1SATMhp3uEjXHJ42jFg7myX
* DERIVED XPRV=xprv9s21ZrQH143K2srSbCSg4m4kLvPMzcWydgmKEnMmoZUurYuBuYG46c6P71UGXMzmriLzCCBvKQWBUv3vPB3m1SATMhp3uEjXHJ42jFg7myX

===HEX===
Application number: 128169'
Expand All @@ -262,6 +262,82 @@ INPUT:
OUTPUT
* DERIVED ENTROPY=492db4698cf3b73a5a24998aa3e9d7fa96275d85724a91e71aa2d645442f878555d078fd1f1f67e368976f04137b1f7a0d19232136ca50c44614af72b5582a5c

===PWD BASE64===
Application number: 707764'

The derivation path format is: <code>m/83696968'/707764'/{pwd_len}'/{index}'</code>

`20 <= pwd_len <= 86`

[https://datatracker.ietf.org/doc/html/rfc4648 Base64] encode the all 64 bytes of entropy.
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>
L = pwd_len<br>
Entropy = log2(R ** L)<br>

{| class="wikitable" style="margin:auto"
! pwd_length !! (cca) entropy
|-
| 20 || 120.0
|-
| 24 || 144.0
|-
| 32 || 192.0
|-
| 64 || 384.0
|-
| 86 || 516.0
|}

INPUT:
* MASTER BIP32 ROOT KEY: xprv9s21ZrQH143K2LBWUUQRFXhucrQqBpKdRRxNVq2zBqsx8HVqFk2uYo8kmbaLLHRdqtQpUm98uKfu3vca1LqdGhUtyoFnCNkfmXRyPXLjbKb
* PATH: m/83696968'/707764'/21'/0'

OUTPUT
* DERIVED ENTROPY=d7ad61d4a76575c5bad773feeb40299490b224e8e5df6c8ad8fe3d0a6eed7b85ead9fef7bcca8160f0ee48dc6e92b311fc71f2146623cc6952c03ce82c7b63fe
* DERIVED PWD=dKLoepugzdVJvdL56ogNV

===PWD BASE85===
Application number: 707785'

The derivation path format is: <code>m/83696968'/707785'/{pwd_len}'/{index}'</code>

`10 <= pwd_len <= 80`

Base85 encode the all 64 bytes of entropy.
Remove any spaces or new lines inserted by Base64 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>
R = 85<br>
L = pwd_len<br>
Entropy = log2(R ** L)<br>

{| class="wikitable" style="margin:auto"
! pwd_length !! (cca) entropy
|-
| 10 || 64.0
|-
| 15 || 96.0
|-
| 20 || 128.0
|-
| 30 || 192.0
|-
| 20 || 512.0
|}

INPUT:
* MASTER BIP32 ROOT KEY: xprv9s21ZrQH143K2LBWUUQRFXhucrQqBpKdRRxNVq2zBqsx8HVqFk2uYo8kmbaLLHRdqtQpUm98uKfu3vca1LqdGhUtyoFnCNkfmXRyPXLjbKb
* PATH: m/83696968'/707785'/12'/0'

OUTPUT
* DERIVED ENTROPY=f7cfe56f63dca2490f65fcbf9ee63dcd85d18f751b6b5e1c1b8733af6459c904a75e82b4a22efff9b9e69de2144b293aa8714319a054b6cb55826a8e51425209
* DERIVED PWD=_s`{TW89)i4`

===RSA===

Application number: 828365'
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