BIP-85 Passwords

Author: scgbckbone

bip-0085.mediawiki

@@ -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==
 
@@ -244,7 +244,7 @@ INPUT:
 
 OUTPUT
 * DERIVED ENTROPY=ead0b33988a616cf6a497f1c169d9e92562604e38305ccd3fc96f2252c177682
-* DERIVED WIF=xprv9s21ZrQH143K2srSbCSg4m4kLvPMzcWydgmKEnMmoZUurYuBuYG46c6P71UGXMzmriLzCCBvKQWBUv3vPB3m1SATMhp3uEjXHJ42jFg7myX
+* DERIVED XPRV=xprv9s21ZrQH143K2srSbCSg4m4kLvPMzcWydgmKEnMmoZUurYuBuYG46c6P71UGXMzmriLzCCBvKQWBUv3vPB3m1SATMhp3uEjXHJ42jFg7myX
 
 ===HEX===
 Application number: 128169'
@@ -262,6 +262,43 @@ INPUT:
 OUTPUT
 * DERIVED ENTROPY=492db4698cf3b73a5a24998aa3e9d7fa96275d85724a91e71aa2d645442f878555d078fd1f1f67e368976f04137b1f7a0d19232136ca50c44614af72b5582a5c
 
+===PWD===
+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
 ===RSA===
 
 Application number: 828365'