arno/bitcoinbook
1
0
Fork 0
mirror of https://github.com/bitcoinbook/bitcoinbook synced 2024-11-26 18:08:31 +00:00
Code Issues Releases Wiki Activity

Edited ch05.asciidoc with Atlas code editor

Browse Source
This commit is contained in:
nadams 2017-04-24 12:33:29 -07:00
parent 46c8a809a1
commit 5e5504e457
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
ch05.asciidoc
View File

@ -438,7 +438,7 @@ In simple terms, if you want to use the convenience of an extended public key to
((("hardened child key derivation","indexes for")))((("public child key derivation","indexes for")))The index number used in the derivation function is a 32-bit integer. To easily distinguish between keys derived through the normal derivation function versus keys derived through hardened derivation, this index number is split into two ranges. ((("child private keys","index numbers for")))Index numbers between 0 and 2^31^–1 (0x0 to 0x7FFFFFFF) are used _only_ for normal derivation. Index numbers between 2^31^ and 2^32^–1 (0x80000000 to 0xFFFFFFFF) are used _only_ for hardened derivation. Therefore, if the index number is less than 2^31^, that means the child is normal, whereas if the index number is equal or above 2^31^, the child is hardened.
To make the index number easier to read and display, the index number for hardened children is displayed starting from zero, but with a prime symbol. The first normal child key is therefore displayed as 0, whereas the first hardened child (index 0x80000000) is displayed as pass:[<span class="markup">0&#x2032;</span>]. In sequence then, the second hardened key would have index 0x80000001 and would be displayed as 1&#x2032;, and so on. When you see an HD wallet index i', that means 2^31^+i.
To make the index number easier to read and display, the index number for hardened children is displayed starting from zero, but with a prime symbol. The first normal child key is therefore displayed as 0, whereas the first hardened child (index 0x80000000) is displayed as 0++'++. In sequence then, the second hardened key would have index 0x80000001 and would be displayed as 1&#x2032;, and so on. When you see an HD wallet index i', that means 2^31^+i.
===== HD wallet key identifier (path)