mirror of
https://github.com/OneKeyHQ/bip39.git
synced 2026-04-05 18:43:47 +00:00
Entropy library has extra comments for clarity
This commit is contained in:
@@ -7,6 +7,7 @@
|
||||
* dice 6 [1-6]
|
||||
* decimal [0-9]
|
||||
* hexadecimal [0-9A-F]
|
||||
* card [A2-9TJQK][CDHS]
|
||||
*
|
||||
* Automatically uses lowest entropy to avoid issues such as interpretting 0101
|
||||
* as hexadecimal which would be 16 bits when really it's only 4 bits of binary
|
||||
@@ -119,11 +120,11 @@ window.Entropy = new (function() {
|
||||
}
|
||||
// Assume cards are NOT replaced.
|
||||
// Additional entropy decreases as more cards are used. This means
|
||||
// entropy is measured using n!, not base^n.
|
||||
// total possible entropy is measured using n!, not base^n.
|
||||
// eg the second last card can be only one of two, not one of fifty two
|
||||
// so the added entropy for that card is only one bit at most
|
||||
if (base.asInt == 52) {
|
||||
// Get the maximum value without replacement
|
||||
// Get the maximum value WITHOUT replacement
|
||||
var totalDecks = Math.ceil(base.parts.length / 52);
|
||||
var totalCards = totalDecks * 52;
|
||||
var totalCombos = factorial(52).pow(totalDecks);
|
||||
@@ -140,7 +141,7 @@ window.Entropy = new (function() {
|
||||
if (numberOfBits < 32) {
|
||||
maxWithoutReplace = BigInteger(Math.round(Math.pow(2, numberOfBits)));
|
||||
}
|
||||
// Get the maximum value with replacement
|
||||
// Get the maximum value WITH replacement
|
||||
var maxWithReplace = BigInteger.pow(52, base.parts.length);
|
||||
// Calculate the new value by scaling the original value down
|
||||
var withoutReplace = entropyInt.multiply(maxWithoutReplace).divide(maxWithReplace);
|
||||
@@ -166,6 +167,7 @@ window.Entropy = new (function() {
|
||||
entropyHtml = entropyHtml.replace(/H/g, "<span class='card-suit heart'>\u2665</span>");
|
||||
entropyHtml = entropyHtml.replace(/S/g, "<span class='card-suit spade'>\u2660</span>");
|
||||
}
|
||||
// Return the result
|
||||
var e = {
|
||||
binaryStr: entropyBin,
|
||||
cleanStr: entropyClean,
|
||||
|
||||
Reference in New Issue
Block a user