diff --git a/monero-wallet-generator.html b/monero-wallet-generator.html
index ef265d9..bcfe6f3 100644
--- a/monero-wallet-generator.html
+++ b/monero-wallet-generator.html
@@ -10741,9 +10741,10 @@ bC0zLjUsMjAuNGgtNkwyNDQuOCwzMTAuNkwyNDQuOCwzMTAuNnoiLz4KPC9nPgo8L3N2Zz4K">
or
@@ -11093,6 +11094,43 @@ function genwallet_prefix()
}
}
+function checkEntropy()
+{
+ var good = true;
+ var button = document.getElementById("gen_with_custom_entropy_button")
+ var user_entropy_widget = document.getElementById("user_entropy_widget")
+ var user_entropy = user_entropy_widget.value;
+ var user_entropy_warning_widget = document.getElementById("user_entropy_warning_widget")
+ if (user_entropy.length === 0) {
+ good = false;
+ button.disabled = true
+ user_entropy_warning_widget.style.display = "none"
+ return
+ }
+
+ button.disabled = false
+ var count = new Int32Array(256);
+ for (var n = 0; n < 256; ++n)
+ count[n] = 0
+ for (var n = 0; n < user_entropy.length; ++n)
+ count[user_entropy.charCodeAt(n)]++;
+ var e = 0
+ for (var n = 0; n < 256; ++n) {
+ if (count[n] > 0) {
+ var p = count[n] / user_entropy.length
+ p *= Math.log(p) / Math.log(2)
+ e -= p
+ }
+ }
+ e *= user_entropy.length
+ if (e < 128)
+ good = false
+ if (good)
+ user_entropy_warning_widget.style.display = "none"
+ else
+ user_entropy_warning_widget.style.display = "block"
+}
+
function toggle_qr()
{
address_qr_widget = document.getElementById("address_qr_widget");
diff --git a/monero-wallet-generator.html.asc b/monero-wallet-generator.html.asc
index a3a9eec..403cef8 100644
--- a/monero-wallet-generator.html.asc
+++ b/monero-wallet-generator.html.asc
@@ -1,17 +1,17 @@
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