fix padding (#20)

d4rp4t · web-flow · commit fbb88e91e40b · 2025-11-08T16:21:45.000+01:00
diff --git a/DotNut/NUT13/BIP32.cs b/DotNut/NUT13/BIP32.cs
@@ -55,6 +55,12 @@ public HdKey Derive(HdKey parent, KeyPathElement index)
             }
 
             var keyBytes = res.ToByteArray(true, true);
+            if (keyBytes.Length < 32)
+            {
+                var paddedKey = new byte[32];
+                keyBytes.CopyTo(paddedKey, 32 - keyBytes.Length);
+                keyBytes = paddedKey;
+            }
             return new HdKey(keyBytes, cc);
         }
     }

Original file line number	Diff line number	Diff line change
`@@ -55,6 +55,12 @@ public HdKey Derive(HdKey parent, KeyPathElement index)`
`55`	`55`	`}`
`56`	`56`
`57`	`57`	`var keyBytes = res.ToByteArray(true, true);`
	`58`	`+ if (keyBytes.Length < 32)`
	`59`	`+ {`
	`60`	`+ var paddedKey = new byte[32];`
	`61`	`+ keyBytes.CopyTo(paddedKey, 32 - keyBytes.Length);`
	`62`	`+ keyBytes = paddedKey;`
	`63`	`+ }`
`58`	`64`	`return new HdKey(keyBytes, cc);`
`59`	`65`	`}`
`60`	`66`	`}`