invalid derivation result for specific path about bip32-dart

[keninqiu]

When do
Uint8List dt = toBuffer((dd + tt) % n);
It will happened the length of dt is smaller than 32.
We have to make sure the length is always 32.

I added
if(dt.length < 32) {
Uint8List newDt = new Uint8List(32);
for(var i = 0; i < 32 - dt.length; i++) {
newDt[i] = 0x00;
}
for(var i = 0; i < dt.length; i++) {
newDt[32-dt.length + i] = dt[i];
}
dt = newDt;
}
to ecurve.dart
It will fix this issue.
I already made a pull request.

[asssaf]

both libraries agree on the result of m/1'/199007533'/627785449'/1521366139'/2' so it looks like the difference is that this library skips the 1' index and the others don't.

[rafa-js]

Can you see if m/1'/199007533'/627785449'/1521366139' matches with m/1'/199007533'/627785449'/1521366140'?

It's what happen to me. So I guess the issue has something to do with this line: https://github.com/anicdh/bip32-dart/blob/master/lib/src/bip32_base.dart#L103

Looking deeper.

[asssaf]

Can you see if m/1'/199007533'/627785449'/1521366139' matches with m/1'/199007533'/627785449'/1521366140'?

That pair yields different results for me

[longhoangwkm]

Thanks everyone for report and helping