Clarification Regarding "invalid-digital-signature" signed with different private key Warning

[vkuttyp]

Please check this thread if it helps?

Invalid Signing Certificate warning

After extensive investation. I found the culprit was the X509SerialNumber. The issue was: my code returned a negative BigInt value for the serial number. The solution in my case was the following C# method which got the correct X509SerialNumber number. By the way this code was written for me by Google AI. public static BigInteger GetPositiveSerialNumber(X509Certificate2 certificate) { // Get the serial number as a byte array. // The GetSerialNumber() method returns the bytes in little-endia…