Data encrypted in C# is 1 byte too long to be decrypted in Java

Question

I have a server written in Java which sends converts its RSA key to the XML format used by .NET before sending it to the client:

public String getPublicKeyXM         


        

Answer 1

I found the problem. The BigInteger's toByteArray() function included a leading zero for some reason. I just removed the leading zeros from the array and it now works like a charm!