Why RSA encryption can return different results with C# and Java?

Question

I using:

• c#: RSACryptoServiceProvider
• JAVA: KeyFactory.getInstance(\"RSA\")+Cipher

I sending public key (exponent + mo

Answer 1

i hope this is helpful , in C# lough code

            byte[] rsaExp = rsaParameters.Exponent.ToByteArray();
            byte[] Modulus = rsaParameters.Modulus.ToByteArray();

            // Microsoft RSAParameters modulo wants leading zero's removed so create new array with leading zero's removed
            int Pos = 0;
            for (int i = 0; i < Modulus.Length; i++)
            {
                if (Modulus[i] == 0)
                {
                    Pos++;
                }
                else
                {
                    break;
                }
            }
            byte[] rsaMod = new byte[Modulus.Length - Pos];
            Array.Copy(Modulus, Pos, rsaMod, 0, Modulus.Length - Pos);