Org.BouncyCastle.Security.SecureRandom.NextInt C# (CSharp) Method

		public virtual int NextInt()
        {
			byte[] intBytes = new byte[4];
            NextBytes(intBytes);

			int result = 0;
            for (int i = 0; i < 4; i++)
            {
                result = (result << 8) + (intBytes[i] & 0xff);
            }

			return result;
        }

 public static EncryptionResult EncryptMessage(byte[] userKey, byte[] userSecret, byte[] data, ushort padding = 0, bool randomisePadding = false)
 {
     var Random = new SecureRandom();
     var Salt = new byte[16];
     Random.NextBytes(Salt);
     var Curve = ECNamedCurveTable.GetByName("prime256v1");
     var Spec = new ECDomainParameters(Curve.Curve, Curve.G, Curve.N, Curve.H, Curve.GetSeed());
     var Generator = new ECKeyPairGenerator();
     Generator.Init(new ECKeyGenerationParameters(Spec, new SecureRandom()));
     var KeyPair = Generator.GenerateKeyPair();
     var AgreementGenerator = new ECDHBasicAgreement();
     AgreementGenerator.Init(KeyPair.Private);
     var IKM =
         AgreementGenerator.CalculateAgreement(new ECPublicKeyParameters(Spec.Curve.DecodePoint(userKey), Spec));
     var PRK = GenerateHKDF(userSecret, IKM.ToByteArrayUnsigned(),
         Encoding.UTF8.GetBytes("Content-Encoding: auth\0"), 32);
     var PublicKey = ((ECPublicKeyParameters)KeyPair.Public).Q.GetEncoded(false);
     var CEK = GenerateHKDF(Salt, PRK, CreateInfoChunk("aesgcm", userKey, PublicKey), 16);
     var Nonce = GenerateHKDF(Salt, PRK, CreateInfoChunk("nonce", userKey, PublicKey), 12);
     if (randomisePadding && (padding > 0)) padding = Convert.ToUInt16(Math.Abs(Random.NextInt()) % (padding + 1));
     var Input = new byte[padding + 2 + data.Length];
     Buffer.BlockCopy(ConvertInt(padding), 0, Input, 0, 2);
     Buffer.BlockCopy(data, 0, Input, padding + 2, data.Length);
     var Cipher = CipherUtilities.GetCipher("AES/GCM/NoPadding");
     Cipher.Init(true, new AeadParameters(new KeyParameter(CEK), 128, Nonce));
     var Message = new byte[Cipher.GetOutputSize(Input.Length)];
     Cipher.DoFinal(Input, 0, Input.Length, Message, 0);
     return new EncryptionResult { Salt = Salt, Payload = Message, PublicKey = PublicKey };
 }