System.Security.Cryptography.RSA.EncryptValue C# (CSharp) Method

        public virtual byte[] EncryptValue(byte[] rgb)
        {
            throw new NotSupportedException(SR.NotSupported_Method); // Same as Desktop
        }

        internal static byte[] RsaOaepEncrypt(RSA rsa, HashAlgorithm hash, PKCS1MaskGenerationMethod mgf, RandomNumberGenerator rng, byte[] data)
        {
            int length1 = rsa.KeySize / 8;
            int length2 = hash.HashSize / 8;

            if (data.Length + 2 + 2 * length2 > length1)
            {
                throw new CryptographicException(string.Format((IFormatProvider)null, Environment.GetResourceString("Cryptography_Padding_EncDataTooBig"), (object)(length1 - 2 - 2 * length2)));
            }
            hash.ComputeHash(EmptyArray <byte> .Value);
            byte[] rgbSeed = new byte[length1 - length2];
            Buffer.InternalBlockCopy((Array)hash.Hash, 0, (Array)rgbSeed, 0, length2);
            byte[] numArray1 = rgbSeed;
            int    index1    = numArray1.Length - data.Length - 1;
            int    num       = 1;

            numArray1[index1] = (byte)num;
            Buffer.InternalBlockCopy((Array)data, 0, (Array)rgbSeed, rgbSeed.Length - data.Length, data.Length);
            byte[] numArray2 = new byte[length2];
            rng.GetBytes(numArray2);
            byte[] mask1 = mgf.GenerateMask(numArray2, rgbSeed.Length);
            for (int index2 = 0; index2 < rgbSeed.Length; ++index2)
            {
                rgbSeed[index2] = (byte)((uint)rgbSeed[index2] ^ (uint)mask1[index2]);
            }
            byte[] mask2 = mgf.GenerateMask(rgbSeed, length2);
            for (int index2 = 0; index2 < numArray2.Length; ++index2)
            {
                numArray2[index2] ^= mask2[index2];
            }
            byte[] rgb = new byte[length1];
            Buffer.InternalBlockCopy((Array)numArray2, 0, (Array)rgb, 0, numArray2.Length);
            Buffer.InternalBlockCopy((Array)rgbSeed, 0, (Array)rgb, numArray2.Length, rgbSeed.Length);
            return(rsa.EncryptValue(rgb));
        }