System.Security.Cryptography.RSAImplementation.RSAOpenSsl.Decrypt C# (CSharp) Метод

        public override byte[] Decrypt(byte[] data, RSAEncryptionPadding padding)
        {
            if (data == null)
                throw new ArgumentNullException(nameof(data));
            if (padding == null)
                throw new ArgumentNullException(nameof(padding));

            Interop.Crypto.RsaPadding rsaPadding = GetInteropPadding(padding);
            SafeRsaHandle key = _key.Value;
            CheckInvalidKey(key);

            byte[] buf = new byte[Interop.Crypto.RsaSize(key)];

            int returnValue = Interop.Crypto.RsaPrivateDecrypt(
                data.Length,
                data,
                buf,
                key,
                rsaPadding);

            CheckReturn(returnValue);

            // If the padding mode is RSA_NO_PADDING then the size of the decrypted block
            // will be RSA_size, so let's just return buf.
            //
            // If any padding was used, then some amount (determined by the padding algorithm)
            // will have been reduced, and only returnValue bytes were part of the decrypted
            // body, so copy the decrypted bytes to an appropriately sized array before
            // returning it.
            if (returnValue == buf.Length)
            {
                return buf;
            }

            byte[] plainBytes = new byte[returnValue];
            Buffer.BlockCopy(buf, 0, plainBytes, 0, returnValue);
            return plainBytes;
        }