VAGSuite.EDC15VM_checksum.tdi41_checksum_search C# (CSharp) Метод

        public ChecksumResult tdi41_checksum_search(byte[] file_buffer, UInt32 file_size, bool debug)
        {
            if (file_buffer.Length == 0x40000) return tdi41_checksum_search_256kb(file_buffer, file_size, debug);
            else if (file_buffer.Length == 0x80000) return tdi41_checksum_search_512kb(file_buffer, file_size, debug);
            else return tdi41_checksum_search_1024kb(file_buffer, file_size, debug);
        }

        private ChecksumResult CalculateEDC15VMChecksum(string filename, byte[] allBytes, bool verifyOnly, out ChecksumResultDetails result)
        {
            ChecksumResult res = new ChecksumResult();

            result = new ChecksumResultDetails();
            result.CalculationResult = ChecksumResult.ChecksumFail; // default = failed
            result.TypeResult        = ChecksumType.VAG_EDC15VM_V41;
            if (/*allBytes.Length != 0x40000 && */ allBytes.Length != 0x80000 && allBytes.Length != 0x100000)
            {
                return(res);
            }
            if (allBytes.Length >= 0x80000)
            {
                if (allBytes[0x50008] == 'V' && allBytes[0x50009] == '4' && allBytes[0x5000A] == '.' && allBytes[0x5000B] == '1')
                {
                    // checksum V4.1 rev.1
                    result.TypeResult = ChecksumType.VAG_EDC15VM_V41;
                }
                else if (allBytes[0x58008] == 'V' && allBytes[0x58009] == '4' && allBytes[0x5800A] == '.' && allBytes[0x5800B] == '1')
                {
                    // checksum V4.1 rev.2
                    result.TypeResult = ChecksumType.VAG_EDC15VM_V41V2;
                }
            }
            //allBytes = reverseEndian(allBytes);
            EDC15VM_checksum chks = new EDC15VM_checksum();

            if (result.TypeResult == ChecksumType.VAG_EDC15VM_V41)
            {
                res = chks.tdi41_checksum_search(allBytes, (uint)allBytes.Length, false);
            }
            else
            {
                res = chks.tdi41v2_checksum_search(allBytes, (uint)allBytes.Length, false);
            }
            result.NumberChecksumsTotal = chks.ChecksumsFound;
            result.NumberChecksumsFail  = chks.ChecksumsIncorrect;
            result.NumberChecksumsOk    = chks.ChecksumsFound - chks.ChecksumsIncorrect;
            if (res == ChecksumResult.ChecksumOK)
            {
                Console.WriteLine("Checksum V4.1 matched");
                result.CalculationOk = true;
            }
            else if (res == ChecksumResult.ChecksumFail)
            {
                Console.WriteLine("UpdateChecksum: Checksum failed " + filename);
                if (!verifyOnly)
                {
                    File.WriteAllBytes(filename, allBytes);
                    result.CalculationOk = true;
                    Console.WriteLine("UpdateChecksum: Checksum fixed");
                }
            }
            else if (res == ChecksumResult.ChecksumTypeError)
            {
                result.TypeResult = ChecksumType.VAG_EDC15VM_V41_2002;
                EDC15VM_checksum chks2002 = new EDC15VM_checksum();
                allBytes = File.ReadAllBytes(filename);
                ChecksumResult res2002 = chks2002.tdi41_2002_checksum_search(allBytes, (uint)allBytes.Length, false);
                result.NumberChecksumsTotal = chks2002.ChecksumsFound;
                result.NumberChecksumsFail  = chks2002.ChecksumsIncorrect;
                result.NumberChecksumsOk    = chks2002.ChecksumsFound - chks2002.ChecksumsIncorrect;

                if (res2002 == ChecksumResult.ChecksumOK)
                {
                    Console.WriteLine("Checksum 2002 matched " + filename);
                    result.CalculationOk = true;
                }
                else if (res2002 == ChecksumResult.ChecksumFail)
                {
                    Console.WriteLine("UpdateChecksum: Checksum 2002 failed " + filename);
                    if (!verifyOnly)
                    {
                        File.WriteAllBytes(filename, allBytes);
                        result.CalculationOk = true;
                        Console.WriteLine("UpdateChecksum: Checksum fixed");
                    }
                }
                else if (res2002 == ChecksumResult.ChecksumTypeError)
                {
                    // unknown checksum type
                    result.CalculationOk     = false;
                    result.CalculationResult = ChecksumResult.ChecksumTypeError;
                    result.TypeResult        = ChecksumType.Unknown;
                }
            }
            return(res);
        }