public static string generateFileMD5(string fileName, bool upperOrLower = true)
{
FileStream file = new FileStream(fileName, FileMode.Open);
HashAlgorithm algorithm = MD5.Create();
byte[] md5Bytes = algorithm.ComputeHash(file);
return(BinaryUtility.bytesToHEXString(md5Bytes, false, upperOrLower));
}
protected string getMD5(string source)
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] sourceBytes = BinaryUtility.stringToBytes(source);
byte[] result = md5.ComputeHash(sourceBytes);
string md5Value = BinaryUtility.bytesToHEXString(result, false, false);
return(md5Value);
}
public PARSE_RESULT parseData(byte[] data, int count)
{
// 长度不够包头时,数据不足
if (count < mHeaderLength)
{
return(PARSE_RESULT.PR_NOT_ENOUGH);
}
// 确保一些固定数值是正确的
if (data[0] != mReportID || data[1] != mMagicByte || data[2] != mVersion || data[mHeaderLength - 1] != mSeqID)
{
UnityUtility.logInfo("data : " + BinaryUtility.bytesToHEXString(data, true, true, count));
UnityUtility.logInfo("数据错误");
return(PARSE_RESULT.PR_ERROR);
}
int offset = sizeof(byte) + sizeof(byte) + sizeof(byte);
ushort payloadLength = (ushort)BinaryUtility.readShort(data, ref offset, true);
// 长度不够记录的数据长度,数据不足
if (payloadLength > count - mHeaderLength)
{
return(PARSE_RESULT.PR_NOT_ENOUGH);
}
ushort crc = (ushort)BinaryUtility.readShort(data, ref offset, true);
// 校验失败,数据错误
ushort dataCRC16 = BinaryUtility.crc16(0xFF, data, payloadLength, mHeaderLength);
if (crc != dataCRC16)
{
UnityUtility.logInfo("校验失败");
return(PARSE_RESULT.PR_ERROR);
}
// 只有解析成功时,才保存数据
mPayloadLength = payloadLength;
mCRC16 = crc;
return(PARSE_RESULT.PR_SUCCESS);
}