/// <summary>
/// Parsing header data from encrypted file.
/// <param name="data">Raw data.</param>
/// <param name="offset">Offset from the start of the raw data <see cref="byte"/>[].</param>
/// </summary>
public void ParseStandardInformation(byte[] data, int offset)
{
if (data.Length < offset)
{
throw new Exception("File is corrupted.");
}
// position
Type = (AttributeType)BitConverter.ToUInt32(data, offset); // 0
if (Type != AttributeType.STANDARD_INFORMATION)
{
throw new Exception("File is corrupted.");
}
TotalLength = BitConverter.ToUInt32(data, offset + 4); // 4
CreationTime = EnigmaEfsUtility.ConverteToWinTime(data, offset + 8); // 8
OwnerId = BitConverter.ToUInt32(data, offset + 16); // 16
AlteredTime = EnigmaEfsUtility.ConverteToWinTime(data, offset + 20); // 20
ATimeUserId = BitConverter.ToUInt32(data, offset + 28); // 28
ReadTime = EnigmaEfsUtility.ConverteToWinTime(data, offset + 32); // 32
RTimeUserId = BitConverter.ToUInt32(data, offset + 40); // 40
}
/// <summary>
/// Writting Standard Information header to <see cref="byte"/>[].
/// </summary>
public byte[] UnparseStandardInformation()
{
var standInformationHeader = new byte[GetSaveLength()];
// position
Buffer.BlockCopy(BitConverter.GetBytes((uint)Type), 0, standInformationHeader, 0, 4); // 0
Buffer.BlockCopy(BitConverter.GetBytes(TotalLength), 0, standInformationHeader, 4, 4); // 4
EnigmaEfsUtility.ConverterFomWinTime(standInformationHeader, 8, CreationTime); // 8
Buffer.BlockCopy(BitConverter.GetBytes(OwnerId), 0, standInformationHeader, 16, 4); // 16
EnigmaEfsUtility.ConverterFomWinTime(standInformationHeader, 20, AlteredTime); // 20
Buffer.BlockCopy(BitConverter.GetBytes(ATimeUserId), 0, standInformationHeader, 28, 4); // 28
EnigmaEfsUtility.ConverterFomWinTime(standInformationHeader, 32, ReadTime); // 32
Buffer.BlockCopy(BitConverter.GetBytes(RTimeUserId), 0, standInformationHeader, 40, 4); // 40
return(standInformationHeader);
}
