/// <summary>
/// attempts to read a file into cryptonote format
/// </summary>
/// <param name="fileName">full path to file</param>
/// <param name="note">output note</param>
/// <returns>true if successful</returns>
public bool TryRead(string fileName, out CryptoNote note)
{
using var fileStream = File.OpenRead(fileName);
bool success;
index = 0;
try
{
note = new CryptoNote(0);
var fileSize = new FileInfo(fileName).Length;
var version = BitConverter.ToUInt16(ReadBytes(fileStream, VersionLength));
if (version != Constants.ProtocolVersion)
{
return(false);
}
note.Salt = ReadBytes(fileStream, SaltLength);
note.Iterations = BitConverter.ToInt32(ReadBytes(fileStream, 4));
note.InitializationVector = ReadBytes(fileStream, IvLength);
note.ValidityCheck = ReadBytes(fileStream, ValidityLength);
note.Cipher = ReadBytes(fileStream, (int)(fileSize - index));
success = true;
}
finally
{
fileStream.Close();
}
return(success);
}
/// <summary>
/// Creates of overwrites a fileContents at the specified path with encrypted data in the supplied cryptoNoteFile
/// </summary>
/// <param name="fileContentsContents"></param>
/// <param name="path"></param>
public static void SaveToFile(CryptoNote note, string path)
{
using var fileStream = File.Open(path, FileMode.OpenOrCreate);
var fileContents = new object[]
{
Constants.ProtocolVersion,
note.Salt,
note.Iterations,
note.InitializationVector,
note.ValidityCheck,
note.Cipher,
};
foreach (var item in fileContents)
{
WriteToFile(fileStream, item);
}
fileStream.Close();
}