private static async Task <PwsFileVersion> ReadVersionAsync(Stream stream)
{
if (await PwsFileV3.IsV3X(stream))
{
return(PwsFileVersion.Version3);
}
return(PwsFileVersion.Unknown);
}
/// <summary>
/// Creates a new password safe with the given file version.
/// </summary>
/// <param name="stream">Stream to write the safe to.</param>
/// <param name="passkey">Plain text password for the safe.</param>
/// <param name="version">Version of the password safe to use. The result object type depends on that.</param>
/// <returns>An empty password safe instance.</returns>
/// <exception cref="NotSupportedException">Container version is not supported.</exception>
public static async Task <PwsFile> CreateAsync(Stream stream, SecureString passkey, PwsFileVersion version)
{
PwsFile file;
switch (version)
{
case PwsFileVersion.Version3:
file = new PwsFileV3(stream, passkey, FileMode.Create);
break;
default:
throw new NotSupportedException("Requested container version is not supported.");
}
await file.OpenAsync();
return(file);
}