public bool Load(AxCryptReader axCryptReader)
{
axCryptReader.Read();
if (axCryptReader.CurrentItemType != AxCryptItemType.MagicGuid)
{
throw new FileFormatException("No magic Guid was found.", ErrorStatus.MagicGuidMissing);
}
List <HeaderBlock> headerBlocks = new List <HeaderBlock>();
while (axCryptReader.Read())
{
switch (axCryptReader.CurrentItemType)
{
case AxCryptItemType.HeaderBlock:
headerBlocks.Add(axCryptReader.CurrentHeaderBlock);
break;
case AxCryptItemType.Data:
headerBlocks.Add(axCryptReader.CurrentHeaderBlock);
_headerBlocks = headerBlocks;
EnsureFileFormatVersion();
if (GetMasterKey() != null)
{
SetMasterKeyForEncryptedHeaderBlocks(headerBlocks);
return(true);
}
return(false);
default:
throw new InternalErrorException("The reader returned an AxCryptItemType it should not be possible for it to return.");
}
}
throw new FileFormatException("Premature end of stream.", ErrorStatus.EndOfStream);
}
private void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
if (disposing)
{
if (_dataCrypto != null)
{
_dataCrypto.Dispose();
_dataCrypto = null;
}
if (_reader != null)
{
_reader.Dispose();
_reader = null;
}
}
_disposed = true;
}
/// <summary>
/// Loads an AxCrypt file from the specified reader. After this, the reader is positioned to
/// read encrypted data.
/// </summary>
/// <param name="stream">The stream to read from. Will be disposed when this instance is disposed.</param>
/// <returns>True if the key was valid, false if it was wrong.</returns>
public bool Load(Stream stream, AesKey key)
{
_reader = AxCryptReader.Create(stream);
DocumentHeaders documentHeaders = new DocumentHeaders(key);
PassphraseIsValid = documentHeaders.Load(_reader);
if (PassphraseIsValid)
{
DocumentHeaders = documentHeaders;
}
return PassphraseIsValid;
}
