public SnapshotStore(
IRepository <Uri> uriRepository,
IRepository <int> intRepository,
FastCdc fastCdc,
string hashAlgorithmName,
IPrompt prompt,
IProbe probe,
int parallelizeChunkThreshold)
{
_uriRepository = uriRepository;
_intRepository = intRepository;
_fastCdc = fastCdc;
_hashAlgorithmName = hashAlgorithmName;
_probe = probe;
_parallelizeChunkThreshold = parallelizeChunkThreshold;
if (parallelizeChunkThreshold <= 0)
{
throw new ArgumentException(
"Value must be larger than zero",
nameof(parallelizeChunkThreshold));
}
_currentSnapshotId = FetchCurrentSnapshotId();
if (_currentSnapshotId == null)
{
_salt = AesGcmCrypto.GenerateSalt();
_iterations = AesGcmCrypto.Iterations;
}
else
{
var snapshotReference = GetSnapshotReference(
_currentSnapshotId.Value);
_salt = snapshotReference.Salt;
_iterations = snapshotReference.Iterations;
}
_key = new Lazy <byte[]>(() =>
{
var password = _currentSnapshotId == null
? prompt.NewPassword()
: prompt.ExistingPassword();
return(AesGcmCrypto.PasswordToKey(password, _salt, _iterations));
});
}
public string NewPassword()
{
return(GetEnvironmentPassword()
?? GetProcessPassword()
?? _prompt.NewPassword());
}
