internal NodeInfo(string id, DownloadUrlResponse downloadResponse, byte[] key)
{
this.Id = id;
this.Attributes = Crypto.DecryptAttributes(downloadResponse.SerializedAttributes.FromBase64(), key);
this.Size = downloadResponse.Size;
this.Type = NodeType.File;
}
public NodePublic(DownloadUrlResponse downloadResponse, byte[] fileKey)
{
Attributes attributes = Crypto.DecryptAttributes(downloadResponse.SerializedAttributes.FromBase64(), fileKey);
this.Name = attributes.Name;
this.Size = downloadResponse.Size;
this.Type = NodeType.File;
}
public void OnDeserialized(StreamingContext ctx)
{
// Add key from incoming sharing.
if (this.SharingKey != null && this.sharedKeys.Any(x => x.Id == this.Id) == false)
{
this.sharedKeys.Add(new SharedKey(this.Id, this.SharingKey));
}
this.CreationDate = this.SerializedCreationDate.ToDateTime();
if (this.Type == NodeType.File || this.Type == NodeType.Directory)
{
// There are cases where the SerializedKey property contains multiple keys separated with /
// This can occur when a folder is shared and the parent is shared too.
// Both keys are working so we use the first one
string serializedKey = this.SerializedKey.Split('/')[0];
int splitPosition = serializedKey.IndexOf(":", StringComparison.Ordinal);
byte[] encryptedKey = serializedKey.Substring(splitPosition + 1).FromBase64();
// If node is shared, we need to retrieve shared masterkey
if (this.sharedKeys != null)
{
string handle = serializedKey.Substring(0, splitPosition);
SharedKey sharedKey = this.sharedKeys.FirstOrDefault(x => x.Id == handle);
if (sharedKey != null)
{
this.masterKey = Crypto.DecryptKey(sharedKey.Key.FromBase64(), this.masterKey);
if (this.Type == NodeType.Directory)
{
this.SharedKey = this.masterKey;
}
else
{
this.SharedKey = Crypto.DecryptKey(encryptedKey, this.masterKey);
}
}
}
this.FullKey = Crypto.DecryptKey(encryptedKey, this.masterKey);
if (this.Type == NodeType.File)
{
byte[] iv, metaMac, fileKey;
Crypto.GetPartsFromDecryptedKey(this.FullKey, out iv, out metaMac, out fileKey);
this.Iv = iv;
this.MetaMac = metaMac;
this.Key = fileKey;
}
else
{
this.Key = this.FullKey;
}
this.Attributes = Crypto.DecryptAttributes(this.SerializedAttributes.FromBase64(), this.Key);
}
}
public void OnDeserialized(StreamingContext ctx)
{
if (this.SharingKey != null && !this.sharedKeys.Any((SharedKey x) => x.Id == base.Id))
{
this.sharedKeys.Add(new SharedKey(base.Id, this.SharingKey));
}
this.CreationDate = this.SerializedCreationDate.ToDateTime();
if (base.Type == NodeType.File || base.Type == NodeType.Directory)
{
if (string.IsNullOrEmpty(this.SerializedKey))
{
this.EmptyKey = true;
return;
}
string text = this.SerializedKey.Split(new char[]
{
'/'
})[0];
int num = text.IndexOf(":", StringComparison.Ordinal);
byte[] data = text.Substring(num + 1).FromBase64();
if (this.sharedKeys != null)
{
string handle = text.Substring(0, num);
SharedKey sharedKey = this.sharedKeys.FirstOrDefault((SharedKey x) => x.Id == handle);
if (sharedKey != null)
{
this.masterKey = Crypto.DecryptKey(sharedKey.Key.FromBase64(), this.masterKey);
if (base.Type == NodeType.Directory)
{
this.SharedKey = this.masterKey;
}
else
{
this.SharedKey = Crypto.DecryptKey(data, this.masterKey);
}
}
}
this.FullKey = Crypto.DecryptKey(data, this.masterKey);
if (base.Type == NodeType.File)
{
byte[] iv;
byte[] metaMac;
byte[] key;
Crypto.GetPartsFromDecryptedKey(this.FullKey, out iv, out metaMac, out key);
this.Iv = iv;
this.MetaMac = metaMac;
this.Key = key;
}
else
{
this.Key = this.FullKey;
}
base.Attributes = Crypto.DecryptAttributes(this.SerializedAttributes.FromBase64(), this.Key);
}
}
public void OnDeserialized(StreamingContext ctx)
{
byte[] masterKey = (byte[])((object[])ctx.Context)[0];
GetNodesResponse nodesResponse = (GetNodesResponse)((object[])ctx.Context)[1];
this.LastModificationDate = OriginalDateTime.AddSeconds(this.SerializedLastModificationDate).ToLocalTime();
if (this.Type == NodeType.File || this.Type == NodeType.Directory)
{
int splitPosition = this.SerializedKey.IndexOf(":", StringComparison.InvariantCulture);
byte[] encryptedKey = this.SerializedKey.Substring(splitPosition + 1).FromBase64();
this.DecryptedKey = Crypto.DecryptKey(encryptedKey, masterKey);
this.Key = this.DecryptedKey;
// If node is shared, we need to retrieve shared masterkey
if (nodesResponse.SharedKeys != null)
{
string owner = this.SerializedKey.Substring(0, splitPosition);
GetNodesResponse.SharedKey sharedKey = nodesResponse.SharedKeys.FirstOrDefault(x => x.Id == owner);
if (sharedKey != null)
{
masterKey = Crypto.DecryptKey(sharedKey.Key.FromBase64(), masterKey);
if (this.Type == NodeType.Directory)
{
this.DecryptedKey = masterKey;
}
this.Key = Crypto.DecryptKey(encryptedKey, masterKey);
}
}
if (this.Type == NodeType.File)
{
// Extract Iv and MetaMac
byte[] iv = new byte[8];
byte[] metaMac = new byte[8];
Array.Copy(this.DecryptedKey, 16, iv, 0, 8);
Array.Copy(this.DecryptedKey, 24, metaMac, 0, 8);
this.Iv = iv;
this.MetaMac = metaMac;
// For files, key is 256 bits long. Compute the key to retrieve 128 AES key
this.Key = new byte[16];
for (int idx = 0; idx < 16; idx++)
{
this.Key[idx] = (byte)(this.DecryptedKey[idx] ^ this.DecryptedKey[idx + 16]);
}
}
Attributes attributes = Crypto.DecryptAttributes(this.SerializedAttributes.FromBase64(), this.Key);
this.Name = attributes.Name;
}
}
internal Node(string id, DownloadUrlResponse downloadResponse, byte[] key, byte[] iv, byte[] metaMac)
{
Id = id;
Attributes = Crypto.DecryptAttributes(downloadResponse.SerializedAttributes.FromBase64(), key);
Size = downloadResponse.Size;
Type = NodeType.File;
FileAttributes = DeserializeFileAttributes(downloadResponse.SerializedFileAttributes);
Key = key;
Iv = iv;
MetaMac = metaMac;
}
public void OnDeserialized(StreamingContext ctx)
{
// Add key from incoming sharing.
if (this.SharingKey != null && this.sharedKeys.Any(x => x.Id == this.Id) == false)
{
this.sharedKeys.Add(new SharedKey(this.Id, this.SharingKey));
}
this.CreationDate = this.SerializedCreationDate.ToDateTime();
if (this.Type == NodeType.File || this.Type == NodeType.Directory)
{
// Check if file is not yet decrypted
if (string.IsNullOrEmpty(this.SerializedKey))
{
this.EmptyKey = true;
return;
}
// There are cases where the SerializedKey property contains multiple keys separated with /
// This can occur when a folder is shared and the parent is shared too.
// Both keys are working so we use the first one
string serializedKey = this.SerializedKey.Split('/')[0];
int splitPosition = serializedKey.IndexOf(":", StringComparison.Ordinal);
byte[] encryptedKey = serializedKey.Substring(splitPosition + 1).FromBase64();
// If node is shared, we need to retrieve shared masterkey
if (this.sharedKeys != null)
{
string handle = serializedKey.Substring(0, splitPosition);
SharedKey sharedKey = this.sharedKeys.FirstOrDefault(x => x.Id == handle);
if (sharedKey != null)
{
this.masterKey = Crypto.DecryptKey(sharedKey.Key.FromBase64(), this.masterKey);
if (this.Type == NodeType.Directory)
{
this.SharedKey = this.masterKey;
}
else
{
this.SharedKey = Crypto.DecryptKey(encryptedKey, this.masterKey);
}
}
}
this.FullKey = Crypto.DecryptKey(encryptedKey, this.masterKey);
if (this.Type == NodeType.File)
{
byte[] iv, metaMac, fileKey;
Crypto.GetPartsFromDecryptedKey(this.FullKey, out iv, out metaMac, out fileKey);
this.Iv = iv;
this.MetaMac = metaMac;
this.Key = fileKey;
}
else
{
this.Key = this.FullKey;
}
this.Attributes = Crypto.DecryptAttributes(this.SerializedAttributes.FromBase64(), this.Key);
if (this.SerializedFileAttributes != null)
{
var attributes = this.SerializedFileAttributes.Split('/');
this.FileAttributes = attributes
.Select(_ => FileAttributeRegex.Match(_))
.Where(_ => _.Success)
.Select(_ => new FileAttribute(
int.Parse(_.Groups["id"].Value),
(FileAttributeType)Enum.Parse(typeof(FileAttributeType), _.Groups["type"].Value),
_.Groups["handle"].Value))
.ToArray();
}
}
}
public void OnDeserialized(StreamingContext ctx)
{
object[] context = (object[])ctx.Context;
GetNodesResponse nodesResponse = (GetNodesResponse)context[0];
if (context.Length == 1)
{
// Add key from incoming sharing.
if (this.SharingKey != null)
{
nodesResponse.SharedKeys.Add(new GetNodesResponse.SharedKey(this.Id, this.SharingKey));
}
return;
}
else
{
byte[] masterKey = (byte[])context[1];
this.LastModificationDate = OriginalDateTime.AddSeconds(this.SerializedLastModificationDate).ToLocalTime();
if (this.Type == NodeType.File || this.Type == NodeType.Directory)
{
// There are cases where the SerializedKey property contains multiple keys separated with /
// This can occur when a folder is shared and the parent is shared too.
// Both keys are working so we use the first one
string serializedKey = this.SerializedKey.Split('/')[0];
int splitPosition = serializedKey.IndexOf(":", StringComparison.InvariantCulture);
byte[] encryptedKey = serializedKey.Substring(splitPosition + 1).FromBase64();
// If node is shared, we need to retrieve shared masterkey
if (nodesResponse.SharedKeys != null)
{
string handle = serializedKey.Substring(0, splitPosition);
GetNodesResponse.SharedKey sharedKey = nodesResponse.SharedKeys.FirstOrDefault(x => x.Id == handle);
if (sharedKey != null)
{
masterKey = Crypto.DecryptKey(sharedKey.Key.FromBase64(), masterKey);
if (this.Type == NodeType.Directory)
{
this.SharedKey = masterKey;
}
else
{
this.SharedKey = Crypto.DecryptKey(encryptedKey, masterKey);
}
}
}
this.Key = Crypto.DecryptKey(encryptedKey, masterKey);
if (this.Type == NodeType.File)
{
byte[] iv, metaMac, fileKey;
Crypto.GetPartsFromDecryptedKey(this.Key, out iv, out metaMac, out fileKey);
this.Iv = iv;
this.MetaMac = metaMac;
this.Key = fileKey;
}
Attributes attributes = Crypto.DecryptAttributes(this.SerializedAttributes.FromBase64(), this.Key);
this.Name = attributes.Name;
}
}
}
public void OnDeserialized(StreamingContext ctx)
{
// Add key from incoming sharing.
if (SharingKey != null && _sharedKeys.Any(x => x.Id == Id) == false)
{
_sharedKeys.Add(new SharedKey(Id, SharingKey));
}
CreationDate = SerializedCreationDate.ToDateTime();
if (Type == NodeType.File || Type == NodeType.Directory)
{
// Check if file is not yet decrypted
if (string.IsNullOrEmpty(SerializedKey))
{
EmptyKey = true;
return;
}
// There are cases where the SerializedKey property contains multiple keys separated with /
// This can occur when a folder is shared and the parent is shared too.
// Both keys are working so we use the first one
var serializedKey = SerializedKey.Split('/')[0];
var splitPosition = serializedKey.IndexOf(":", StringComparison.Ordinal);
var encryptedKey = serializedKey.Substring(splitPosition + 1).FromBase64();
// If node is shared, we need to retrieve shared masterkey
if (_sharedKeys != null)
{
var handle = serializedKey.Substring(0, splitPosition);
var sharedKey = _sharedKeys.FirstOrDefault(x => x.Id == handle);
if (sharedKey != null)
{
_masterKey = Crypto.DecryptKey(sharedKey.Key.FromBase64(), _masterKey);
if (Type == NodeType.Directory)
{
SharedKey = _masterKey;
}
else
{
SharedKey = Crypto.DecryptKey(encryptedKey, _masterKey);
}
}
}
if (encryptedKey.Length != 16 && encryptedKey.Length != 32)
{
// Invalid key size
return;
}
FullKey = Crypto.DecryptKey(encryptedKey, _masterKey);
if (Type == NodeType.File)
{
Crypto.GetPartsFromDecryptedKey(FullKey, out var iv, out var metaMac, out var fileKey);
Iv = iv;
MetaMac = metaMac;
Key = fileKey;
}
else
{
Key = FullKey;
}
Attributes = Crypto.DecryptAttributes(SerializedAttributes.FromBase64(), Key);
FileAttributes = DeserializeFileAttributes(SerializedFileAttributes);
}
}
