public bool ChangeEncryptionKey(string oldKey, string newKey)
{
if (this.Encrypted)
{
if (!this.VerifyPasskey(oldKey))
{
return(false);
}
}
bool toEncrypt = newKey != null;
string maDir = Manifest.GetExecutableDir() + "/maFiles/";
for (int i = 0; i < this.Entries.Count; i++)
{
ManifestEntry entry = this.Entries[i];
string filename = maDir + entry.Filename;
if (!File.Exists(filename))
{
continue;
}
string fileContents = File.ReadAllText(filename);
if (this.Encrypted)
{
fileContents = FileEncryptor.DecryptData(oldKey, entry.Salt, entry.IV, fileContents);
}
string newSalt = null;
string newIV = null;
string toWriteFileContents = fileContents;
if (toEncrypt)
{
newSalt = FileEncryptor.GetRandomSalt();
newIV = FileEncryptor.GetInitializationVector();
toWriteFileContents = FileEncryptor.EncryptData(newKey, newSalt, newIV, fileContents);
}
File.WriteAllText(filename, toWriteFileContents);
entry.IV = newIV;
entry.Salt = newSalt;
}
this.Encrypted = toEncrypt;
this.Save();
return(true);
}
public bool SaveAccount(SteamGuardAccount account, bool encrypt, string passKey = null)
{
if (encrypt && String.IsNullOrEmpty(passKey))
{
return(false);
}
if (!encrypt && this.Encrypted)
{
return(false);
}
string salt = null;
string iV = null;
string jsonAccount = JsonConvert.SerializeObject(account);
if (encrypt)
{
salt = FileEncryptor.GetRandomSalt();
iV = FileEncryptor.GetInitializationVector();
string encrypted = FileEncryptor.EncryptData(passKey, salt, iV, jsonAccount);
if (encrypted == null)
{
return(false);
}
jsonAccount = encrypted;
}
string maDir = Manifest.GetExecutableDir() + "/maFiles/";
string filename = account.Session.SteamID.ToString() + ".maFile";
ManifestEntry newEntry = new ManifestEntry()
{
SteamID = account.Session.SteamID,
IV = iV,
Salt = salt,
Filename = filename
};
bool foundExistingEntry = false;
for (int i = 0; i < this.Entries.Count; i++)
{
if (this.Entries[i].SteamID == account.Session.SteamID)
{
this.Entries[i] = newEntry;
foundExistingEntry = true;
break;
}
}
if (!foundExistingEntry)
{
this.Entries.Add(newEntry);
}
bool wasEncrypted = this.Encrypted;
this.Encrypted = encrypt || this.Encrypted;
if (!this.Save())
{
this.Encrypted = wasEncrypted;
return(false);
}
try
{
File.WriteAllText(maDir + filename, jsonAccount);
return(true);
}
catch (Exception)
{
return(false);
}
}