public virtual void SaveSecure(string tag, string data, string userId = null)
{
if (string.IsNullOrEmpty(data))
{
return;
}
bool saved = false;
try {
string saveFileName = GetFileName(tag, userId);
SwrveLog.Log("Saving: " + saveFileName, "storage");
CrossPlatformFile.SaveText(saveFileName, data);
string signatureFileName = saveFileName + SIGNATURE_SUFFIX;
string signature = SwrveHelper.CreateHMACMD5(data, uniqueKey);
CrossPlatformFile.SaveText(signatureFileName, signature);
saved = true;
} catch (Exception e) {
SwrveLog.LogError(e.ToString(), "storage");
}
if (!saved)
{
SwrveLog.LogWarning(tag + " not saved!", "storage");
}
}
public virtual void SaveSecure(string tag, string data, string userId = null)
{
if (!string.IsNullOrEmpty(data))
{
bool flag = false;
try
{
string fileName = GetFileName(tag, userId);
SwrveLog.Log("Saving: " + fileName, "storage");
CrossPlatformFile.SaveText(fileName, data);
string path = fileName + "_SGT";
string data2 = SwrveHelper.CreateHMACMD5(data, uniqueKey);
CrossPlatformFile.SaveText(path, data2);
flag = true;
}
catch (Exception ex)
{
SwrveLog.LogError(ex.ToString(), "storage");
}
if (!flag)
{
SwrveLog.LogWarning(tag + " not saved!", "storage");
}
}
}
public virtual string LoadSecure(string tag, string userId = null)
{
string text = null;
string fileName = GetFileName(tag, userId);
try
{
string text2 = fileName + "_SGT";
if (CrossPlatformFile.Exists(fileName))
{
text = CrossPlatformFile.LoadText(fileName);
if (!string.IsNullOrEmpty(text))
{
string text3 = null;
if (CrossPlatformFile.Exists(text2))
{
text3 = CrossPlatformFile.LoadText(text2);
}
else
{
SwrveLog.LogError("Could not read signature file: " + text2);
text = null;
}
if (!string.IsNullOrEmpty(text3))
{
string value = SwrveHelper.CreateHMACMD5(text, uniqueKey);
if (string.IsNullOrEmpty(value))
{
SwrveLog.LogError("Could not compute signature for data in file " + fileName);
text = null;
}
else if (!text3.Equals(value))
{
if (callback != null)
{
callback();
}
SwrveLog.LogError("Signature validation failed for " + fileName);
text = null;
}
}
}
else
{
SwrveLog.LogError("Could not read file " + fileName);
}
}
}
catch (Exception ex)
{
SwrveLog.LogError(ex.ToString(), "storage");
}
return(text);
}
public virtual string LoadSecure(string tag, string userId = null)
{
string result = null;
// Read from file
string loadFileName = GetFileName(tag, userId);
string signatureFileName = loadFileName + SIGNATURE_SUFFIX;
if (CrossPlatformFile.Exists(loadFileName))
{
result = CrossPlatformFile.LoadText(loadFileName);
if (!string.IsNullOrEmpty(result))
{
string signature = null;
if (CrossPlatformFile.Exists(signatureFileName))
{
signature = CrossPlatformFile.LoadText(signatureFileName);
}
else
{
SwrveLog.LogError("Could not read signature file: " + signatureFileName);
result = null;
}
if (!string.IsNullOrEmpty(signature))
{
string computedSignature = SwrveHelper.CreateHMACMD5(result, uniqueKey);
if (string.IsNullOrEmpty(computedSignature))
{
SwrveLog.LogError("Could not compute signature for data in file " + loadFileName);
result = null;
}
else
{
if (!signature.Equals(computedSignature))
{
// Notify of invalid signature
if (callback != null)
{
callback.Invoke();
}
SwrveLog.LogError("Signature validation failed for " + loadFileName);
result = null;
}
}
}
}
else
{
SwrveLog.LogError("Could not read file " + loadFileName);
}
}
else
{
// No cache available
}
return(result);
}