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I was thinking of making a small tool. It is not important what the tool will do. The important thing, is that the tool will need to store some sensitive information on the user's HDD. EDIT: The information that will be stored is USER'S information - I'm not trying to protect my own content, that I distribute with the app.
I understand that I need to encrypt this information. But then, where do I safely store the encryption password? It's some sort of an infinite recursion...
So, is there a way, to encrypt information on windows, and have windows securely manage the passwords? When I say windows I mean Windows XP SP2 or later.
I should also note, that users on the same system must not have access to other users information (even when they are both running my application).
I'm looking for both - .NET 2.0 (C#) and native (C/C++) solutions to this problem.
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On the downside, localStorage is potentially vulnerable to cross-site scripting (XSS) attacks. If an attacker can inject malicious JavaScript into a webpage, they can steal an access token in localStorage. Also, unlike cookies, localStorage doesn't provide secure attributes that you can set to block attacks.
As local storage was never intended to be secure, there is no data protection and any JavaScript on the website can access it. Hackers can exploit the existing XSS vulnerability on the website like the following screenshot when the user browses to https://set-localstorage.herokuapp.com/xss-injected-page.html.
Encryption and decryption is a ways to save data securely to localStorage. However, in this scenario, you'll need a shared secure key to encrypt and decrypt data.
is there a way, to encrypt information on windows, and have windows securely manage the passwords?
CryptProtectData: http://msdn.microsoft.com/en-us/library/windows/desktop/aa380261(v=vs.85).aspx
Using from .NET: http://msdn.microsoft.com/en-us/library/aa302402.aspx
Historically, Protected Storage (available in XP, read-only in vista+): http://msdn.microsoft.com/en-us/library/bb432403%28VS.85%29.aspx
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