Looking for a safe, portable password-storage method

Posted by Maciek on Stack Overflow See other posts from Stack Overflow or by Maciek
Published on 2010-04-08T13:05:02Z Indexed on 2010/04/08 13:13 UTC
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c++

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security

Hello,

I'm working on C++ project that is supposed to run on both Win32 and Linux, the software is to be deployed to small computers, usually working in remote locations.

Recently, our client has requested that we introduce access control via password protection.

We are to meet the following criteria :

Support remote login
Support remote password change
Support remote password retrieval
Support data retrieval on accidental/purposeful deletion
Support secure storage

I'm capable of meeting the "remote" requirements using an existing library, however what I do need to consider is a method of storing this data, preferably in a way that will work on both platforms and will not let the user see it/read it, encryption is not the issue here - it's the storage method itself.

Can anyone recommend a sage storage method that could help me meet those criteria?

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