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WalletCrypt is a very simple application written in Visual Basic 2008 and requires .NET Framework 2.0. It is designed to address the recent trojan attacks on Windows Bitcoin users' wallet.dat files. WalletCrypt is to be used when your Bitcoin client is not in use. It will encrypt the wallet.dat file with 512-bit SHA1 encryption and move the file to a location of your choosing. You can currently encrypt/decrypt the file with a password. Other encryption methods and private certificate support are soon to follow in later revisions.

The precompiled binary is for use with Windows XP, although it has been tested on 7 and Vista. The only issue so far with 7 and Vista is that the Browse function does not automatically point to the %appdata%\Bitcoin folder. This will be corrected in the future, and if you have a fix for this, I will gladly upload it to the repo.