Tag Archives | Encryption

EFS Encryption and CopyFile(Ex): Why DIY is Better

Generally I am not the type to recommend re-implementing functionality present in some API. But with the Windows function CopyFile(Ex) there may be no alternative, because of the less than sub-optimal way Windows copies EFS-encrypted files: If the source encryption key can be used on the target (i.e. if the target computer can access the […]

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Cleaning up the Mess Left Behind by Multiple EFS Certificates

In case you have (un?)wittingly been juggling around with multiple EFS certificates like me, you may feel a strong urge to clean up the mess. Which mess? It can happen quite easily that different files are encrypted with different keys. In addition to that, directories that are marked for encryption have EFS certificates associated with […]

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