The NetShare users of the folder must belong to a local network or domain. The files placed in the NetShare protected folder are encrypted to the public keys of the NetShare users of the folder. When one of the authorized users accesses a file in the protected folder, it is sent to the user's machine in the encrypted state and then decrypted by the user's private key when it is at the user's computer; when saved back to the protected folder, it is also transmitted in the encrypted state.