Apple Mac OS X Panther Guia de Configuração descarregar pdf (Página 103)

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Appendix A -

Encrypting Files and Folders

Figure 38: Disk Utility Save Panel

4. Choose the size of the disk image from the Size pop-up menu. Disk images

cannot be directly expanded, so make the size as large as may be needed.

5. Choose an encryption method. The recommended method is AES-128.

6. Choose a format, and then click Create. Although there is some overhead,

the sparse format allows the image to maintain a size proportional to its

contents (up to its maximum size), which can save disk space.

7. A dialog box (Figure 39) will appear asking for a password to use in

encrypting the image. It is important to use a good password here, and to

ensure that the password is not forgotten. If the data is very important, it may

be a good idea to write down the password, seal it in an envelope, and store it

in a secure location. If the password is lost or forgotten, the data cannot be

recovered.

Figure 39: Password Entry for Encrypted Image

This dialog box offers a checkbox which, when checked, causes the password

to be saved in the user’s keychain. This means that anytime the user’s

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Apple Mac OS X Panther Guia de Configuração Página 103