Encrypting a PDF File Using a Digital Certificate

Use a user's digital certificate (public key) to encrypt a PDF file when sending it. An encrypted PDF file can be decoded only with a user's secret key, preventing information from being leaked to a third party.

Tips

  • Before using this function, register a user's digital certificate for encryption in the E-mail address of this machine. To register a certificate, use Web Connection. For details, refer to [Registering E-mail Address] .

To encrypt a PDF file with a digital certificate, select [PDF] or [Compact PDF] as the file type, and tap [PDF Detail Setting] - [Encryption]. Then, configure the following settings.

Settings

Description

[ON]/[OFF]

Select [ON] to encrypt a PDF file.

[Encryption Type]

Select [Digital ID] to encrypt a PDF file with a digital certificate.

Select [Select Digital ID], then tap the icon to display a list of E-mail addresses. From the list, select an E-mail address that contains a digital certificate for encryption. Selecting [Use Recipient's Digital ID.] uses a digital certificate registered in the PDF file sending destination.

[Encryption Target]

Select a target file to be encrypted as required.

Selecting [Other than Metadata] excludes property information specified in [PDF Document Properties] from encryption processing.

For details on [PDF Document Properties], refer to [Configuring PDF File Properties] .