Encrypting A Pdf Document And Adding A Digital Signature; Password-Based Encryption - Olivetti d-Color MF551 Function Manual

7.3

Encrypting a PDF document and adding a digital signature

7.3 Encrypting a PDF document and adding a digital signature
Selecting "PDF" or "Compact PDF" as a file type when distributing a scanned document or document saved
in a User Box allows you to enhance security for the PDF document by encrypting it using a password or the
digital ID of a user (public key).
When a device certificate is registered in the MFP, a PDF document can be distributed with a digital signature
added. Adding a digital signature certifies the author (MFP) of a sent document and guarantees that the
document has not been modified.
Reference
- When sending a document in a User Box in the PDF format to other device using Web Connection, you
can configure settings for encrypting the PDF document and adding a digital signature.
- To add a digital signature, it is necessary to encrypt the PDF document using a password or digital ID.
7.3.1

Password-based encryption

To encrypt a document using a password, configure the following settings.
Item
Encryption Target
Encryption Type
Signature
Encryption Level
Password
Document Permis-
sions
d-Color MF651/MF551
Description
Select an encryption target.
Selecting [Other than Metadata] excludes the item specified in "PDF Docu-
ment Properties" from the encryption target.
Selecting [Other than Metadata] does not allow you to select [Low Level] for
Encryption Level.
Select [Password].
When a device certificate has been registered in the MFP, specify whether to
add a digital signature.
For details on registering a device certificate in the MFP, refer to the "User's
Guide [Network Administrator]".
Select an encryption level.
• Low Level: RC4 encoding method (40-bit key length)
• High Level 1: RC4 encoding method (128-bit key length)
• High Level 2: AES encoding method (128-bit key length)
Enter the password required to open a PDF document.
Enter the password twice for confirmation.
Enter the password required to change the document permissions. Enter the
password twice for confirmation. You cannot use the same password as that
specified in "Password".
After you have configured document permissions, press [Detail Settings] to
configure the detailed permission settings, Specifiable values vary depending
on the encryption level.
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