This section describes each item on the [Security] menu of the SkyPDF V4 MT Driver Settings screen.
In PDF security settings, you can restrict permissions such as viewing, printing, and editing based on password input and the presence of a certificate.
If you are setting up security using a password, please set Password in security types. If you are setting up security using a digital certificate, please set PKI in security types.
When you select Password in Security Types, you can set a password to encrypt the PDF and restrict the permissions of the viewer.
PDF Open Password | The password (up to 32 characters) required to open the PDF.
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Password which change PDF permission | A password (up to 32 characters) required to change permission settings.
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When you select [PKI] in [Security Types], you can encrypt the PDF using a digital certificate and restrict the permissions of the viewer. (Compatible PDF version: 1.5-2.0)
Only the certificates installed in the ‘Personal’ store or ‘Other People’ store of the certificate store can be used for security. Certificates installed in other stores cannot be used.
Certificates installed in the ‘Personal’ store are displayed as ‘O’ in the [Owner] field.
Edit recipients later | Check here to display a security setting dialog to set the certificate at the time of printing (when creating a PDF).
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Security Certificate | Select the certificate to use from the [Installed Certificate].
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Installed Certificate | A list of certificates installed in the system that can be used for PKI.
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When you press [Add],
When you press [Delete],
When you press [Details], the details of the selected certificate are displayed.
When you press [Verify], the [Security Certificate] is verified for validity.
If the certificate is valid, a green check mark is displayed in [Status], and if it is invalid, a red cross mark is displayed.
Print Permissions | This is where you set permissions related to printing the PDF. | ||||||||||||
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When this is set, it creates a PDF that cannot be printed. | ||||||||||||
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When this is set, it creates a PDF that can only be printed at low resolution. | ||||||||||||
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When this is set, printing is allowed. | ||||||||||||
Edit Permissions | This is where you set permissions related to editing the PDF. | ||||||||||||
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When this is set, it restricts all operations to edit the contents of the PDF. | ||||||||||||
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When this is set, it allows all operations to edit the contents of the PDF. | ||||||||||||
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Enable copying of text, images, and other content | This checkbox is for setting permissions related to copying and extracting content from the PDF. | ||||||||||||
Enable text access for screen render device for the visually impaired | This checkbox is for setting permissions related to the behavior of applications with text-to-speech functionality when opening a PDF.
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Encryption Level | The higher the encryption level, the more effective it is in terms of security. The higher the encryption level, the newer the PDF version should be. |
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(Compatible PDF version: 1.3-1.7) This encryption level can be set even for PDF versions 1.3 and 1.4. It is not recommended for setting security for PDF versions 1.6 and later. |
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(Compatible PDF version: 1.6, 1.7) This is a higher level of encryption compared to 128bit RC4. |
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(Compatible PDF version: 1.7, 2.0) This is a higher level of encryption compared to 128bit AES v2. |
Encrypt Contents | This is the range of PDF components to encrypt.
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Encrypt all elements, including metadata. |
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By not encrypting metadata, it is possible to read metadata without a password or certificate. This is useful when searching for files from outside the PDF viewer. |