PdfSecurity Encrypt Method (String, String, PdfPermissionsFlags, PdfEncryptionKeySize, String) |
To Encrypt the PDF document with open password and permission password,and set the encryption key size and permissions.
Note:If set empty string value to open password or permission password, it indicates that the PDF document can be operated without providing corresponding password.
Namespace: Spire.Pdf.Security
Assembly: Spire.Pdf (in Spire.Pdf.dll) Version: 11.3.7.0 (11.3.7.1046)
Syntax
public void Encrypt( string openPassword, string permissionPassword, PdfPermissionsFlags permissions, PdfEncryptionKeySize keySize, string originalPermissionPassword )
Parameters
- openPassword
-
Type:
System
String
The open password - permissionPassword
-
Type:
System
String
The permission password - permissions
-
Type:
Spire.Pdf.Security
PdfPermissionsFlags
A set of flags specifying which operations are permitted when the document is opened with user access - keySize
-
Type:
Spire.Pdf.Security
PdfEncryptionKeySize
The bit length of the encryption key - originalPermissionPassword
-
Type:
System
String
The original permissionPassword of the document
See Also
