Spire.Presentation API

PdfSecurity Encrypt Method (String, String, PdfPermissionsFlags, PdfEncryptionKeySize)

To Encrypt the PDF document 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.Presentation.External.Pdf
Assembly: Spire.Presentation (in Spire.Presentation.dll) Version: 10.4.2.0 (10.4.2.6046)

Syntax

C++

Copy

public void Encrypt(
	string openPassword,
	string permissionPassword,
	PdfPermissionsFlags permissions,
	PdfEncryptionKeySize keySize
)

Public Sub Encrypt ( 
	openPassword As String,
	permissionPassword As String,
	permissions As PdfPermissionsFlags,
	keySize As PdfEncryptionKeySize
)

public:
void Encrypt(
	String^ openPassword, 
	String^ permissionPassword, 
	PdfPermissionsFlags permissions, 
	PdfEncryptionKeySize keySize
)

member Encrypt : 
openPassword : string * 
permissionPassword : string * 
permissions : PdfPermissionsFlags * 
keySize : PdfEncryptionKeySize -> unit

Parameters

openPassword: Type: System String
The open password
permissionPassword: Type: System String
The permission password
permissions: Type: Spire.Presentation.External.Pdf PdfPermissionsFlags
A set of flags specifying which operations are permitted when the document is opened with user access
keySize: Type: Spire.Presentation.External.Pdf PdfEncryptionKeySize
The bit length of the encryption key

Return Value

Type:

Reference

PdfSecurity Class

Encrypt Overload

Spire.Presentation.External.Pdf Namespace

PdfSecurity AddLanguageSpecificTextSet("LSTD33F83A6_0?cpp=::|nu=."); Encrypt Method (String, String, PdfPermissionsFlags, PdfEncryptionKeySize)

Parameters

Return Value

Reference

PdfSecurity Encrypt Method (String, String, PdfPermissionsFlags, PdfEncryptionKeySize)