Spire.Pdf 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.Pdf.Security
Assembly: Spire.Pdf (in Spire.Pdf.dll) Version: 11.3.7.0 (11.3.7.1046)

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.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

Reference

PdfSecurity Class

Encrypt Overload

Spire.Pdf.Security Namespace

PdfSecurity AddLanguageSpecificTextSet("LSTF33FE7D1_0?cpp=::|nu=."); Encrypt Method (String, String, PdfPermissionsFlags, PdfEncryptionKeySize)

Parameters

Reference

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