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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.Doc
Assembly: Spire.Doc (in Spire.Doc.dll) Version: 13.2.3.0 (13.2.3.3046)
Syntax
public void Encrypt(
	string openPassword,
	string permissionPassword,
	PdfPermissionsFlags permissions,
	PdfEncryptionKeySize keySize
)

Parameters

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

Return Value

Type:
See Also