DocumentBase.SetPasswordEncryptionOptions Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Sets the options Microsoft Office Word uses for encrypting documents with passwords.
public void SetPasswordEncryptionOptions (string passwordEncryptionProvider, string passwordEncryptionAlgorithm, int passwordEncryptionKeyLength, ref object passwordEncryptionFileProperties);member this.SetPasswordEncryptionOptions : string * string * int * obj -> unitPublic Sub SetPasswordEncryptionOptions (passwordEncryptionProvider As String, passwordEncryptionAlgorithm As String, passwordEncryptionKeyLength As Integer, Optional ByRef passwordEncryptionFileProperties As Object)Parameters
- passwordEncryptionProvider
- String
The name of the encryption provider.
- passwordEncryptionAlgorithm
- String
The name of the encryption algorithm. Word supports stream-encrypted algorithms.
- passwordEncryptionKeyLength
- Int32
The encryption key length. Must be a multiple of 8, starting at 40.
- passwordEncryptionFileProperties
- Object
true for Word to encrypt file properties. Default is true.
Examples
The following code example uses the SetPasswordEncryptionOptions method to use the RC4 encryption algorithm. The code specifies a key length of 56, enables file property encryption, and sets the name of the encryption provider to the string "Microsoft RSA SChannel Cryptographic Provider". To use this example, run it from the ThisDocument class in a document-level project.
private void DocumentSetPasswordEncryptionOptions()
{
object PasswordEncryptionFileProperties = true;
this.SetPasswordEncryptionOptions(
"Microsoft RSA SChannel Cryptographic Provider",
"RC4", 56, ref PasswordEncryptionFileProperties);
}
Private Sub DocumentSetPasswordEncryptionOptions()
Me.SetPasswordEncryptionOptions( _
"Microsoft RSA SChannel Cryptographic Provider", _
"RC4", 56, True)
End Sub
Remarks
For enhanced security, do not use Weak Encryption (XOR) (also called "OfficeXor") or "Office97/2000 Compatible" (also called "OfficeStandard") algorithms.