Syntax

expression.SetPasswordEncryptionOptions(PasswordEncryptionProvider, PasswordEncryptionAlgorithm, PasswordEncryptionKeyLength, PasswordEncryptionFileProperties)

expression A variable that represents a Workbook object.

Parameters

Name Required/Optional Data Type Description
PasswordEncryptionProvider Optional Variant A case sensitive string of the encryption provider.
PasswordEncryptionAlgorithm Optional Variant A case sensitive string of the algorithmic short name (i.e. "RC4").
PasswordEncryptionKeyLength Optional Variant The encryption key length which is a multiple of 8 (40 or greater).
PasswordEncryptionFileProperties Optional Variant True (default) to encrypt file properties.

Remarks

The PasswordEncryptionProvider, PasswordEncryptionAlgorithm, and PasswordEncryptionKeyLength arguments are not independent of each other. A selected encryption provider limits the set of algorithms and key length that can be chosen.

For the PasswordEncryptionKeyLength argument there is no inherent limit on the range of the key length. The range is determined by the Cryptographic Service Provider which also determines the cryptographic algorithm.

Example

This example sets the password encryption options for the active workbook.

Visual Basic for Applications 
Sub SetPasswordOptions() ActiveWorkbook.SetPasswordEncryptionOptions _ PasswordEncryptionProvider:="Microsoft RSA SChannel Cryptographic Provider", _ PasswordEncryptionAlgorithm:="RC4", _ PasswordEncryptionKeyLength:=56, _ PasswordEncryptionFileProperties:=True End Sub
set set password encryption options setpassword setpasswordencryption setpasswordencryptionoptions setpasswordencryptionoptions method

See also: