Password that is required to open the document
Namespace | http://www.w3.org/2001/XMLSchema |
string
Prevents users from opening the document unless they type the password you specify. Passwords are case sensitive. Acrobat uses the RC4 method of security from RSA Security Inc. to password-protect PDF documents. If you are restricting printing and editing, it is recommended that you add a document open password to enhance security.