Hpdf::EncryptMode
Inherits Enum / Comparable / Value / Object
set via Doc#set_password_and_permission.
Constants
EncryptR2 = 2
Use "Revision 2" algorithm. The length of key is automatically set to 5(40bit).
EncryptR3 = 3
Use "Revision 3" algorithm. Between 5(40bit) and 16(128bit) can be specified for length of the key.