Set the encryption mode. As the side effect, ups the version of PDF to 1.4 when the mode is set to HaruEncryptMode.R3
One of the HaruEncryptMode
Specify the byte length of encryption key. Only valid for HaruEncryptMode.R3. Between 5 (40 bits) and 16 (128 bits) can be specified
See Implementation
Set the encryption mode. As the side effect, ups the version of PDF to 1.4 when the mode is set to HaruEncryptMode.R3