class HexaPDF::Encryption::EncryptionDictionary

Parent	HexaPDF::Dictionary

Base class for all encryption dictionaries.

Contains entries common to all encryption dictionaries. If a specific security handler needs further fields it should derive a new subclass and add the new fields there.

See: PDF1.7 s7.6.1

Field Definitions

Name	Type/Allowed Values	Required	Default Value
Filter	Symbol	true	nil
SubFilter	Symbol	false	nil
V	Integer	true	nil
Lenth	Integer	false	40
CF	HexaPDF::Dictionary or Hash	false	nil
StmF	Symbol	false	:Identity
StrF	Symbol	false	:Identity
EFF	Symbol	false	nil

Public Instance Methods

must_be_indirect?()¶

Returns true because some PDF readers stumble when encountering a non-indirect encryption dictionary.