Pdf.Toolbox.Document.Encryption

Basic support for encrypted PDF documents

Documentation

type Decryptor = Ref -> IS -> IO IS

Decrypt input stream

defaultUserPassword :: ByteString

The default user password

mkStandardDecryptor

Arguments

:: Monad m

=> Dict

document trailer

-> Dict

encryption dictionary

-> ByteString

user password (32 bytes exactly, see 7.6.3.3 Encryption Key Algorithm)

-> PdfE m (Maybe Decryptor)

Standard decryptor. RC4

decryptObject :: (IS -> IO IS) -> Object a -> IO (Object a)

Decrypt object with the decryptor