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Library
Module
Module type
Parameter
Class
Class type
Library
Module
Module type
Parameter
Class
Class type
Decrypting PDF files
Note that encryption depends on fixed object and generation numbers: don't change these (for example by calling Pdf.remove_unreferenced
on the PDF) before writing.
Encryption support is part of the Pdfwrite
module, since files are encrypted when they're written.
val crypt_debug : bool ref
If this is set, various debug is produced on standard output. On startup, is set to false
val decrypt_pdf :
?keyfromowner:string ->
string ->
Pdf.t ->
Pdf.t option * permission list
Decrypt a PDF document, given the user password, returning the permissions under which the document was encrypted.
Decrypt a PDF document, given the owner password.
val is_encrypted : Pdf.t -> bool
Is a PDF encrypted?
recrypt_pdf decrypted_and_modified
re-encrypts a PDF document which was decrypted using the user password and owner password from the original encrypted file and the same permissions and encryption parameters.
val encrypt_pdf_40bit : string -> string -> permission list -> Pdf.t -> Pdf.t
Encrypt a PDF documnent, using 40 bit encryption, with given user and owner passwords.
val encrypt_pdf_128bit : string -> string -> permission list -> Pdf.t -> Pdf.t
Ditto for 128 bit encryption
val encrypt_pdf_AES :
bool ->
string ->
string ->
permission list ->
Pdf.t ->
Pdf.t
Encrypt a file using the AESV2 Crypt filter
val encrypt_pdf_AES256 :
bool ->
string ->
string ->
permission list ->
Pdf.t ->
Pdf.t
Encrypt a file using the AESV3 Crypt filter
val encrypt_pdf_AES256ISO :
bool ->
string ->
string ->
permission list ->
Pdf.t ->
Pdf.t
Encrypt a file using the AESV4 (ISO) Crypt filter