Struct EncryptionHandler 

pub struct EncryptionHandler { /* private fields */ }

PDF Encryption Handler

Implementations

impl EncryptionHandler

pub fn new( encrypt_dict: &PdfDictionary, file_id: Option<Vec<u8>>, ) -> ParseResult<Self>

Create encryption handler from encryption dictionary

pub fn detect_encryption(trailer: &PdfDictionary) -> bool

Check if PDF is encrypted by looking for Encrypt entry in trailer

pub fn unlock_with_user_password(&mut self, password: &str) -> ParseResult<bool>

Try to unlock PDF with user password

pub fn unlock_with_owner_password( &mut self, password: &str, ) -> ParseResult<bool>

Try to unlock PDF with owner password

Owner password authentication works by:

1. Deriving an RC4 key from the owner password
2. Decrypting the O entry to recover the user password
3. Using the recovered user password to compute the encryption key

pub fn try_empty_password(&mut self) -> ParseResult<bool>

Try to unlock with empty password (common case)

pub fn is_unlocked(&self) -> bool

Check if the PDF is currently unlocked

pub fn encryption_key(&self) -> Option<&EncryptionKey>

Get the current encryption key (if unlocked)

pub fn decrypt_string( &self, data: &[u8], obj_id: &ObjectId, ) -> ParseResult<Vec<u8>>

Decrypt a string object

pub fn decrypt_stream( &self, data: &[u8], obj_id: &ObjectId, ) -> ParseResult<Vec<u8>>

Decrypt a stream object

pub fn algorithm_info(&self) -> String

Get encryption algorithm information

pub fn permissions(&self) -> Permissions

Get permissions information

pub fn has_file_id(&self) -> bool

Check if file ID is available

pub fn revision(&self) -> i32

Get the encryption revision

pub fn encrypt_strings(&self) -> bool

Check if strings should be encrypted

pub fn encrypt_streams(&self) -> bool

Check if streams should be encrypted

pub fn encrypt_metadata(&self) -> bool

Check if metadata should be encrypted (R4 only)