#include <PdfEncrypt.h>

Inheritance diagram for PoDoFo::PdfEncryptAES:

Public Member Functions
void	Encrypt (unsigned char *str, pdf_long len) const
	Encrypt a character string.

pdf_long	CalculateStreamOffset () const
	Calculate stream offset.

PdfInputStream *	CreateEncryptionInputStream (PdfInputStream *pInputStream)

PdfOutputStream *	CreateEncryptionOutputStream (PdfOutputStream *pOutputStream)

pdf_long	CalculateStreamLength (pdf_long length) const
	Calculate stream size.

void	CreateEncryptionDictionary (PdfDictionary &rDictionary) const

Public Member Functions inherited from PoDoFo::PdfEncrypt
virtual	~PdfEncrypt ()

const PdfEncrypt &	operator= (const PdfEncrypt &rhs)

void	GenerateEncryptionKey (const PdfString &documentId)

bool	Authenticate (const std::string &password, const PdfString &documentId)

EPdfEncryptAlgorithm	GetEncryptAlgorithm () const

bool	IsPrintAllowed () const

bool	IsEditAllowed () const

bool	IsCopyAllowed () const

bool	IsEditNotesAllowed () const

bool	IsFillAndSignAllowed () const

bool	IsAccessibilityAllowed () const

bool	IsDocAssemblyAllowed () const

bool	IsHighPrintAllowed () const

const unsigned char *	GetUValue () const
	Get the U object value (user)

const unsigned char *	GetOValue () const
	Get the O object value (owner)

int	GetPValue () const
	Get the P object value (protection)

int	GetRevision () const
	Get the revision number of the encryption method.

int	GetKeyLength () const
	Get the key length of the encryption key in bits.

void	Encrypt (std::string &str, pdf_long inputLen) const
	Encrypt a wxString.

void	SetCurrentReference (const PdfReference &rRef)

Additional Inherited Members
Public Types inherited from PoDoFo::PdfEncrypt
Static Public Member Functions inherited from PoDoFo::PdfEncrypt
static PdfEncrypt *	CreatePdfEncrypt (const std::string &userPassword, const std::string &ownerPassword, int protection=ePdfPermissions_Print\|ePdfPermissions_Edit\|ePdfPermissions_Copy\|ePdfPermissions_EditNotes\|ePdfPermissions_FillAndSign\|ePdfPermissions_Accessible\|ePdfPermissions_DocAssembly\|ePdfPermissions_HighPrint, EPdfEncryptAlgorithm eAlgorithm=ePdfEncryptAlgorithm_RC4V1, EPdfKeyLength eKeyLength=ePdfKeyLength_40)

static PdfEncrypt *	CreatePdfEncrypt (const PdfObject *pObject)

static PdfEncrypt *	CreatePdfEncrypt (const PdfEncrypt &rhs)

static int	GetEnabledEncryptionAlgorithms ()

static void	SetEnabledEncryptionAlgorithms (int nEncryptionAlgorithms)

static bool	IsEncryptionEnabled (EPdfEncryptAlgorithm eAlgorithm)

static PdfString	GetMD5String (const unsigned char *pBuffer, int nLength)

Protected Member Functions inherited from PoDoFo::PdfEncrypt
void	PadPassword (const std::string &password, unsigned char pswd[32])
	Pad a password to 32 characters.

void	ComputeOwnerKey (unsigned char userPad[32], unsigned char ownerPad[32], int keylength, int revision, bool authenticate, unsigned char ownerKey[32])
	Compute owner key.

void	ComputeEncryptionKey (const std::string &documentID, unsigned char userPad[32], unsigned char ownerKey[32], int pValue, int keyLength, int revision, unsigned char userKey[32])
	Compute encryption key and user key.

bool	CheckKey (unsigned char key1[32], unsigned char key2[32])
	Check two keys for equality.

void	RC4 (unsigned char key, int keylen, unsigned char textin, pdf_long textlen, unsigned char *textout)
	RC4 encryption. More...

void	GenerateInitialVector (unsigned char iv[16])
	Generate initial vector.

void	CreateObjKey (unsigned char objkey[16], int *pnKeyLen) const

Static Protected Member Functions inherited from PoDoFo::PdfEncrypt
static void	GetMD5Binary (const unsigned char data, int length, unsigned char digest)
	Calculate the binary MD5 message digest of the given data.

Protected Attributes inherited from PoDoFo::PdfEncrypt
EPdfEncryptAlgorithm	m_eAlgorithm
	The used encryption algorithm.

int	m_keyLength
	Length of encryption key.

int	m_rValue
	Revision.

int	m_pValue
	P entry in pdf document.

EPdfKeyLength	m_eKeyLength
	The key length.

std::string	m_userPass
	User password.

std::string	m_ownerPass
	Owner password.

unsigned char	m_rc4key [16]
	last RC4 key

unsigned char	m_rc4last [256]
	last RC4 state table

unsigned char	m_uValue [32]
	U entry in pdf document.

unsigned char	m_oValue [32]
	O entry in pdf document.

Detailed Description

A class that is used to encrypt a PDF file (AES-128)

Client code is working only with PdfEncrypt class and knows nothing about PdfEncryptAES, it is created through CreatePdfEncrypt factory method

Member Function Documentation

void PoDoFo::PdfEncryptAES::CreateEncryptionDictionary ( PdfDictionary & rDictionary ) const

virtual

Fill all keys into a encryption dictionary. This dictionary is usually added to the PDF files trailer under the /Encryption key.

Parameters

rDictionary an empty dictionary which is filled with information about the used encryption algorithm

Implements PoDoFo::PdfEncrypt.

PdfInputStream * PoDoFo::PdfEncryptAES::CreateEncryptionInputStream ( PdfInputStream * pInputStream )

virtual

Create a PdfInputStream that decrypts all data read from it using the current settings of the PdfEncrypt object.

Warning: Currently only RC4 based encryption is supported using output streams!

Parameters

pInputStream the created PdfInputStream reads all decrypted data to this input stream.

Returns: a PdfInputStream that decrypts all data.

Implements PoDoFo::PdfEncrypt.

PdfOutputStream * PoDoFo::PdfEncryptAES::CreateEncryptionOutputStream ( PdfOutputStream * pOutputStream )

virtual

Create a PdfOutputStream that encrypts all data written to it using the current settings of the PdfEncrypt object.

Warning: Currently only RC4 based encryption is supported using output streams!

Parameters

pOutputStream the created PdfOutputStream writes all encrypted data to this output stream.

Returns: a PdfOutputStream that encryts all data.

Implements PoDoFo::PdfEncrypt.

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation