summaryrefslogtreecommitdiff
path: root/svx/inc/mscodec.hxx
diff options
context:
space:
mode:
Diffstat (limited to 'svx/inc/mscodec.hxx')
-rw-r--r--svx/inc/mscodec.hxx343
1 files changed, 0 insertions, 343 deletions
diff --git a/svx/inc/mscodec.hxx b/svx/inc/mscodec.hxx
deleted file mode 100644
index 4ee508d661dd..000000000000
--- a/svx/inc/mscodec.hxx
+++ /dev/null
@@ -1,343 +0,0 @@
-/*************************************************************************
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * Copyright 2008 by Sun Microsystems, Inc.
- *
- * OpenOffice.org - a multi-platform office productivity suite
- *
- * $RCSfile: mscodec.hxx,v $
- * $Revision: 1.5 $
- *
- * This file is part of OpenOffice.org.
- *
- * OpenOffice.org is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 3
- * only, as published by the Free Software Foundation.
- *
- * OpenOffice.org is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License version 3 for more details
- * (a copy is included in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU Lesser General Public License
- * version 3 along with OpenOffice.org. If not, see
- * <http://www.openoffice.org/license.html>
- * for a copy of the LGPLv3 License.
- *
- ************************************************************************/
-
-#ifndef SVX_MSCODEC_HXX
-#define SVX_MSCODEC_HXX
-
-#include "rtl/cipher.h"
-#include "rtl/digest.h"
-#include "svx/svxdllapi.h"
-
-namespace svx {
-
-// ============================================================================
-
-/** Encodes and decodes data from protected MSO 95- documents.
- */
-class SVX_DLLPUBLIC MSCodec_Xor95
-{
-public:
- explicit MSCodec_Xor95(int nRotateDistance);
- virtual ~MSCodec_Xor95();
-
- /** Initializes the algorithm with the specified password.
-
- @param pPassData
- Character array containing the password. Must be zero terminated,
- which results in a maximum length of 15 characters.
- */
- void InitKey( const sal_uInt8 pnPassData[ 16 ] );
-
- /** Verifies the validity of the password using the passed key and hash.
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used.
-
- @param nKey
- Password key value read from the file.
- @param nHash
- Password hash value read from the file.
-
- @return
- true = Test was successful.
- */
- bool VerifyKey( sal_uInt16 nKey, sal_uInt16 nHash ) const;
-
- /** Reinitializes the codec to start a new memory block.
-
- Resets the internal key offset to 0.
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used.
- */
- void InitCipher();
-
- /** Decodes a block of memory inplace.
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used.
-
- @param pnData
- Encrypted data block. Will contain the decrypted data afterwards.
- @param nBytes
- Size of the passed data block.
- */
- virtual void Decode( sal_uInt8* pnData, sal_Size nBytes )=0;
-
- /** Lets the cipher skip a specific amount of bytes.
-
- This function sets the cipher to the same state as if the specified
- amount of data has been decoded with one or more calls of Decode().
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used.
-
- @param nBytes
- Number of bytes to be skipped (cipher "seeks" forward).
- */
- void Skip( sal_Size nBytes );
-
- // static -----------------------------------------------------------------
-
- /** Calculates the 16-bit hash value for the given password.
-
- The password data may be longer than 16 bytes. The array does not need
- to be terminated with a NULL byte (but it can without invalidating the
- result).
- */
- static sal_uInt16 GetHash( const sal_uInt8* pnPassData, sal_Size nSize );
-
-protected:
- sal_uInt8 mpnKey[ 16 ]; /// Encryption key.
- sal_Size mnOffset; /// Key offset.
-
-private:
- SVX_DLLPRIVATE MSCodec_Xor95( const MSCodec_Xor95& );
- SVX_DLLPRIVATE MSCodec_Xor95& operator=( const MSCodec_Xor95& );
-
- sal_uInt16 mnKey; /// Base key from password.
- sal_uInt16 mnHash; /// Hash value from password.
- int mnRotateDistance;
-};
-
-/** Encodes and decodes data from protected MSO XLS 95- documents.
- */
-class SVX_DLLPUBLIC MSCodec_XorXLS95 : public MSCodec_Xor95
-{
-public:
- explicit MSCodec_XorXLS95() : MSCodec_Xor95(2) {}
-
- /** Decodes a block of memory inplace.
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used.
-
- @param pnData
- Encrypted data block. Will contain the decrypted data afterwards.
- @param nBytes
- Size of the passed data block.
- */
- virtual void Decode( sal_uInt8* pnData, sal_Size nBytes );
-};
-
-/** Encodes and decodes data from protected MSO Word 95- documents.
- */
-class SVX_DLLPUBLIC MSCodec_XorWord95 : public MSCodec_Xor95
-{
-public:
- explicit MSCodec_XorWord95() : MSCodec_Xor95(7) {}
-
- /** Decodes a block of memory inplace.
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used.
-
- @param pnData
- Encrypted data block. Will contain the decrypted data afterwards.
- @param nBytes
- Size of the passed data block.
- */
- virtual void Decode( sal_uInt8* pnData, sal_Size nBytes );
-};
-
-
-// ============================================================================
-
-/** Encodes and decodes data from protected MSO 97+ documents.
-
- This is a wrapper class around low level cryptographic functions from RTL.
- Implementation is based on the wvDecrypt package by Caolan McNamara:
- http://www.csn.ul.ie/~caolan/docs/wvDecrypt.html
- */
-class SVX_DLLPUBLIC MSCodec_Std97
-{
-public:
- explicit MSCodec_Std97();
- ~MSCodec_Std97();
-
- /** Initializes the algorithm with the specified password and document ID.
-
- @param pPassData
- Wide character array containing the password. Must be zero
- terminated, which results in a maximum length of 15 characters.
- @param pUnique
- Unique document identifier read from or written to the file.
- */
- void InitKey(
- const sal_uInt16 pPassData[ 16 ],
- const sal_uInt8 pUnique[ 16 ] );
-
- /** Verifies the validity of the password using the passed salt data.
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used.
-
- @param pSaltData
- Salt data block read from the file.
- @param pSaltDigest
- Salt digest read from the file.
-
- @return
- true = Test was successful.
- */
- bool VerifyKey(
- const sal_uInt8 pSaltData[ 16 ],
- const sal_uInt8 pSaltDigest[ 16 ] );
-
- /** Rekeys the codec using the specified counter.
-
- After reading a specific amount of data the cipher algorithm needs to
- be rekeyed using a counter that counts the data blocks.
-
- The block size is for example 512 Bytes for Word files and 1024 Bytes
- for Excel files.
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used.
-
- @param nCounter
- Block counter used to rekey the cipher.
- */
- bool InitCipher( sal_uInt32 nCounter );
-
- /** Creates an MD5 digest of salt digest. */
- bool CreateSaltDigest(
- const sal_uInt8 nSaltData[16], sal_uInt8 nSaltDigest[16] );
-
- /** Encodes a block of memory.
-
- @see rtl_cipher_encode()
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used. The destination buffer must be able to take all
- unencoded data from the source buffer (usually this means it must be
- as long as or longer than the source buffer).
-
- @param pData
- Unencrypted source data block.
- @param nDatLen
- Size of the passed source data block.
- @param pBuffer
- Destination buffer for the encrypted data.
- @param nBufLen
- Size of the destination buffer.
-
- @return
- true = Encoding was successful (no error occured).
- */
- bool Encode(
- const void* pData, sal_Size nDatLen,
- sal_uInt8* pBuffer, sal_Size nBufLen );
-
- /** Decodes a block of memory.
-
- @see rtl_cipher_decode()
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used. The destination buffer must be able to take all
- encoded data from the source buffer (usually this means it must be
- as long as or longer than the source buffer).
-
- @param pData
- Encrypted source data block.
- @param nDatLen
- Size of the passed source data block.
- @param pBuffer
- Destination buffer for the decrypted data.
- @param nBufLen
- Size of the destination buffer.
-
- @return
- true = Decoding was successful (no error occured).
- */
- bool Decode(
- const void* pData, sal_Size nDatLen,
- sal_uInt8* pBuffer, sal_Size nBufLen );
-
- /** Lets the cipher skip a specific amount of bytes.
-
- This function sets the cipher to the same state as if the specified
- amount of data has been decoded with one or more calls of Decode().
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used.
-
- @param nDatLen
- Number of bytes to be skipped (cipher "seeks" forward).
- */
- bool Skip( sal_Size nDatLen );
-
- /** Gets salt data and salt digest.
-
- @precond
- The codec must be initialized with InitKey() before this function
- can be used.
-
- @param pSalt
- Salt, a random number.
- @param pSaltData
- Salt data block generated from the salt.
- @param pSaltDigest
- Salt digest generated from the salt.
- */
- void GetEncryptKey (
- const sal_uInt8 pSalt[16],
- sal_uInt8 pSaltData[16],
- sal_uInt8 pSaltDigest[16]);
-
-private:
- void GetDigestFromSalt( const sal_uInt8 pSaltData[16], sal_uInt8 pDigest[16] );
-
-private:
- SVX_DLLPRIVATE MSCodec_Std97( const MSCodec_Std97& );
- SVX_DLLPRIVATE MSCodec_Std97& operator=( const MSCodec_Std97& );
-
- rtlCipher m_hCipher;
- rtlDigest m_hDigest;
- sal_uInt8 m_pDigestValue[ RTL_DIGEST_LENGTH_MD5 ];
-};
-
-// ============================================================================
-
-} // namespace svx
-
-#endif
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 13:58:23 +0000