package/source/manifest/ManifestExport.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <com/sun/star/xml/sax/XExtendedDocumentHandler.hpp>
  21 #include <com/sun/star/xml/crypto/DigestID.hpp>
  22 #include <com/sun/star/xml/crypto/CipherID.hpp>
  23 #include <com/sun/star/beans/PropertyValue.hpp>
  24 #include <com/sun/star/beans/NamedValue.hpp>
  25 #include <com/sun/star/uno/RuntimeException.hpp>
  26
  27 #include "ManifestDefines.hxx"
  28 #include "ManifestExport.hxx"
  29
  30 #include <osl/diagnose.h>
  31 #include <rtl/ustrbuf.hxx>
  32 #include <rtl/ref.hxx>
  33 #include <sal/log.hxx>
  34 #include <comphelper/base64.hxx>
  35 #include <comphelper/documentconstants.hxx>
  36 #include <comphelper/attributelist.hxx>
  37
  38 using namespace ::com::sun::star;
  39
  40 #if OSL_DEBUG_LEVEL > 0
  41 #define THROW_WHERE SAL_WHERE
  42 #else
  43 #define THROW_WHERE ""
  44 #endif
  45
  46 ManifestExport::ManifestExport( uno::Reference< xml::sax::XDocumentHandler > const & xHandler,  const uno::Sequence< uno::Sequence < beans::PropertyValue > >& rManList )
  47 {
  48     static const OUStringLiteral sKeyInfo                     ( u"KeyInfo" );
  49     static const OUStringLiteral sPgpKeyIDProperty            ( u"KeyId" );
  50     static const OUStringLiteral sPgpKeyPacketProperty        ( u"KeyPacket" );
  51     static const OUStringLiteral sCipherValueProperty         ( u"CipherValue" );
  52     static const OUStringLiteral sFullPathProperty     ( u"FullPath" );
  53     static const OUStringLiteral sVersionProperty  ( u"Version" );
  54     static const OUStringLiteral sMediaTypeProperty    ( u"MediaType" );
  55     static const OUStringLiteral sIterationCountProperty   ( u"IterationCount" );
  56     static const OUStringLiteral sDerivedKeySizeProperty  ( u"DerivedKeySize" );
  57     static const OUStringLiteral sSaltProperty         ( u"Salt" );
  58     static const OUStringLiteral sInitialisationVectorProperty( u"InitialisationVector" );
  59     static const OUStringLiteral sSizeProperty         ( u"Size" );
  60     static const OUStringLiteral sDigestProperty       ( u"Digest" );
  61     static const OUStringLiteral sEncryptionAlgProperty    ( u"EncryptionAlgorithm" );
  62     static const OUStringLiteral sStartKeyAlgProperty  ( u"StartKeyAlgorithm" );
  63     static const OUStringLiteral sDigestAlgProperty    ( u"DigestAlgorithm" );
  64
  65     static const OUStringLiteral sWhiteSpace           ( u" " );
  66
  67     const OUString sSHA256_URL_ODF12     ( SHA256_URL_ODF12 );
  68     const OUString  sSHA1_Name           ( SHA1_NAME );
  69
  70     const OUString  sSHA1_1k_Name        ( SHA1_1K_NAME );
  71     const OUString  sSHA256_1k_URL       ( SHA256_1K_URL );
  72
  73     const OUString  sBlowfish_Name       ( BLOWFISH_NAME );
  74     const OUString  sAES256_URL          ( AES256_URL );
  75
  76     const OUString  sPBKDF2_Name         ( PBKDF2_NAME );
  77     const OUString  sPGP_Name            ( PGP_NAME );
  78
  79     rtl::Reference<::comphelper::AttributeList> pRootAttrList = new ::comphelper::AttributeList;
  80
  81     // find the mediatype of the document if any
  82     OUString aDocMediaType;
  83     OUString aDocVersion;
  84     const uno::Sequence<beans::PropertyValue>* pRootFolderPropSeq = nullptr;
  85     for (const uno::Sequence < beans::PropertyValue >& rSequence : rManList)
  86     {
  87         OUString aMediaType;
  88         OUString aPath;
  89         OUString aVersion;
  90
  91         for (const beans::PropertyValue& rValue : rSequence)
  92         {
  93             if (rValue.Name == sMediaTypeProperty )
  94             {
  95                 rValue.Value >>= aMediaType;
  96             }
  97             else if (rValue.Name == sFullPathProperty )
  98             {
  99                 rValue.Value >>= aPath;
 100             }
 101             else if (rValue.Name == sVersionProperty )
 102             {
 103                 rValue.Value >>= aVersion;
 104             }
 105
 106             if ( !aPath.isEmpty() && !aMediaType.isEmpty() && !aVersion.isEmpty() )
 107                 break;
 108         }
 109
 110         if ( aPath == "/" )
 111         {
 112             aDocMediaType = aMediaType;
 113             aDocVersion = aVersion;
 114             pRootFolderPropSeq = &rSequence;
 115             break;
 116         }
 117     }
 118
 119     bool bProvideDTD = false;
 120     bool bAcceptNonemptyVersion = false;
 121     bool bStoreStartKeyGeneration = false;
 122     if ( !aDocMediaType.isEmpty() )
 123     {
 124         if ( aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_TEXT_ASCII
 125           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_TEXT_WEB_ASCII
 126           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_TEXT_GLOBAL_ASCII
 127           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_DRAWING_ASCII
 128           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_PRESENTATION_ASCII
 129           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_SPREADSHEET_ASCII
 130           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_CHART_ASCII
 131           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_DATABASE_ASCII
 132           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_FORMULA_ASCII
 133           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_TEXT_TEMPLATE_ASCII
 134           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_TEXT_GLOBAL_TEMPLATE_ASCII
 135           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_DRAWING_TEMPLATE_ASCII
 136           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_PRESENTATION_TEMPLATE_ASCII
 137           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_SPREADSHEET_TEMPLATE_ASCII
 138           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_CHART_TEMPLATE_ASCII
 139           || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_FORMULA_TEMPLATE_ASCII )
 140
 141         {
 142             // oasis format
 143             pRootAttrList->AddAttribute ( ATTRIBUTE_XMLNS,
 144                                         MANIFEST_OASIS_NAMESPACE );
 145             bAcceptNonemptyVersion = true;
 146             if ( aDocVersion.compareTo( ODFVER_012_TEXT ) >= 0 )
 147             {
 148                 // this is ODF12 or later generation, let encrypted
 149                 // streams contain start-key-generation entry
 150                 bStoreStartKeyGeneration = true;
 151                 pRootAttrList->AddAttribute ( ATTRIBUTE_VERSION, aDocVersion );
 152                 // plus gpg4libre extensions - loext NS for that
 153                 pRootAttrList->AddAttribute ( ATTRIBUTE_XMLNS_LOEXT,
 154                                               MANIFEST_LOEXT_NAMESPACE );
 155             }
 156         }
 157         else
 158         {
 159             // even if it is no SO6 format the namespace must be specified
 160             // thus SO6 format is used as default one
 161             pRootAttrList->AddAttribute ( ATTRIBUTE_XMLNS,
 162                                         MANIFEST_NAMESPACE );
 163
 164             bProvideDTD = true;
 165         }
 166     }
 167
 168     xHandler->startDocument();
 169     uno::Reference < xml::sax::XExtendedDocumentHandler > xExtHandler ( xHandler, uno::UNO_QUERY );
 170     if ( xExtHandler.is() && bProvideDTD )
 171     {
 172         xExtHandler->unknown ( MANIFEST_DOCTYPE );
 173         xHandler->ignorableWhitespace ( sWhiteSpace );
 174     }
 175     xHandler->startElement( ELEMENT_MANIFEST, pRootAttrList );
 176
 177     const uno::Any *pKeyInfoProperty = nullptr;
 178     if ( pRootFolderPropSeq )
 179     {
 180         // do we have package-wide encryption info?
 181         for (const beans::PropertyValue& rValue : *pRootFolderPropSeq)
 182         {
 183             if (rValue.Name == sKeyInfo )
 184                 pKeyInfoProperty = &rValue.Value;
 185         }
 186
 187         if ( pKeyInfoProperty )
 188         {
 189             // yeah, so that goes directly below the manifest:manifest
 190             // element
 191             OUStringBuffer aBuffer;
 192
 193             xHandler->ignorableWhitespace ( sWhiteSpace );
 194
 195             // ==== manifest:keyinfo & children
 196             bool const isODF13(aDocVersion.compareTo(ODFVER_013_TEXT) >= 0);
 197             if (!isODF13)
 198             {
 199                 xHandler->startElement(ELEMENT_MANIFEST_KEYINFO, nullptr);
 200             }
 201             xHandler->ignorableWhitespace ( sWhiteSpace );
 202
 203             uno::Sequence< uno::Sequence < beans::NamedValue > > aKeyInfoSequence;
 204             *pKeyInfoProperty >>= aKeyInfoSequence;
 205             for (const uno::Sequence<beans::NamedValue>& rKeyInfoSequence : std::as_const(aKeyInfoSequence))
 206             {
 207                 uno::Sequence < sal_Int8 > aPgpKeyID;
 208                 uno::Sequence < sal_Int8 > aPgpKeyPacket;
 209                 uno::Sequence < sal_Int8 > aCipherValue;
 210                 for (const beans::NamedValue& rNValue : rKeyInfoSequence)
 211                 {
 212                     if (rNValue.Name == sPgpKeyIDProperty )
 213                         rNValue.Value >>= aPgpKeyID;
 214                     else if (rNValue.Name == sPgpKeyPacketProperty )
 215                         rNValue.Value >>= aPgpKeyPacket;
 216                     else if (rNValue.Name == sCipherValueProperty )
 217                         rNValue.Value >>= aCipherValue;
 218                 }
 219
 220                 if (aPgpKeyID.hasElements() && aCipherValue.hasElements() )
 221                 {
 222                     // ==== manifest:encrypted-key & children - one for each recipient
 223                     xHandler->startElement(isODF13 ? OUString(ELEMENT_ENCRYPTEDKEY13) : OUString(ELEMENT_ENCRYPTEDKEY), nullptr);
 224                     xHandler->ignorableWhitespace ( sWhiteSpace );
 225
 226                     rtl::Reference<::comphelper::AttributeList> pNewAttrList = new ::comphelper::AttributeList;
 227                     // TODO: the algorithm should rather be configurable
 228                     pNewAttrList->AddAttribute(
 229                         isODF13 ? OUString(ATTRIBUTE_ALGORITHM13) : OUString(ATTRIBUTE_ALGORITHM),
 230                                                  "http://www.w3.org/2001/04/xmlenc#rsa-oaep-mgf1p" );
 231                     xHandler->startElement(isODF13 ? OUString(ELEMENT_ENCRYPTIONMETHOD13) : OUString(ELEMENT_ENCRYPTIONMETHOD), pNewAttrList);
 232                     xHandler->endElement(isODF13 ? OUString(ELEMENT_ENCRYPTIONMETHOD13) : OUString(ELEMENT_ENCRYPTIONMETHOD));
 233                     xHandler->ignorableWhitespace ( sWhiteSpace );
 234
 235                     // note: the mismatch here corresponds to ODF 1.3 cs01 schema
 236                     xHandler->startElement(isODF13 ? OUString(ELEMENT_MANIFEST13_KEYINFO) : OUString(ELEMENT_MANIFEST_KEYINFO), nullptr);
 237                     xHandler->ignorableWhitespace ( sWhiteSpace );
 238
 239                     xHandler->startElement(isODF13 ? OUString(ELEMENT_PGPDATA13) : OUString(ELEMENT_PGPDATA), nullptr);
 240                     xHandler->ignorableWhitespace ( sWhiteSpace );
 241
 242                     xHandler->startElement(isODF13 ? OUString(ELEMENT_PGPKEYID13) : OUString(ELEMENT_PGPKEYID), nullptr);
 243                     ::comphelper::Base64::encode(aBuffer, aPgpKeyID);
 244                     xHandler->characters( aBuffer.makeStringAndClear() );
 245                     xHandler->endElement(isODF13 ? OUString(ELEMENT_PGPKEYID13) : OUString(ELEMENT_PGPKEYID));
 246                     xHandler->ignorableWhitespace ( sWhiteSpace );
 247
 248                     // key packet is optional
 249                     if (aPgpKeyPacket.hasElements())
 250                     {
 251                         xHandler->startElement(isODF13 ? OUString(ELEMENT_PGPKEYPACKET13) : OUString(ELEMENT_PGPKEYPACKET), nullptr);
 252                         ::comphelper::Base64::encode(aBuffer, aPgpKeyPacket);
 253                         xHandler->characters( aBuffer.makeStringAndClear() );
 254                         xHandler->endElement(isODF13 ? OUString(ELEMENT_PGPKEYPACKET13) : OUString(ELEMENT_PGPKEYPACKET));
 255                         xHandler->ignorableWhitespace ( sWhiteSpace );
 256                     }
 257
 258                     xHandler->endElement(isODF13 ? OUString(ELEMENT_PGPDATA13) : OUString(ELEMENT_PGPDATA));
 259                     xHandler->ignorableWhitespace ( sWhiteSpace );
 260
 261                     xHandler->endElement(isODF13 ? OUString(ELEMENT_MANIFEST13_KEYINFO) : OUString(ELEMENT_MANIFEST_KEYINFO));
 262                     xHandler->ignorableWhitespace ( sWhiteSpace );
 263
 264                     xHandler->startElement(isODF13 ? OUString(ELEMENT_CIPHERDATA13) : OUString(ELEMENT_CIPHERDATA), nullptr);
 265                     xHandler->ignorableWhitespace ( sWhiteSpace );
 266
 267                     xHandler->startElement(isODF13 ? OUString(ELEMENT_CIPHERVALUE13) : OUString(ELEMENT_CIPHERVALUE), nullptr);
 268                     ::comphelper::Base64::encode(aBuffer, aCipherValue);
 269                     xHandler->characters( aBuffer.makeStringAndClear() );
 270                     xHandler->endElement(isODF13 ? OUString(ELEMENT_CIPHERVALUE13) : OUString(ELEMENT_CIPHERVALUE));
 271                     xHandler->ignorableWhitespace ( sWhiteSpace );
 272
 273                     xHandler->endElement(isODF13 ? OUString(ELEMENT_CIPHERDATA13) : OUString(ELEMENT_CIPHERDATA));
 274                     xHandler->ignorableWhitespace ( sWhiteSpace );
 275
 276                     xHandler->endElement(isODF13 ? OUString(ELEMENT_ENCRYPTEDKEY13) : OUString(ELEMENT_ENCRYPTEDKEY));
 277                     xHandler->ignorableWhitespace ( sWhiteSpace );
 278                 }
 279             }
 280
 281             if (!isODF13)
 282             {
 283                 xHandler->endElement(ELEMENT_MANIFEST_KEYINFO);
 284             }
 285             xHandler->ignorableWhitespace ( sWhiteSpace );
 286         }
 287     }
 288
 289     // now write individual file entries
 290     for (const uno::Sequence<beans::PropertyValue>& rSequence : rManList)
 291     {
 292         rtl::Reference<::comphelper::AttributeList> pAttrList = new ::comphelper::AttributeList;
 293         OUString aString;
 294         const uno::Any *pVector = nullptr, *pSalt = nullptr, *pIterationCount = nullptr, *pDigest = nullptr, *pDigestAlg = nullptr, *pEncryptAlg = nullptr, *pStartKeyAlg = nullptr, *pDerivedKeySize = nullptr;
 295         for (const beans::PropertyValue& rValue : rSequence)
 296         {
 297             if (rValue.Name == sMediaTypeProperty )
 298             {
 299                 rValue.Value >>= aString;
 300                 pAttrList->AddAttribute ( ATTRIBUTE_MEDIA_TYPE, aString );
 301             }
 302             else if (rValue.Name == sVersionProperty )
 303             {
 304                 rValue.Value >>= aString;
 305                 // the version is stored only if it is not empty
 306                 if ( bAcceptNonemptyVersion && !aString.isEmpty() )
 307                     pAttrList->AddAttribute ( ATTRIBUTE_VERSION, aString );
 308             }
 309             else if (rValue.Name == sFullPathProperty )
 310             {
 311                 rValue.Value >>= aString;
 312                 pAttrList->AddAttribute ( ATTRIBUTE_FULL_PATH, aString );
 313             }
 314             else if (rValue.Name == sSizeProperty )
 315             {
 316                 sal_Int64 nSize = 0;
 317                 rValue.Value >>= nSize;
 318                 pAttrList->AddAttribute ( ATTRIBUTE_SIZE, OUString::number( nSize ) );
 319             }
 320             else if (rValue.Name == sInitialisationVectorProperty )
 321                 pVector = &rValue.Value;
 322             else if (rValue.Name == sSaltProperty )
 323                 pSalt = &rValue.Value;
 324             else if (rValue.Name == sIterationCountProperty )
 325                 pIterationCount = &rValue.Value;
 326             else if (rValue.Name == sDigestProperty )
 327                 pDigest = &rValue.Value;
 328             else if (rValue.Name == sDigestAlgProperty )
 329                 pDigestAlg = &rValue.Value;
 330             else if (rValue.Name == sEncryptionAlgProperty )
 331                 pEncryptAlg = &rValue.Value;
 332             else if (rValue.Name == sStartKeyAlgProperty )
 333                 pStartKeyAlg = &rValue.Value;
 334             else if (rValue.Name == sDerivedKeySizeProperty )
 335                 pDerivedKeySize = &rValue.Value;
 336         }
 337
 338         xHandler->ignorableWhitespace ( sWhiteSpace );
 339         xHandler->startElement( ELEMENT_FILE_ENTRY , pAttrList);
 340         if ( pVector && pSalt && pIterationCount && pDigest && pDigestAlg && pEncryptAlg && pStartKeyAlg && pDerivedKeySize )
 341         {
 342             // ==== Encryption Data
 343             rtl::Reference<::comphelper::AttributeList> pNewAttrList = new ::comphelper::AttributeList;
 344             OUStringBuffer aBuffer;
 345             uno::Sequence < sal_Int8 > aSequence;
 346
 347             xHandler->ignorableWhitespace ( sWhiteSpace );
 348
 349             // ==== Digest
 350             OUString sChecksumType;
 351             sal_Int32 nDigestAlgID = 0;
 352             *pDigestAlg >>= nDigestAlgID;
 353             if ( nDigestAlgID == xml::crypto::DigestID::SHA256_1K )
 354                 sChecksumType = sSHA256_1k_URL;
 355             else if ( nDigestAlgID == xml::crypto::DigestID::SHA1_1K )
 356                 sChecksumType = sSHA1_1k_Name;
 357             else
 358                 throw uno::RuntimeException( THROW_WHERE "Unexpected digest algorithm is provided!" );
 359
 360             pNewAttrList->AddAttribute ( ATTRIBUTE_CHECKSUM_TYPE, sChecksumType );
 361             *pDigest >>= aSequence;
 362             ::comphelper::Base64::encode(aBuffer, aSequence);
 363             pNewAttrList->AddAttribute ( ATTRIBUTE_CHECKSUM, aBuffer.makeStringAndClear() );
 364
 365             xHandler->startElement( ELEMENT_ENCRYPTION_DATA , pNewAttrList);
 366
 367             // ==== Algorithm
 368             pNewAttrList = new ::comphelper::AttributeList;
 369
 370             sal_Int32 nEncAlgID = 0;
 371             sal_Int32 nDerivedKeySize = 0;
 372             *pEncryptAlg >>= nEncAlgID;
 373             *pDerivedKeySize >>= nDerivedKeySize;
 374
 375             OUString sEncAlgName;
 376             if ( nEncAlgID == xml::crypto::CipherID::AES_CBC_W3C_PADDING )
 377             {
 378                 OSL_ENSURE( nDerivedKeySize, "Unexpected key size is provided!" );
 379                 if ( nDerivedKeySize != 32 )
 380                     throw uno::RuntimeException( THROW_WHERE "Unexpected key size is provided!" );
 381
 382                 sEncAlgName = sAES256_URL;
 383             }
 384             else if ( nEncAlgID == xml::crypto::CipherID::BLOWFISH_CFB_8 )
 385             {
 386                 sEncAlgName = sBlowfish_Name;
 387             }
 388             else
 389                 throw uno::RuntimeException( THROW_WHERE "Unexpected encryption algorithm is provided!" );
 390
 391             pNewAttrList->AddAttribute ( ATTRIBUTE_ALGORITHM_NAME, sEncAlgName );
 392
 393             *pVector >>= aSequence;
 394             ::comphelper::Base64::encode(aBuffer, aSequence);
 395             pNewAttrList->AddAttribute ( ATTRIBUTE_INITIALISATION_VECTOR, aBuffer.makeStringAndClear() );
 396
 397             xHandler->ignorableWhitespace ( sWhiteSpace );
 398             xHandler->startElement( ELEMENT_ALGORITHM , pNewAttrList);
 399             xHandler->ignorableWhitespace ( sWhiteSpace );
 400             xHandler->endElement( ELEMENT_ALGORITHM );
 401
 402             if ( bStoreStartKeyGeneration )
 403             {
 404                 // ==== Start Key Generation
 405                 pNewAttrList = new ::comphelper::AttributeList;
 406
 407                 OUString sStartKeyAlg;
 408                 OUString sStartKeySize;
 409                 sal_Int32 nStartKeyAlgID = 0;
 410                 *pStartKeyAlg >>= nStartKeyAlgID;
 411                 if ( nStartKeyAlgID == xml::crypto::DigestID::SHA256 )
 412                 {
 413                     sStartKeyAlg = sSHA256_URL_ODF12; // TODO use SHA256_URL
 414                     aBuffer.append( sal_Int32(32) );
 415                     sStartKeySize = aBuffer.makeStringAndClear();
 416                 }
 417                 else if ( nStartKeyAlgID == xml::crypto::DigestID::SHA1 )
 418                 {
 419                     sStartKeyAlg = sSHA1_Name;
 420                     aBuffer.append( sal_Int32(20) );
 421                     sStartKeySize = aBuffer.makeStringAndClear();
 422                 }
 423                 else
 424                     throw uno::RuntimeException( THROW_WHERE "Unexpected start key algorithm is provided!" );
 425
 426                 pNewAttrList->AddAttribute ( ATTRIBUTE_START_KEY_GENERATION_NAME, sStartKeyAlg );
 427                 pNewAttrList->AddAttribute ( ATTRIBUTE_KEY_SIZE, sStartKeySize );
 428
 429                 xHandler->ignorableWhitespace ( sWhiteSpace );
 430                 xHandler->startElement( ELEMENT_START_KEY_GENERATION , pNewAttrList);
 431                 xHandler->ignorableWhitespace ( sWhiteSpace );
 432                 xHandler->endElement( ELEMENT_START_KEY_GENERATION );
 433             }
 434
 435             // ==== Key Derivation
 436             pNewAttrList = new ::comphelper::AttributeList;
 437
 438             if (pKeyInfoProperty)
 439             {
 440                 pNewAttrList->AddAttribute(ATTRIBUTE_KEY_DERIVATION_NAME,
 441                                            sPGP_Name);
 442                 // no start-key-generation needed, our session key has
 443                 // max size already
 444                 bStoreStartKeyGeneration = false;
 445             }
 446             else
 447             {
 448                 pNewAttrList->AddAttribute(ATTRIBUTE_KEY_DERIVATION_NAME,
 449                                            sPBKDF2_Name);
 450
 451                 if (bStoreStartKeyGeneration)
 452                 {
 453                     aBuffer.append(nDerivedKeySize);
 454                     pNewAttrList->AddAttribute ( ATTRIBUTE_KEY_SIZE, aBuffer.makeStringAndClear() );
 455                 }
 456
 457                 sal_Int32 nCount = 0;
 458                 *pIterationCount >>= nCount;
 459                 aBuffer.append(nCount);
 460                 pNewAttrList->AddAttribute ( ATTRIBUTE_ITERATION_COUNT, aBuffer.makeStringAndClear() );
 461
 462                 *pSalt >>= aSequence;
 463                 ::comphelper::Base64::encode(aBuffer, aSequence);
 464                 pNewAttrList->AddAttribute ( ATTRIBUTE_SALT, aBuffer.makeStringAndClear() );
 465             }
 466
 467             xHandler->ignorableWhitespace(sWhiteSpace);
 468             xHandler->startElement(ELEMENT_KEY_DERIVATION, pNewAttrList);
 469             xHandler->ignorableWhitespace(sWhiteSpace);
 470             xHandler->endElement(ELEMENT_KEY_DERIVATION);
 471
 472             xHandler->ignorableWhitespace ( sWhiteSpace );
 473             xHandler->endElement( ELEMENT_ENCRYPTION_DATA );
 474         }
 475         xHandler->ignorableWhitespace ( sWhiteSpace );
 476         xHandler->endElement( ELEMENT_FILE_ENTRY );
 477     }
 478     xHandler->ignorableWhitespace ( sWhiteSpace );
 479     xHandler->endElement( ELEMENT_MANIFEST );
 480     xHandler->endDocument();
 481 }
 482
 483 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */