1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_package.hxx" 26 27 #include <rtl/cipher.h> 28 #include <rtl/ref.hxx> 29 30 #include "blowfishcontext.hxx" 31 32 using namespace ::com::sun::star; 33 34 // static 35 uno::Reference< xml::crypto::XCipherContext > BlowfishCFB8CipherContext::Create( const uno::Sequence< sal_Int8 >& aDerivedKey, const uno::Sequence< sal_Int8 >& aInitVector, bool bEncrypt ) 36 { 37 ::rtl::Reference< BlowfishCFB8CipherContext > xResult = new BlowfishCFB8CipherContext(); 38 xResult->m_pCipher = rtl_cipher_create( rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeStream ); 39 if ( !xResult->m_pCipher ) 40 throw uno::RuntimeException( ::rtl::OUString::createFromAscii( "Can not create cipher!\n" ), 41 uno::Reference< XInterface >() ); 42 43 if ( rtl_Cipher_E_None != rtl_cipher_init( 44 xResult->m_pCipher, 45 bEncrypt ? rtl_Cipher_DirectionEncode : rtl_Cipher_DirectionDecode, 46 reinterpret_cast< const sal_uInt8* >( aDerivedKey.getConstArray() ), 47 aDerivedKey.getLength(), 48 reinterpret_cast< const sal_uInt8* >( aInitVector.getConstArray() ), 49 aInitVector.getLength() ) ) 50 { 51 throw uno::RuntimeException( ::rtl::OUString::createFromAscii( "Can not initialize cipher!\n" ), 52 uno::Reference< XInterface >() ); 53 } 54 55 xResult->m_bEncrypt = bEncrypt; 56 57 return uno::Reference< xml::crypto::XCipherContext >( xResult.get() ); 58 } 59 60 BlowfishCFB8CipherContext::~BlowfishCFB8CipherContext() 61 { 62 if ( m_pCipher ) 63 { 64 rtl_cipher_destroy ( m_pCipher ); 65 m_pCipher = NULL; 66 } 67 } 68 69 uno::Sequence< sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::convertWithCipherContext( const uno::Sequence< ::sal_Int8 >& aData ) 70 throw( lang::IllegalArgumentException, lang::DisposedException, uno::RuntimeException ) 71 { 72 ::osl::MutexGuard aGuard( m_aMutex ); 73 if ( !m_pCipher ) 74 throw lang::DisposedException(); 75 76 uno::Sequence< sal_Int8 > aResult( aData.getLength() ); 77 rtlCipherError nError = rtl_Cipher_E_None; 78 79 if ( m_bEncrypt ) 80 { 81 rtl_cipher_encode( m_pCipher, 82 aData.getConstArray(), 83 aData.getLength(), 84 reinterpret_cast< sal_uInt8* >( aResult.getArray() ), 85 aResult.getLength() ); 86 } 87 else 88 { 89 rtl_cipher_decode( m_pCipher, 90 aData.getConstArray(), 91 aData.getLength(), 92 reinterpret_cast< sal_uInt8* >( aResult.getArray() ), 93 aResult.getLength() ); 94 } 95 96 if ( rtl_Cipher_E_None != nError ) 97 { 98 throw uno::RuntimeException( ::rtl::OUString::createFromAscii( "Can not decrypt/encrypt with cipher!\n" ), 99 uno::Reference< uno::XInterface >() ); 100 } 101 102 return aResult; 103 } 104 105 uno::Sequence< ::sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::finalizeCipherContextAndDispose() 106 throw( lang::DisposedException, uno::RuntimeException ) 107 { 108 ::osl::MutexGuard aGuard( m_aMutex ); 109 if ( !m_pCipher ) 110 throw lang::DisposedException(); 111 112 rtl_cipher_destroy ( m_pCipher ); 113 m_pCipher = NULL; 114 115 return uno::Sequence< sal_Int8 >(); 116 } 117 118 119