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27 
28 // MARKER(update_precomp.py): autogen include statement, do not remove
29 #include "precompiled_package.hxx"
30 
31 #include <rtl/cipher.h>
32 #include <rtl/ref.hxx>
33 
34 #include "blowfishcontext.hxx"
35 
36 using namespace ::com::sun::star;
37 
38 // static
39 uno::Reference< xml::crypto::XCipherContext > BlowfishCFB8CipherContext::Create( const uno::Sequence< sal_Int8 >& aDerivedKey, const uno::Sequence< sal_Int8 >& aInitVector, bool bEncrypt )
40 {
41     ::rtl::Reference< BlowfishCFB8CipherContext > xResult = new BlowfishCFB8CipherContext();
42     xResult->m_pCipher = rtl_cipher_create( rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeStream );
43     if ( !xResult->m_pCipher )
44         throw uno::RuntimeException( ::rtl::OUString::createFromAscii( "Can not create cipher!\n" ),
45                                      uno::Reference< XInterface >() );
46 
47     if ( rtl_Cipher_E_None != rtl_cipher_init(
48                                 xResult->m_pCipher,
49                                 bEncrypt ? rtl_Cipher_DirectionEncode : rtl_Cipher_DirectionDecode,
50                                 reinterpret_cast< const sal_uInt8* >( aDerivedKey.getConstArray() ),
51                                 aDerivedKey.getLength(),
52                                 reinterpret_cast< const sal_uInt8* >( aInitVector.getConstArray() ),
53                                 aInitVector.getLength() ) )
54     {
55         throw uno::RuntimeException( ::rtl::OUString::createFromAscii( "Can not initialize cipher!\n" ),
56                                      uno::Reference< XInterface >() );
57     }
58 
59     xResult->m_bEncrypt = bEncrypt;
60 
61     return uno::Reference< xml::crypto::XCipherContext >( xResult.get() );
62 }
63 
64 BlowfishCFB8CipherContext::~BlowfishCFB8CipherContext()
65 {
66     if ( m_pCipher )
67     {
68 		rtl_cipher_destroy ( m_pCipher );
69         m_pCipher = NULL;
70     }
71 }
72 
73 uno::Sequence< sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::convertWithCipherContext( const uno::Sequence< ::sal_Int8 >& aData )
74     throw( lang::IllegalArgumentException, lang::DisposedException, uno::RuntimeException )
75 {
76     ::osl::MutexGuard aGuard( m_aMutex );
77     if ( !m_pCipher )
78         throw lang::DisposedException();
79 
80     uno::Sequence< sal_Int8 > aResult( aData.getLength() );
81     rtlCipherError nError = rtl_Cipher_E_None;
82 
83     if ( m_bEncrypt )
84     {
85         rtl_cipher_encode( m_pCipher,
86                           aData.getConstArray(),
87                           aData.getLength(),
88                           reinterpret_cast< sal_uInt8* >( aResult.getArray() ),
89                           aResult.getLength() );
90     }
91     else
92     {
93         rtl_cipher_decode( m_pCipher,
94                           aData.getConstArray(),
95                           aData.getLength(),
96                           reinterpret_cast< sal_uInt8* >( aResult.getArray() ),
97                           aResult.getLength() );
98     }
99 
100     if ( rtl_Cipher_E_None != nError )
101     {
102         throw uno::RuntimeException( ::rtl::OUString::createFromAscii( "Can not decrypt/encrypt with cipher!\n" ),
103                                      uno::Reference< uno::XInterface >() );
104     }
105 
106     return aResult;
107 }
108 
109 uno::Sequence< ::sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::finalizeCipherContextAndDispose()
110     throw( lang::DisposedException, uno::RuntimeException )
111 {
112     ::osl::MutexGuard aGuard( m_aMutex );
113     if ( !m_pCipher )
114         throw lang::DisposedException();
115 
116     rtl_cipher_destroy ( m_pCipher );
117     m_pCipher = NULL;
118 
119     return uno::Sequence< sal_Int8 >();
120 }
121 
122 
123