diff options
Diffstat (limited to 'src/experimental/ciphermodeofb.h')
-rw-r--r-- | src/experimental/ciphermodeofb.h | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/src/experimental/ciphermodeofb.h b/src/experimental/ciphermodeofb.h deleted file mode 100644 index e1b5108..0000000 --- a/src/experimental/ciphermodeofb.h +++ /dev/null | |||
@@ -1,56 +0,0 @@ | |||
1 | #ifndef BU_MODE_OFB_H | ||
2 | #define BU_MODE_OFB_H | ||
3 | |||
4 | #include "bu/filter.h" | ||
5 | #include "bu/string.h" | ||
6 | |||
7 | namespace Bu | ||
8 | { | ||
9 | template<int iBlockSize, typename CipherType> | ||
10 | class CipherModeOfb : public CipherType | ||
11 | { | ||
12 | public: | ||
13 | CipherModeOfb(class Stream &rNext ) : | ||
14 | CipherType( rNext ), | ||
15 | bStart( true ) | ||
16 | { | ||
17 | memset( aVector, 0, iBlockSize ); | ||
18 | } | ||
19 | |||
20 | virtual ~CipherModeOfb() | ||
21 | { | ||
22 | } | ||
23 | |||
24 | void setIv( const Bu::String &sIv ) | ||
25 | { | ||
26 | memcpy( aVector, sIv.getStr(), iBlockSize ); | ||
27 | } | ||
28 | |||
29 | protected: | ||
30 | void decipher( void *pBuf ) | ||
31 | { | ||
32 | CipherType::encipher( aVector ); | ||
33 | uint8_t aTmp[iBlockSize]; | ||
34 | memcpy( aTmp, aVector, iBlockSize ); | ||
35 | for( int j = 0; j < iBlockSize; j++ ) | ||
36 | ((uint8_t *)pBuf)[j] ^= aVector[j]; | ||
37 | memcpy( aVector, aTmp, iBlockSize ); | ||
38 | } | ||
39 | |||
40 | void encipher( void *pBuf ) | ||
41 | { | ||
42 | CipherType::encipher( aVector ); | ||
43 | uint8_t aTmp[iBlockSize]; | ||
44 | memcpy( aTmp, aVector, iBlockSize ); | ||
45 | for( int j = 0; j < iBlockSize; j++ ) | ||
46 | ((uint8_t *)pBuf)[j] ^= aVector[j]; | ||
47 | memcpy( aVector, aTmp, iBlockSize ); | ||
48 | } | ||
49 | |||
50 | private: | ||
51 | bool bStart; | ||
52 | uint8_t aVector[iBlockSize]; | ||
53 | }; | ||
54 | }; | ||
55 | |||
56 | #endif | ||