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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef CRYPTOPP_ITERHASH_H</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_ITERHASH_H</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span>
<a name="l00004"></a>00004 <span class="preprocessor">#include "<a class="code" href="cryptlib_8h.html">cryptlib.h</a>"</span>
<a name="l00005"></a>00005 <span class="preprocessor">#include "secblock.h"</span>
<a name="l00006"></a>00006 <span class="preprocessor">#include "misc.h"</span>
<a name="l00007"></a>00007 <span class="preprocessor">#include "<a class="code" href="simple_8h.html">simple.h</a>"</span>
<a name="l00008"></a>00008
<a name="l00009"></a>00009 NAMESPACE_BEGIN(CryptoPP)
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="comment">//! exception thrown when trying to hash more data than is allowed by a hash function</span>
<a name="l00012"></a><a class="code" href="class_hash_input_too_long.html">00012</a> <span class="comment"></span>class CRYPTOPP_DLL <a class="code" href="class_hash_input_too_long.html" title="exception thrown when trying to hash more data than is allowed by a hash function">HashInputTooLong</a> : public <a class="code" href="class_invalid_data_format.html" title="exception thrown when input data is received that doesn't conform to expected format">InvalidDataFormat</a>
<a name="l00013"></a>00013 {
<a name="l00014"></a>00014 <span class="keyword">public</span>:
<a name="l00015"></a>00015 <span class="keyword">explicit</span> <a class="code" href="class_hash_input_too_long.html" title="exception thrown when trying to hash more data than is allowed by a hash function">HashInputTooLong</a>(<span class="keyword">const</span> std::string &alg)
<a name="l00016"></a>00016 : InvalidDataFormat(<span class="stringliteral">"IteratedHashBase: input data exceeds maximum allowed by hash function "</span> + alg) {}
<a name="l00017"></a>00017 };
<a name="l00018"></a>00018 <span class="comment"></span>
<a name="l00019"></a>00019 <span class="comment">//! _</span>
<a name="l00020"></a>00020 <span class="comment"></span><span class="keyword">template</span> <<span class="keyword">class</span> T, <span class="keyword">class</span> BASE>
<a name="l00021"></a><a class="code" href="class_iterated_hash_base.html">00021</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_iterated_hash_base.html" title="_">IteratedHashBase</a> : <span class="keyword">public</span> <a class="code" href="class_b_a_s_e.html">BASE</a>
<a name="l00022"></a>00022 {
<a name="l00023"></a>00023 <span class="keyword">public</span>:
<a name="l00024"></a>00024 <span class="keyword">typedef</span> T HashWordType;
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <a class="code" href="class_iterated_hash_base.html" title="_">IteratedHashBase</a>() : m_countLo(0), m_countHi(0) {}
<a name="l00027"></a>00027 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> OptimalBlockSize()<span class="keyword"> const </span>{<span class="keywordflow">return</span> this->BlockSize();}
<a name="l00028"></a>00028 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> OptimalDataAlignment()<span class="keyword"> const </span>{<span class="keywordflow">return</span> GetAlignmentOf<T>();}
<a name="l00029"></a>00029 <span class="keywordtype">void</span> Update(<span class="keyword">const</span> byte *input, <span class="keywordtype">size_t</span> length);
<a name="l00030"></a>00030 byte * CreateUpdateSpace(<span class="keywordtype">size_t</span> &size);
<a name="l00031"></a>00031 <span class="keywordtype">void</span> Restart();
<a name="l00032"></a>00032 <span class="keywordtype">void</span> TruncatedFinal(byte *digest, <span class="keywordtype">size_t</span> size);
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="keyword">protected</span>:
<a name="l00035"></a>00035 <span class="keyword">inline</span> T GetBitCountHi()<span class="keyword"> const </span>{<span class="keywordflow">return</span> (m_countLo >> (8*<span class="keyword">sizeof</span>(T)-3)) + (m_countHi << 3);}
<a name="l00036"></a>00036 <span class="keyword">inline</span> T GetBitCountLo()<span class="keyword"> const </span>{<span class="keywordflow">return</span> m_countLo << 3;}
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="keywordtype">void</span> PadLastBlock(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> lastBlockSize, byte padFirst=0x80);
<a name="l00039"></a>00039 <span class="keyword">virtual</span> <span class="keywordtype">void</span> Init() =0;
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="keyword">virtual</span> ByteOrder GetByteOrder() <span class="keyword">const</span> =0;
<a name="l00042"></a>00042 <span class="keyword">virtual</span> <span class="keywordtype">void</span> HashEndianCorrectedBlock(<span class="keyword">const</span> HashWordType *data) =0;
<a name="l00043"></a>00043 <span class="keyword">virtual</span> <span class="keywordtype">size_t</span> HashMultipleBlocks(<span class="keyword">const</span> T *input, <span class="keywordtype">size_t</span> length);
<a name="l00044"></a>00044 <span class="keywordtype">void</span> HashBlock(<span class="keyword">const</span> HashWordType *input) {HashMultipleBlocks(input, this->BlockSize());}
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="keyword">virtual</span> T* DataBuf() =0;
<a name="l00047"></a>00047 <span class="keyword">virtual</span> T* StateBuf() =0;
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="keyword">private</span>:
<a name="l00050"></a>00050 T m_countLo, m_countHi;
<a name="l00051"></a>00051 };
<a name="l00052"></a>00052 <span class="comment"></span>
<a name="l00053"></a>00053 <span class="comment">//! _</span>
<a name="l00054"></a>00054 <span class="comment"></span><span class="keyword">template</span> <<span class="keyword">class</span> T_HashWordType, <span class="keyword">class</span> T_Endianness, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> T_BlockSize, <span class="keyword">class</span> T_Base = HashTransformation>
<a name="l00055"></a><a class="code" href="class_iterated_hash.html">00055</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_iterated_hash.html" title="_">IteratedHash</a> : <span class="keyword">public</span> <a class="code" href="class_iterated_hash_base.html" title="_">IteratedHashBase</a><T_HashWordType, T_Base>
<a name="l00056"></a>00056 {
<a name="l00057"></a>00057 <span class="keyword">public</span>:
<a name="l00058"></a>00058 <span class="keyword">typedef</span> T_Endianness ByteOrderClass;
<a name="l00059"></a>00059 <span class="keyword">typedef</span> T_HashWordType HashWordType;
<a name="l00060"></a>00060
<a name="l00061"></a>00061 CRYPTOPP_CONSTANT(BLOCKSIZE = T_BlockSize)
<a name="l00062"></a>00062 <span class="comment">// BCB2006 workaround: can't use BLOCKSIZE here</span>
<a name="l00063"></a>00063 CRYPTOPP_COMPILE_ASSERT((T_BlockSize & (T_BlockSize - 1)) == 0); <span class="comment">// blockSize is a power of 2</span>
<a name="l00064"></a>00064 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> BlockSize()<span class="keyword"> const </span>{<span class="keywordflow">return</span> T_BlockSize;}
<a name="l00065"></a>00065
<a name="l00066"></a>00066 ByteOrder GetByteOrder()<span class="keyword"> const </span>{<span class="keywordflow">return</span> T_Endianness::ToEnum();}
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keyword">inline</span> <span class="keyword">static</span> <span class="keywordtype">void</span> CorrectEndianess(HashWordType *out, <span class="keyword">const</span> HashWordType *in, <span class="keywordtype">size_t</span> byteCount)
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 ConditionalByteReverse(T_Endianness::ToEnum(), out, in, byteCount);
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keyword">protected</span>:
<a name="l00074"></a>00074 T_HashWordType* DataBuf() {<span class="keywordflow">return</span> this->m_data;}
<a name="l00075"></a>00075 <a class="code" href="class_fixed_size_sec_block.html" title="a SecBlock with fixed size, allocated statically">FixedSizeSecBlock</a><T_HashWordType, T_BlockSize/<span class="keyword">sizeof</span>(T_HashWordType)> m_data;
<a name="l00076"></a>00076 };
<a name="l00077"></a>00077 <span class="comment"></span>
<a name="l00078"></a>00078 <span class="comment">//! _</span>
<a name="l00079"></a>00079 <span class="comment"></span><span class="keyword">template</span> <<span class="keyword">class</span> T_HashWordType, <span class="keyword">class</span> T_Endianness, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> T_BlockSize, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> T_StateSize, <span class="keyword">class</span> T_Transform, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> T_DigestSize = 0, <span class="keywordtype">bool</span> T_StateAligned = false>
<a name="l00080"></a><a class="code" href="class_iterated_hash_with_static_transform.html">00080</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_iterated_hash_with_static_transform.html" title="_">IteratedHashWithStaticTransform</a>
<a name="l00081"></a>00081 : <span class="keyword">public</span> <a class="code" href="class_clonable_impl.html" title="_">ClonableImpl</a><T_Transform, AlgorithmImpl<IteratedHash<T_HashWordType, T_Endianness, T_BlockSize>, T_Transform> >
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083 <span class="keyword">public</span>:
<a name="l00084"></a>00084 CRYPTOPP_CONSTANT(DIGESTSIZE = T_DigestSize ? T_DigestSize : T_StateSize)
<a name="l00085"></a><a class="code" href="class_iterated_hash_with_static_transform.html#a176f8dcb7ea9818cd54e8f6df8bca50a">00085</a> unsigned <span class="keywordtype">int</span> DigestSize()<span class="keyword"> const </span>{<span class="keywordflow">return</span> DIGESTSIZE;};
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="keyword">protected</span>:
<a name="l00088"></a>00088 <a class="code" href="class_iterated_hash_with_static_transform.html" title="_">IteratedHashWithStaticTransform</a>() {this->Init();}
<a name="l00089"></a>00089 <span class="keywordtype">void</span> HashEndianCorrectedBlock(<span class="keyword">const</span> T_HashWordType *data) {T_Transform::Transform(this->m_state, data);}
<a name="l00090"></a>00090 <span class="keywordtype">void</span> Init() {T_Transform::InitState(this->m_state);}
<a name="l00091"></a>00091
<a name="l00092"></a>00092 T_HashWordType* StateBuf() {<span class="keywordflow">return</span> this->m_state;}
<a name="l00093"></a>00093 <a class="code" href="class_fixed_size_aligned_sec_block.html">FixedSizeAlignedSecBlock</a><T_HashWordType, T_BlockSize/<span class="keyword">sizeof</span>(T_HashWordType), T_StateAligned> m_state;
<a name="l00094"></a>00094 };
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="preprocessor">#ifndef __GNUC__</span>
<a name="l00097"></a>00097 <span class="preprocessor"></span> CRYPTOPP_DLL_TEMPLATE_CLASS <a class="code" href="class_iterated_hash_base.html">IteratedHashBase<word64, HashTransformation></a>;
<a name="l00098"></a>00098 CRYPTOPP_STATIC_TEMPLATE_CLASS <a class="code" href="class_iterated_hash_base.html">IteratedHashBase<word64, MessageAuthenticationCode></a>;
<a name="l00099"></a>00099
<a name="l00100"></a>00100 CRYPTOPP_DLL_TEMPLATE_CLASS <a class="code" href="class_iterated_hash_base.html">IteratedHashBase<word32, HashTransformation></a>;
<a name="l00101"></a>00101 CRYPTOPP_STATIC_TEMPLATE_CLASS <a class="code" href="class_iterated_hash_base.html">IteratedHashBase<word32, MessageAuthenticationCode></a>;
<a name="l00102"></a>00102 <span class="preprocessor">#endif</span>
<a name="l00103"></a>00103 <span class="preprocessor"></span>
<a name="l00104"></a>00104 NAMESPACE_END
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="preprocessor">#endif</span>
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