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<h1>emsa2.h</h1><a href="emsa2_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef CRYPTOPP_EMSA2_H</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_EMSA2_H</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00004"></a>00004 <span class="comment">/** \file</span>
<a name="l00005"></a>00005 <span class="comment"> This file contains various padding schemes for public key algorithms.</span>
<a name="l00006"></a>00006 <span class="comment">*/</span>
<a name="l00007"></a>00007
<a name="l00008"></a>00008 <span class="preprocessor">#include "<a class="code" href="cryptlib_8h.html">cryptlib.h</a>"</span>
<a name="l00009"></a>00009 <span class="preprocessor">#include "<a class="code" href="pubkey_8h.html" title="This file contains helper classes/functions for implementing public key algorithms...">pubkey.h</a>"</span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="preprocessor">#ifdef CRYPTOPP_IS_DLL</span>
<a name="l00012"></a>00012 <span class="preprocessor"></span><span class="preprocessor">#include "sha.h"</span>
<a name="l00013"></a>00013 <span class="preprocessor">#endif</span>
<a name="l00014"></a>00014 <span class="preprocessor"></span>
<a name="l00015"></a>00015 NAMESPACE_BEGIN(CryptoPP)
<a name="l00016"></a>00016
<a name="l00017"></a><a class="code" href="class_e_m_s_a2_hash_id.html">00017</a> template <class H> class <a class="code" href="class_e_m_s_a2_hash_id.html">EMSA2HashId</a>
<a name="l00018"></a>00018 {
<a name="l00019"></a>00019 <span class="keyword">public</span>:
<a name="l00020"></a>00020 <span class="keyword">static</span> <span class="keyword">const</span> byte id;
<a name="l00021"></a>00021 };
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="keyword">template</span> <<span class="keyword">class</span> BASE>
<a name="l00024"></a><a class="code" href="class_e_m_s_a2_hash_id_lookup.html">00024</a> <span class="keyword">class </span><a class="code" href="class_e_m_s_a2_hash_id_lookup.html">EMSA2HashIdLookup</a> : <span class="keyword">public</span> <a class="code" href="class_b_a_s_e.html">BASE</a>
<a name="l00025"></a>00025 {
<a name="l00026"></a>00026 <span class="keyword">public</span>:
<a name="l00027"></a><a class="code" href="struct_e_m_s_a2_hash_id_lookup_1_1_hash_identifier_lookup.html">00027</a> <span class="keyword">struct </span><a class="code" href="struct_e_m_s_a2_hash_id_lookup_1_1_hash_identifier_lookup.html">HashIdentifierLookup</a>
<a name="l00028"></a>00028 {
<a name="l00029"></a><a class="code" href="struct_e_m_s_a2_hash_id_lookup_1_1_hash_identifier_lookup_1_1_hash_identifier_lookup2.html">00029</a> <span class="keyword">template</span> <<span class="keyword">class</span> H> <span class="keyword">struct </span><a class="code" href="struct_e_m_s_a2_hash_id_lookup_1_1_hash_identifier_lookup_1_1_hash_identifier_lookup2.html">HashIdentifierLookup2</a>
<a name="l00030"></a>00030 {
<a name="l00031"></a>00031 <span class="keyword">static</span> HashIdentifier Lookup()
<a name="l00032"></a>00032 {
<a name="l00033"></a>00033 <span class="keywordflow">return</span> HashIdentifier(&<a class="code" href="class_e_m_s_a2_hash_id.html">EMSA2HashId<H>::id</a>, 1);
<a name="l00034"></a>00034 }
<a name="l00035"></a>00035 };
<a name="l00036"></a>00036 };
<a name="l00037"></a>00037 };
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="comment">// EMSA2HashId can be instantiated with the following classes.</span>
<a name="l00040"></a>00040 <span class="keyword">class </span><a class="code" href="class_s_h_a1.html" title="SHA-1">SHA1</a>;
<a name="l00041"></a>00041 <span class="keyword">class </span><a class="code" href="class_r_i_p_e_m_d160.html" title="RIPEMD-160">RIPEMD160</a>;
<a name="l00042"></a>00042 <span class="keyword">class </span><a class="code" href="class_r_i_p_e_m_d128.html">RIPEMD128</a>;
<a name="l00043"></a>00043 <span class="keyword">class </span><a class="code" href="class_s_h_a256.html" title="implements the SHA-256 standard">SHA256</a>;
<a name="l00044"></a>00044 <span class="keyword">class </span><a class="code" href="class_s_h_a384.html" title="implements the SHA-384 standard">SHA384</a>;
<a name="l00045"></a>00045 <span class="keyword">class </span><a class="code" href="class_s_h_a512.html" title="implements the SHA-512 standard">SHA512</a>;
<a name="l00046"></a>00046 <span class="keyword">class </span><a class="code" href="class_whirlpool.html" title="Whirlpool">Whirlpool</a>;
<a name="l00047"></a>00047 <span class="keyword">class </span><a class="code" href="class_s_h_a224.html" title="implements the SHA-224 standard">SHA224</a>;
<a name="l00048"></a>00048 <span class="comment">// end of list</span>
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="preprocessor">#ifdef CRYPTOPP_IS_DLL</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span>CRYPTOPP_DLL_TEMPLATE_CLASS <a class="code" href="class_e_m_s_a2_hash_id.html">EMSA2HashId<SHA1></a>;
<a name="l00052"></a>00052 CRYPTOPP_DLL_TEMPLATE_CLASS <a class="code" href="class_e_m_s_a2_hash_id.html">EMSA2HashId<SHA224></a>;
<a name="l00053"></a>00053 CRYPTOPP_DLL_TEMPLATE_CLASS <a class="code" href="class_e_m_s_a2_hash_id.html">EMSA2HashId<SHA256></a>;
<a name="l00054"></a>00054 CRYPTOPP_DLL_TEMPLATE_CLASS <a class="code" href="class_e_m_s_a2_hash_id.html">EMSA2HashId<SHA384></a>;
<a name="l00055"></a>00055 CRYPTOPP_DLL_TEMPLATE_CLASS <a class="code" href="class_e_m_s_a2_hash_id.html">EMSA2HashId<SHA512></a>;
<a name="l00056"></a>00056 <span class="preprocessor">#endif</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00058"></a>00058 <span class="comment">//! _</span>
<a name="l00059"></a><a class="code" href="class_e_m_s_a2_pad.html">00059</a> <span class="comment"></span><span class="keyword">class </span>CRYPTOPP_DLL <a class="code" href="class_e_m_s_a2_pad.html" title="_">EMSA2Pad</a> : <span class="keyword">public</span> <a class="code" href="class_e_m_s_a2_hash_id_lookup.html">EMSA2HashIdLookup</a><PK_DeterministicSignatureMessageEncodingMethod>
<a name="l00060"></a>00060 {
<a name="l00061"></a>00061 <span class="keyword">public</span>:
<a name="l00062"></a>00062 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> * CRYPTOPP_API StaticAlgorithmName() {<span class="keywordflow">return</span> <span class="stringliteral">"EMSA2"</span>;}
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="keywordtype">size_t</span> MinRepresentativeBitLength(<span class="keywordtype">size_t</span> hashIdentifierLength, <span class="keywordtype">size_t</span> digestLength)<span class="keyword"> const</span>
<a name="l00065"></a>00065 <span class="keyword"> </span>{<span class="keywordflow">return</span> 8*digestLength + 31;}
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="keywordtype">void</span> ComputeMessageRepresentative(<a class="code" href="class_random_number_generator.html" title="interface for random number generators">RandomNumberGenerator</a> &rng,
<a name="l00068"></a>00068 <span class="keyword">const</span> byte *recoverableMessage, <span class="keywordtype">size_t</span> recoverableMessageLength,
<a name="l00069"></a>00069 <a class="code" href="class_hash_transformation.html" title="interface for hash functions and data processing part of MACs">HashTransformation</a> &hash, HashIdentifier hashIdentifier, <span class="keywordtype">bool</span> messageEmpty,
<a name="l00070"></a>00070 byte *representative, <span class="keywordtype">size_t</span> representativeBitLength) <span class="keyword">const</span>;
<a name="l00071"></a>00071 };
<a name="l00072"></a>00072 <span class="comment"></span>
<a name="l00073"></a>00073 <span class="comment">//! EMSA2, for use with RWSS and RSA_ISO</span>
<a name="l00074"></a>00074 <span class="comment"></span><span class="comment">/*! Only the following hash functions are supported by this signature standard:</span>
<a name="l00075"></a>00075 <span class="comment"> \dontinclude emsa2.h</span>
<a name="l00076"></a>00076 <span class="comment"> \skip EMSA2HashId can be instantiated</span>
<a name="l00077"></a>00077 <span class="comment"> \until end of list</span>
<a name="l00078"></a>00078 <span class="comment">*/</span>
<a name="l00079"></a><a class="code" href="struct_p1363___e_m_s_a2.html">00079</a> <span class="keyword">struct </span><a class="code" href="struct_p1363___e_m_s_a2.html" title="EMSA2, for use with RWSS and RSA_ISO.">P1363_EMSA2</a> : <span class="keyword">public</span> <a class="code" href="struct_signature_standard.html" title="Base class for public key signature standard classes. These classes are used to select...">SignatureStandard</a>
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 <span class="keyword">typedef</span> <a class="code" href="class_e_m_s_a2_pad.html" title="_">EMSA2Pad</a> <a class="code" href="class_e_m_s_a2_pad.html" title="_">SignatureMessageEncodingMethod</a>;
<a name="l00082"></a>00082 };
<a name="l00083"></a>00083
<a name="l00084"></a>00084 NAMESPACE_END
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="preprocessor">#endif</span>
</pre></div></div>
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