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Crypto++是一个非常强大的密码学库,主要是功能全

          <td class="md" nowrap valign="top"> void <a class="el" href="class_message_authentication_code_final_template.html">MessageAuthenticationCodeFinalTemplate</a>&lt; HMAC_Base , <a class="el" href="class_h_m_a_c.html">HMAC</a>&lt; T &gt;  &gt;::SetKey </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const byte *&nbsp;</td>
          <td class="mdname" nowrap> <em>key</em>, </td>
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          <td class="md" nowrap>unsigned int&nbsp;</td>
          <td class="mdname" nowrap> <em>length</em>, </td>
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          <td class="md" nowrap>const <a class="el" href="class_name_value_pairs.html">NameValuePairs</a> &amp;&nbsp;</td>
          <td class="mdname" nowrap> <em>param</em> = <a class="el" href="cryptlib_8h.html#a3">g_nullNameValuePairs</a></td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [inline, virtual, inherited]</code></td>
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set or reset the key of this object 
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<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign=top><em>params</em>&nbsp;</td><td>is used to specify Rounds, BlockSize, etc </td></tr>
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Implements <a class="el" href="class_simple_keying_interface.html#_x_m_a_c_c___basea26">SimpleKeyingInterface</a>.
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Definition at line <a class="el" href="seckey_8h-source.html#l00209">209</a> of file <a class="el" href="seckey_8h-source.html">seckey.h</a>.    </td>
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<a name="_x_m_a_c_c___basea13" doxytag="HMAC::Final"></a><p>
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          <td class="md" nowrap valign="top"> virtual void HashTransformation::Final </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">byte *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>digest</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [inline, virtual, inherited]</code></td>
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compute hash for current message, then restart for a new message 
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<dl compact><dt><b>Precondition:</b></dt><dd>size of digest == <a class="el" href="class_hash_transformation.html#_x_m_a_c_ca9">DigestSize()</a>. </dd></dl>

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Reimplemented in <a class="el" href="class_p_k_c_s___decorated_hash_module.html#_p_k_c_s___decorated_hash_modulea2">PKCS_DecoratedHashModule&lt; H &gt;</a>, <a class="el" href="class_signature_encoding_method_with_recovery.html#_signature_encoding_method_with_recoverya0">SignatureEncodingMethodWithRecovery</a>, and <a class="el" href="class_e_m_s_a2_decorated_hash_module.html#_e_m_s_a2_decorated_hash_modulea3">EMSA2DecoratedHashModule&lt; H &gt;</a>.
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Definition at line <a class="el" href="cryptlib_8h-source.html#l00526">526</a> of file <a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>.
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Referenced by <a class="el" href="filters_8cpp-source.html#l00635">HashFilter::Put2()</a>, <a class="el" href="pubkey_8h-source.html#l00439">PK_SignerBase&lt; H &gt;::SignAndRestart()</a>, and <a class="el" href="pubkey_8h-source.html#l00449">PK_VerifierBase&lt; H &gt;::VerifyAndRestart()</a>.    </td>
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<a name="_x_m_a_c_c___basea15" doxytag="HMAC::Verify"></a><p>
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          <td class="md" nowrap valign="top"> virtual bool HashTransformation::Verify </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const byte *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>digest</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [inline, virtual, inherited]</code></td>
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verify that digest is a valid digest for the current message, then reinitialize the object 
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Default implementation is to call <a class="el" href="class_hash_transformation.html#_x_m_a_c_c___basea13">Final()</a> and do a bitwise comparison between its output and digest. 
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Reimplemented in <a class="el" href="class_signature_encoding_method_with_recovery.html#_signature_encoding_method_with_recoverya2">SignatureEncodingMethodWithRecovery</a>.
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Definition at line <a class="el" href="cryptlib_8h-source.html#l00549">549</a> of file <a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>.
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Referenced by <a class="el" href="pubkey_8h-source.html#l00587">VerifierWithRecoveryTemplate&lt; TF, H &gt;::VerifyAndRestart()</a>.    </td>
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<a name="_x_m_a_c_c___basea30" doxytag="HMAC::IsResynchronizable"></a><p>
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          <td class="md" nowrap valign="top"> bool SimpleKeyingInterface::IsResynchronizable </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap> const<code> [inline, inherited]</code></td>
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returns whether this object can be resynchronized (i.e. supports initialization vectors) 
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If this function returns true, and no IV is passed to <a class="el" href="class_message_authentication_code_final_template.html#_message_authentication_code_final_templatea3">SetKey()</a> and <a class="el" href="class_simple_keying_interface.html#_x_m_a_c_c___basea33">CanUseStructuredIVs()</a>==true, an IV of all 0's will be assumed. 
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Definition at line <a class="el" href="cryptlib_8h-source.html#l00381">381</a> of file <a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>.    </td>
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<a name="_x_m_a_c_ca34" doxytag="HMAC::GetNextIV"></a><p>
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          <td class="md" nowrap valign="top"> virtual void SimpleKeyingInterface::GetNextIV </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">byte *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>IV</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [inline, virtual, inherited]</code></td>
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get a secure IV for the next message 
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This method should be called after you finish encrypting one message and are ready to start the next one. After calling it, you must call <a class="el" href="class_message_authentication_code_final_template.html#_message_authentication_code_final_templatea3">SetKey()</a> or <a class="el" href="class_simple_keying_interface.html#_x_m_a_c_ca33">Resynchronize()</a> before using this object again. This method is not implemented on decryption objects. 
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Definition at line <a class="el" href="cryptlib_8h-source.html#l00397">397</a> of file <a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>.    </td>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="hmac_8h-source.html">hmac.h</a></ul>
<hr size="1"><address style="align: right;"><small>Generated on Tue Jul 8 23:35:05 2003 for Crypto++ by
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