class_p_k___fixed_length_encryptor.html

Crypto++是一个非常强大的密码学库,主要是功能全

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create a new encryption filter 
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<dl compact><dt><b>Note:</b></dt><dd>caller is responsible for deleting the returned pointer</dd></dl>

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Definition at line <a class="el" href="cryptlib_8cpp-source.html#l00508">508</a> of file <a class="el" href="cryptlib_8cpp-source.html">cryptlib.cpp</a>.    </td>
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<a name="_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a13" doxytag="PK_FixedLengthEncryptor::MaxPlaintextLength"></a><p>
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          <td class="md" nowrap valign="top"> virtual unsigned int PK_CryptoSystem::MaxPlaintextLength </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned int&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>cipherTextLength</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap> const<code> [pure virtual, inherited]</code></td>
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maximum length of plaintext for a given ciphertext length 
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<dl compact><dt><b>Note:</b></dt><dd>This function returns 0 if cipherTextLength is not valid (too long or too short). </dd></dl>

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Implemented in <a class="el" href="class_p_k___fixed_length_crypto_system.html#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a14">PK_FixedLengthCryptoSystem</a>.    </td>
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<a name="_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a15" doxytag="PK_FixedLengthEncryptor::CiphertextLength"></a><p>
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          <td class="md" nowrap valign="top"> virtual unsigned int PK_CryptoSystem::CiphertextLength </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned int&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>plainTextLength</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap> const<code> [pure virtual, inherited]</code></td>
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calculate length of ciphertext given length of plaintext 
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<dl compact><dt><b>Note:</b></dt><dd>This function returns 0 if plainTextLength is not valid (too long). </dd></dl>

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Implemented in <a class="el" href="class_p_k___fixed_length_crypto_system.html#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a16">PK_FixedLengthCryptoSystem</a>.    </td>
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<a name="_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a14" doxytag="PK_FixedLengthEncryptor::MaxPlaintextLength"></a><p>
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          <td class="md" nowrap valign="top"> unsigned int PK_FixedLengthCryptoSystem::MaxPlaintextLength </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned int&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>cipherTextLength</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap> const<code> [virtual, inherited]</code></td>
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maximum length of plaintext for a given ciphertext length 
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<dl compact><dt><b>Note:</b></dt><dd>This function returns 0 if cipherTextLength is not valid (too long or too short). </dd></dl>

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Implements <a class="el" href="class_p_k___crypto_system.html#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a13">PK_CryptoSystem</a>.
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Definition at line <a class="el" href="cryptlib_8cpp-source.html#l00595">595</a> of file <a class="el" href="cryptlib_8cpp-source.html">cryptlib.cpp</a>.    </td>
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<a name="_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a16" doxytag="PK_FixedLengthEncryptor::CiphertextLength"></a><p>
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          <td class="md" nowrap valign="top"> unsigned int PK_FixedLengthCryptoSystem::CiphertextLength </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned int&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>plainTextLength</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap> const<code> [virtual, inherited]</code></td>
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calculate length of ciphertext given length of plaintext 
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<dl compact><dt><b>Note:</b></dt><dd>This function returns 0 if plainTextLength is not valid (too long). </dd></dl>

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Implements <a class="el" href="class_p_k___crypto_system.html#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a15">PK_CryptoSystem</a>.
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Definition at line <a class="el" href="cryptlib_8cpp-source.html#l00603">603</a> of file <a class="el" href="cryptlib_8cpp-source.html">cryptlib.cpp</a>.    </td>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="cryptlib_8h-source.html">cryptlib.h</a></ul>
<hr size="1"><address style="align: right;"><small>Generated on Tue Jul 8 23:35:20 2003 for Crypto++ by
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