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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><title>Crypto++: CBC_MAC< T > Class Template Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.5.2 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li class="current"><a href="classes.html"><span>Classes</span></a></li> <li><a href="files.html"><span>Files</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="classes.html"><span>Alphabetical List</span></a></li> <li><a href="annotated.html"><span>Class List</span></a></li> <li><a href="hierarchy.html"><span>Class Hierarchy</span></a></li> <li><a href="functions.html"><span>Class Members</span></a></li> </ul></div><h1>CBC_MAC< T > Class Template Reference</h1><!-- doxytag: class="CBC_MAC" --><!-- doxytag: inherits="MessageAuthenticationCodeImpl< CBC_MAC_Base, CBC_MAC< T > >,SameKeyLengthAs< T >" --><code>#include <<a class="el" href="cbcmac_8h-source.html">cbcmac.h</a>></code><p><p>Inheritance diagram for CBC_MAC< T >:<p><center><img src="class_c_b_c___m_a_c.png" usemap="#CBC_MAC< T >_map" border="0" alt=""></center><map name="CBC_MAC< T >_map"><area href="class_message_authentication_code_impl.html" alt="MessageAuthenticationCodeImpl< CBC_MAC_Base, CBC_MAC< T > >" shape="rect" coords="297,392,881,416"><area href="class_same_key_length_as.html" alt="SameKeyLengthAs< T >" shape="rect" coords="891,392,1475,416"><area href="class_algorithm_impl.html" alt="AlgorithmImpl< SimpleKeyingInterfaceImpl< CBC_MAC_Base, CBC_MAC< T > >, CBC_MAC< T > >" shape="rect" coords="297,336,881,360"><area href="class_simple_keying_interface_impl.html" alt="SimpleKeyingInterfaceImpl< CBC_MAC_Base, CBC_MAC< T > >" shape="rect" coords="297,280,881,304"><area href="class_c_b_c___m_a_c___base.html" alt="CBC_MAC_Base" shape="rect" coords="297,224,881,248"><area href="class_message_authentication_code.html" alt="MessageAuthenticationCode" shape="rect" coords="297,168,881,192"><area href="class_hash_transformation.html" alt="HashTransformation" shape="rect" coords="0,112,584,136"><area href="class_simple_keying_interface.html" alt="SimpleKeyingInterface" shape="rect" coords="594,112,1178,136"><area href="class_algorithm.html" alt="Algorithm" shape="rect" coords="0,56,584,80"><area href="class_clonable.html" alt="Clonable" shape="rect" coords="0,0,584,24"></map><a href="class_c_b_c___m_a_c-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2><h3>template<class T><br> class CBC_MAC< T ></h3><a href="http://www.weidai.com/scan-mirror/mac.html#CBC-MAC">CBC-MAC</a> <p>Compatible with FIPS 113. T should be a class derived from <a class="el" href="struct_block_cipher_documentation.html" title="These objects usually should not be used directly. See CipherModeDocumentation instead...">BlockCipherDocumentation</a>. Secure only for fixed length messages. For variable length messages use <a class="el" href="class_d_m_a_c.html" title="DMAC.">DMAC</a>. <p><p>Definition at line <a class="el" href="cbcmac_8h-source.html#l00035">35</a> of file <a class="el" href="cbcmac_8h-source.html">cbcmac.h</a>.<table border="0" cellpadding="0" cellspacing="0"><tr><td></td></tr><tr><td colspan="2"><br><h2>Public Types</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">enum </td><td class="memItemRight" valign="bottom"><a class="el" href="class_simple_keying_interface.html#88201c180fbfaa9fef2715252546ad6e">IV_Requirement</a> { <br> <a class="el" href="class_simple_keying_interface.html#88201c180fbfaa9fef2715252546ad6e1cc32e69fe4f385e54d9d482a2ab5a56">UNIQUE_IV</a> = 0, <a class="el" href="class_simple_keying_interface.html#88201c180fbfaa9fef2715252546ad6e4520c4379ee3a1aed95a36e2235ba338">RANDOM_IV</a>, <a class="el" href="class_simple_keying_interface.html#88201c180fbfaa9fef2715252546ad6eceff3ad4b12bcb6d7b61a5bd543a815c">UNPREDICTABLE_RANDOM_IV</a>, <a class="el" href="class_simple_keying_interface.html#88201c180fbfaa9fef2715252546ad6eb659bf6d2c470c50c14bfbab5b2d45ab">INTERNALLY_GENERATED_IV</a>, <br> <a class="el" href="class_simple_keying_interface.html#88201c180fbfaa9fef2715252546ad6ec1d24de3dedd05c28516f452d3ace417">NOT_RESYNCHRONIZABLE</a><br> }</td></tr><tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b7b7366b58036a0af717b9bcd48dd10b"></a><!-- doxytag: member="CBC_MAC::CBC_MAC" ref="b7b7366b58036a0af717b9bcd48dd10b" args="()" --> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_b_c___m_a_c.html#b7b7366b58036a0af717b9bcd48dd10b">CBC_MAC</a> ()</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f6b2e38e87f5146cbd5ec54c3d4f6352"></a><!-- doxytag: member="CBC_MAC::CBC_MAC" ref="f6b2e38e87f5146cbd5ec54c3d4f6352" args="(const byte *key, size_t length=SameKeyLengthAs< T >::DEFAULT_KEYLENGTH)" --> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_b_c___m_a_c.html#f6b2e38e87f5146cbd5ec54c3d4f6352">CBC_MAC</a> (const byte *key, size_t length=<a class="el" href="class_same_key_length_as.html">SameKeyLengthAs</a>< T >::<a class="el" href="class_same_key_length_as.html#2178ba0a86c81fa36ab235c748062b2e">DEFAULT_KEYLENGTH</a>)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="bd1b02bf6cda820fa6cc56ea5a9eac20"></a><!-- doxytag: member="CBC_MAC::AlgorithmName" ref="bd1b02bf6cda820fa6cc56ea5a9eac20" args="() const" -->std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="class_algorithm_impl.html#bd1b02bf6cda820fa6cc56ea5a9eac20">AlgorithmName</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns name of this algorithm, not universally implemented yet <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f3e42c83041a26ffaef5e378e352caa0"></a><!-- doxytag: member="CBC_MAC::MinKeyLength" ref="f3e42c83041a26ffaef5e378e352caa0" args="() const" -->size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_simple_keying_interface_impl.html#f3e42c83041a26ffaef5e378e352caa0">MinKeyLength</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns smallest valid key length in bytes */ <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="c72a5a82d8a5d9e19e18f7e146b35df4"></a><!-- doxytag: member="CBC_MAC::MaxKeyLength" ref="c72a5a82d8a5d9e19e18f7e146b35df4" args="() const" -->size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_simple_keying_interface_impl.html#c72a5a82d8a5d9e19e18f7e146b35df4">MaxKeyLength</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns largest valid key length in bytes */ <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="017e0545328286b51892a93f95aabf8e"></a><!-- doxytag: member="CBC_MAC::DefaultKeyLength" ref="017e0545328286b51892a93f95aabf8e" args="() const" -->size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_simple_keying_interface_impl.html#017e0545328286b51892a93f95aabf8e">DefaultKeyLength</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns default (recommended) key length in bytes */ <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b0d253f0866af8431fcafdfc9d32e888"></a><!-- doxytag: member="CBC_MAC::GetValidKeyLength" ref="b0d253f0866af8431fcafdfc9d32e888" args="(size_t n) const" -->size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_simple_keying_interface_impl.html#b0d253f0866af8431fcafdfc9d32e888">GetValidKeyLength</a> (size_t n) const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns the smallest valid key length in bytes that is >= min(n, GetMaxKeyLength()) <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f9e6ac5f39488b6a3f8220c539c6cfeb"></a><!-- doxytag: member="CBC_MAC::IVRequirement" ref="f9e6ac5f39488b6a3f8220c539c6cfeb" args="() const" --><a class="el" href="class_simple_keying_interface.html#88201c180fbfaa9fef2715252546ad6e">SimpleKeyingInterface::IV_Requirement</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_simple_keying_interface_impl.html#f9e6ac5f39488b6a3f8220c539c6cfeb">IVRequirement</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns the minimal requirement for secure IVs <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="cba54a012806e2b2d0f61c1aa64a3a25"></a><!-- doxytag: member="CBC_MAC::IVSize" ref="cba54a012806e2b2d0f61c1aa64a3a25" args="() const" -->unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_simple_keying_interface_impl.html#cba54a012806e2b2d0f61c1aa64a3a25">IVSize</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns size of IVs used by this object <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e20a7dda2bc350e34de851dee4ff81ea"></a><!-- doxytag: member="CBC_MAC::UncheckedSetKey" ref="e20a7dda2bc350e34de851dee4ff81ea" args="(const byte *key, unsigned int length, const NameValuePairs &params)" -->void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_b_c___m_a_c___base.html#e20a7dda2bc350e34de851dee4ff81ea">UncheckedSetKey</a> (const byte *key, unsigned int length, const <a class="el" href="class_name_value_pairs.html">NameValuePairs</a> &params)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f4b9ad28defd9ff98d86f0d6de2f4cf0"></a><!-- doxytag: member="CBC_MAC::Update" ref="f4b9ad28defd9ff98d86f0d6de2f4cf0" args="(const byte *input, size_t length)" -->void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_b_c___m_a_c___base.html#f4b9ad28defd9ff98d86f0d6de2f4cf0">Update</a> (const byte *input, size_t length)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">process more input <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="50c5a8fc6a2926485295bbe72bcfe4d8"></a><!-- doxytag: member="CBC_MAC::TruncatedFinal" ref="50c5a8fc6a2926485295bbe72bcfe4d8" args="(byte *mac, size_t size)" -->void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_b_c___m_a_c___base.html#50c5a8fc6a2926485295bbe72bcfe4d8">TruncatedFinal</a> (byte *mac, size_t size)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">truncated version of <a class="el" href="class_hash_transformation.html#a0b8c7a110d8968268fd02ec32b9a8e8" title="compute hash for current message, then restart for a new message">Final()</a> <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0fec943dfb5a946b490347da855cfc89"></a><!-- doxytag: member="CBC_MAC::DigestSize" ref="0fec943dfb5a946b490347da855cfc89" args="() const" -->unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_c_b_c___m_a_c___base.html#0fec943dfb5a946b490347da855cfc89">DigestSize</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">size of the hash returned by <a class="el" href="class_hash_transformation.html#a0b8c7a110d8968268fd02ec32b9a8e8" title="compute hash for current message, then restart for a new message">Final()</a> <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="class_hash_transformation.html">HashTransformation</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_hash_transformation.html#39b0a4c4cdc11fda358f9975b5e4137e">Ref</a> ()</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">return a reference to this object, <a href="#39b0a4c4cdc11fda358f9975b5e4137e"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="9fc0b332ef36900ca6ea5d949e95aba1"></a><!-- doxytag: member="CBC_MAC::CreateUpdateSpace" ref="9fc0b332ef36900ca6ea5d949e95aba1" args="(size_t &size)" -->virtual byte * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_hash_transformation.html#9fc0b332ef36900ca6ea5d949e95aba1">CreateUpdateSpace</a> (size_t &size)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">request space to write input into <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_hash_transformation.html#a0b8c7a110d8968268fd02ec32b9a8e8">Final</a> (byte *digest)</td></tr>⌨️ 快捷键说明
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