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<a href="#pub-methods">Public Member Functions</a> |
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<a href="classSpeck-members.html">List of all members</a> </div>
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<div class="title">Speck Class Reference</div> </div>
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<p><a class="el" href="classSpeck.html" title="Speck block cipher with a 128-bit block size. ">Speck</a> block cipher with a 128-bit block size.
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<a href="classSpeck.html#details">More...</a></p>
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<p><code>#include <<a class="el" href="Speck_8h_source.html">Speck.h</a>></code></p>
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Inheritance diagram for Speck:</div>
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<area href="classBlockCipher.html" title="Abstract base class for block ciphers. " alt="BlockCipher" shape="rect" coords="0,0,81,24"/>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a1f0ea433652d791317863de8a50a0580"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classSpeck.html#a1f0ea433652d791317863de8a50a0580">Speck</a> ()</td></tr>
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<tr class="memdesc:a1f0ea433652d791317863de8a50a0580"><td class="mdescLeft"> </td><td class="mdescRight">Constructs a <a class="el" href="classSpeck.html" title="Speck block cipher with a 128-bit block size. ">Speck</a> block cipher with no initial key. <a href="#a1f0ea433652d791317863de8a50a0580">More...</a><br/></td></tr>
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<tr class="separator:a1f0ea433652d791317863de8a50a0580"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a18a3b982a2cbc48befc8d498de08f188"><td class="memItemLeft" align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classSpeck.html#a18a3b982a2cbc48befc8d498de08f188">blockSize</a> () const </td></tr>
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<tr class="memdesc:a18a3b982a2cbc48befc8d498de08f188"><td class="mdescLeft"> </td><td class="mdescRight">Size of a single block processed by this cipher, in bytes. <a href="#a18a3b982a2cbc48befc8d498de08f188">More...</a><br/></td></tr>
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<tr class="separator:a18a3b982a2cbc48befc8d498de08f188"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a061e43c1363178cda088c3f46e07d87b"><td class="memItemLeft" align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classSpeck.html#a061e43c1363178cda088c3f46e07d87b">keySize</a> () const </td></tr>
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<tr class="memdesc:a061e43c1363178cda088c3f46e07d87b"><td class="mdescLeft"> </td><td class="mdescRight">Default size of the key for this block cipher, in bytes. <a href="#a061e43c1363178cda088c3f46e07d87b">More...</a><br/></td></tr>
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<tr class="separator:a061e43c1363178cda088c3f46e07d87b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a7a07fc025bd25d832e9899333b5dabef"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classSpeck.html#a7a07fc025bd25d832e9899333b5dabef">setKey</a> (const uint8_t *key, size_t len)</td></tr>
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<tr class="memdesc:a7a07fc025bd25d832e9899333b5dabef"><td class="mdescLeft"> </td><td class="mdescRight">Sets the key to use for future encryption and decryption operations. <a href="#a7a07fc025bd25d832e9899333b5dabef">More...</a><br/></td></tr>
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<tr class="separator:a7a07fc025bd25d832e9899333b5dabef"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af6b8b91929e4b5b2023400688c9437f9"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classSpeck.html#af6b8b91929e4b5b2023400688c9437f9">encryptBlock</a> (uint8_t *output, const uint8_t *input)</td></tr>
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<tr class="memdesc:af6b8b91929e4b5b2023400688c9437f9"><td class="mdescLeft"> </td><td class="mdescRight">Encrypts a single block using this cipher. <a href="#af6b8b91929e4b5b2023400688c9437f9">More...</a><br/></td></tr>
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<tr class="separator:af6b8b91929e4b5b2023400688c9437f9"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad8c040df1c52d2559da8fdb3963d28b4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classSpeck.html#ad8c040df1c52d2559da8fdb3963d28b4">decryptBlock</a> (uint8_t *output, const uint8_t *input)</td></tr>
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<tr class="memdesc:ad8c040df1c52d2559da8fdb3963d28b4"><td class="mdescLeft"> </td><td class="mdescRight">Decrypts a single block using this cipher. <a href="#ad8c040df1c52d2559da8fdb3963d28b4">More...</a><br/></td></tr>
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<tr class="separator:ad8c040df1c52d2559da8fdb3963d28b4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aa3866273282addabb9d3703c41fdc95f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classSpeck.html#aa3866273282addabb9d3703c41fdc95f">clear</a> ()</td></tr>
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<tr class="memdesc:aa3866273282addabb9d3703c41fdc95f"><td class="mdescLeft"> </td><td class="mdescRight">Clears all security-sensitive state from this block cipher. <a href="#aa3866273282addabb9d3703c41fdc95f">More...</a><br/></td></tr>
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<tr class="separator:aa3866273282addabb9d3703c41fdc95f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="inherit_header pub_methods_classBlockCipher"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classBlockCipher')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classBlockCipher.html">BlockCipher</a></td></tr>
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<tr class="memitem:adc3d7cba116cbea9ad017f4cded6fe2f inherit pub_methods_classBlockCipher"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="adc3d7cba116cbea9ad017f4cded6fe2f"></a>
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 </td><td class="memItemRight" valign="bottom"><a class="el" href="classBlockCipher.html#adc3d7cba116cbea9ad017f4cded6fe2f">BlockCipher</a> ()</td></tr>
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<tr class="memdesc:adc3d7cba116cbea9ad017f4cded6fe2f inherit pub_methods_classBlockCipher"><td class="mdescLeft"> </td><td class="mdescRight">Constructs a block cipher. <br/></td></tr>
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<tr class="separator:adc3d7cba116cbea9ad017f4cded6fe2f inherit pub_methods_classBlockCipher"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:acec1bc4faeaa6dda2d91bffd79a988f9 inherit pub_methods_classBlockCipher"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classBlockCipher.html#acec1bc4faeaa6dda2d91bffd79a988f9">~BlockCipher</a> ()</td></tr>
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<tr class="memdesc:acec1bc4faeaa6dda2d91bffd79a988f9 inherit pub_methods_classBlockCipher"><td class="mdescLeft"> </td><td class="mdescRight">Destroys this block cipher object. <a href="#acec1bc4faeaa6dda2d91bffd79a988f9">More...</a><br/></td></tr>
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<tr class="separator:acec1bc4faeaa6dda2d91bffd79a988f9 inherit pub_methods_classBlockCipher"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p><a class="el" href="classSpeck.html" title="Speck block cipher with a 128-bit block size. ">Speck</a> block cipher with a 128-bit block size. </p>
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<p><a class="el" href="classSpeck.html" title="Speck block cipher with a 128-bit block size. ">Speck</a> is a family of lightweight block ciphers designed by the National Security Agency (NSA). The ciphers are highly optimized for software implementation on microcontrollers.</p>
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<p>This class implements the <a class="el" href="classSpeck.html" title="Speck block cipher with a 128-bit block size. ">Speck</a> family that uses 128-bit block sizes with 128-bit, 192-bit, or 256-bit key sizes. Other <a class="el" href="classSpeck.html" title="Speck block cipher with a 128-bit block size. ">Speck</a> families support smaller block sizes of 32, 48, 64, or 96 bits but such block sizes are too small for use in modern cryptosystems.</p>
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<dl class="section note"><dt>Note</dt><dd>Current crytoanalysis (up until 2015) has not revealed any obvious weaknesses in the full-round version of <a class="el" href="classSpeck.html" title="Speck block cipher with a 128-bit block size. ">Speck</a>. But if you are wary of ciphers designed by the NSA, then use <a class="el" href="classChaCha.html" title="ChaCha stream cipher. ">ChaCha</a> or AES instead.</dd></dl>
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<p>The <a class="el" href="classSpeckTiny.html" title="Speck block cipher with a 128-bit block size (tiny-memory version). ">SpeckTiny</a> and <a class="el" href="classSpeckSmall.html" title="Speck block cipher with a 128-bit block size (small-memory version). ">SpeckSmall</a> classes provide alternative implementations that have reduced RAM and flash size requirements at the cost of some features and performance.</p>
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<p>References: <a href="https://en.wikipedia.org/wiki/Speck_%28cipher%29,">https://en.wikipedia.org/wiki/Speck_%28cipher%29,</a> <a href="http://eprint.iacr.org/2013/404">http://eprint.iacr.org/2013/404</a></p>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="classSpeckTiny.html" title="Speck block cipher with a 128-bit block size (tiny-memory version). ">SpeckTiny</a>, <a class="el" href="classSpeckSmall.html" title="Speck block cipher with a 128-bit block size (small-memory version). ">SpeckSmall</a> </dd></dl>
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<p>Definition at line <a class="el" href="Speck_8h_source.html#l00028">28</a> of file <a class="el" href="Speck_8h_source.html">Speck.h</a>.</p>
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</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<td class="memname">Speck::Speck </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<p>Constructs a <a class="el" href="classSpeck.html" title="Speck block cipher with a 128-bit block size. ">Speck</a> block cipher with no initial key. </p>
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<p>This constructor must be followed by a call to <a class="el" href="classSpeck.html#a7a07fc025bd25d832e9899333b5dabef" title="Sets the key to use for future encryption and decryption operations. ">setKey()</a> before the block cipher can be used for encryption or decryption. </p>
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<p>Definition at line <a class="el" href="Speck_8cpp_source.html#l00072">72</a> of file <a class="el" href="Speck_8cpp_source.html">Speck.cpp</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<a class="anchor" id="a18a3b982a2cbc48befc8d498de08f188"></a>
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<td class="memname">size_t Speck::blockSize </td>
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<p>Size of a single block processed by this cipher, in bytes. </p>
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<dl class="section return"><dt>Returns</dt><dd>Returns the size of a block in bytes.</dd></dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="classSpeck.html#a061e43c1363178cda088c3f46e07d87b" title="Default size of the key for this block cipher, in bytes. ">keySize()</a>, <a class="el" href="classSpeck.html#af6b8b91929e4b5b2023400688c9437f9" title="Encrypts a single block using this cipher. ">encryptBlock()</a> </dd></dl>
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<p>Implements <a class="el" href="classBlockCipher.html#a7059a310487c128db034b0ce0ad425a0">BlockCipher</a>.</p>
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<p>Definition at line <a class="el" href="Speck_8cpp_source.html#l00082">82</a> of file <a class="el" href="Speck_8cpp_source.html">Speck.cpp</a>.</p>
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<td class="memname">void Speck::clear </td>
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<p>Clears all security-sensitive state from this block cipher. </p>
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<p>Security-sensitive information includes key schedules and any temporary state that is used by <a class="el" href="classSpeck.html#af6b8b91929e4b5b2023400688c9437f9" title="Encrypts a single block using this cipher. ">encryptBlock()</a> or <a class="el" href="classSpeck.html#ad8c040df1c52d2559da8fdb3963d28b4" title="Decrypts a single block using this cipher. ">decryptBlock()</a> which is stored in the object itself.</p>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="classSpeck.html#a7a07fc025bd25d832e9899333b5dabef" title="Sets the key to use for future encryption and decryption operations. ">setKey()</a>, <a class="el" href="classSpeck.html#af6b8b91929e4b5b2023400688c9437f9" title="Encrypts a single block using this cipher. ">encryptBlock()</a>, <a class="el" href="classSpeck.html#ad8c040df1c52d2559da8fdb3963d28b4" title="Decrypts a single block using this cipher. ">decryptBlock()</a> </dd></dl>
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<p>Implements <a class="el" href="classBlockCipher.html#a6f27d46e9dfa7761d014d828ad5f955b">BlockCipher</a>.</p>
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<p>Definition at line <a class="el" href="Speck_8cpp_source.html#l00611">611</a> of file <a class="el" href="Speck_8cpp_source.html">Speck.cpp</a>.</p>
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<td class="memname">void Speck::decryptBlock </td>
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<td>(</td>
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<td class="paramtype">uint8_t * </td>
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<p>Decrypts a single block using this cipher. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">output</td><td>The output buffer to put the plaintext into. Must be at least <a class="el" href="classSpeck.html#a18a3b982a2cbc48befc8d498de08f188" title="Size of a single block processed by this cipher, in bytes. ">blockSize()</a> bytes in length. </td></tr>
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<tr><td class="paramname">input</td><td>The input buffer to read the ciphertext from which is allowed to overlap with <em>output</em>. Must be at least <a class="el" href="classSpeck.html#a18a3b982a2cbc48befc8d498de08f188" title="Size of a single block processed by this cipher, in bytes. ">blockSize()</a> bytes in length.</td></tr>
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</dd>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="classSpeck.html#af6b8b91929e4b5b2023400688c9437f9" title="Encrypts a single block using this cipher. ">encryptBlock()</a>, <a class="el" href="classSpeck.html#a18a3b982a2cbc48befc8d498de08f188" title="Size of a single block processed by this cipher, in bytes. ">blockSize()</a> </dd></dl>
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<p>Implements <a class="el" href="classBlockCipher.html#ac3ba2450222aa1ea804ae4881ab6440c">BlockCipher</a>.</p>
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<p>Definition at line <a class="el" href="Speck_8cpp_source.html#l00457">457</a> of file <a class="el" href="Speck_8cpp_source.html">Speck.cpp</a>.</p>
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<td class="memname">void Speck::encryptBlock </td>
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<td class="paramname"><em>output</em>, </td>
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<p>Encrypts a single block using this cipher. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">output</td><td>The output buffer to put the ciphertext into. Must be at least <a class="el" href="classSpeck.html#a18a3b982a2cbc48befc8d498de08f188" title="Size of a single block processed by this cipher, in bytes. ">blockSize()</a> bytes in length. </td></tr>
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<tr><td class="paramname">input</td><td>The input buffer to read the plaintext from which is allowed to overlap with <em>output</em>. Must be at least <a class="el" href="classSpeck.html#a18a3b982a2cbc48befc8d498de08f188" title="Size of a single block processed by this cipher, in bytes. ">blockSize()</a> bytes in length.</td></tr>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="classSpeck.html#ad8c040df1c52d2559da8fdb3963d28b4" title="Decrypts a single block using this cipher. ">decryptBlock()</a>, <a class="el" href="classSpeck.html#a18a3b982a2cbc48befc8d498de08f188" title="Size of a single block processed by this cipher, in bytes. ">blockSize()</a> </dd></dl>
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<p>Implements <a class="el" href="classBlockCipher.html#aed0788b25f6bb2f1bd47d5a5f0c5db33">BlockCipher</a>.</p>
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<p>Definition at line <a class="el" href="Speck_8cpp_source.html#l00306">306</a> of file <a class="el" href="Speck_8cpp_source.html">Speck.cpp</a>.</p>
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<td class="memname">size_t Speck::keySize </td>
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<p>Default size of the key for this block cipher, in bytes. </p>
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<p>This value indicates the default, or recommended, size for the key.</p>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="classSpeck.html#a7a07fc025bd25d832e9899333b5dabef" title="Sets the key to use for future encryption and decryption operations. ">setKey()</a>, <a class="el" href="classSpeck.html#a18a3b982a2cbc48befc8d498de08f188" title="Size of a single block processed by this cipher, in bytes. ">blockSize()</a> </dd></dl>
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<p>Implements <a class="el" href="classBlockCipher.html#afde6004a859e015d877eab3c37042a0f">BlockCipher</a>.</p>
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<p>Definition at line <a class="el" href="Speck_8cpp_source.html#l00087">87</a> of file <a class="el" href="Speck_8cpp_source.html">Speck.cpp</a>.</p>
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<td class="memname">bool Speck::setKey </td>
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<p>Sets the key to use for future encryption and decryption operations. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">key</td><td>The key to use. </td></tr>
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<tr><td class="paramname">len</td><td>The length of the key. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Returns false if the key length is not supported, or the key is somehow "weak" and unusable by this cipher.</dd></dl>
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<p>Use <a class="el" href="classSpeck.html#aa3866273282addabb9d3703c41fdc95f" title="Clears all security-sensitive state from this block cipher. ">clear()</a> or the destructor to remove the key and any other sensitive data from the object once encryption or decryption is complete.</p>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="classSpeck.html#a061e43c1363178cda088c3f46e07d87b" title="Default size of the key for this block cipher, in bytes. ">keySize()</a>, <a class="el" href="classSpeck.html#aa3866273282addabb9d3703c41fdc95f" title="Clears all security-sensitive state from this block cipher. ">clear()</a> </dd></dl>
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<p>Implements <a class="el" href="classBlockCipher.html#a9a05307664469777592799c8f77397c4">BlockCipher</a>.</p>
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<p>Definition at line <a class="el" href="Speck_8cpp_source.html#l00105">105</a> of file <a class="el" href="Speck_8cpp_source.html">Speck.cpp</a>.</p>
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<hr/>The documentation for this class was generated from the following files:<ul>
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<li><a class="el" href="Speck_8h_source.html">Speck.h</a></li>
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<li><a class="el" href="Speck_8cpp_source.html">Speck.cpp</a></li>
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