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<a name="Concept-Index"></a>
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<p>
Next: <a href="Function-and-Data-Index.html#Function-and-Data-Index" accesskey="n" rel="next">Function and Data Index</a>, Previous: <a href="Library-Copying.html#Library-Copying" accesskey="p" rel="prev">Library Copying</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="Concept-Index-1"></a>
<h2 class="unnumbered">Concept Index</h2>

<table><tr><th valign="top">Jump to: &nbsp; </th><td><a class="summary-letter" href="#Concept-Index_cp_letter-C"><b>C</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-D"><b>D</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-E"><b>E</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-F"><b>F</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-G"><b>G</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-H"><b>H</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-I"><b>I</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-L"><b>L</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-M"><b>M</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-S"><b>S</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-U"><b>U</b></a>
 &nbsp; 
</td></tr></table>
<table class="index-cp" border="0">
<tr><td></td><th align="left">Index Entry</th><td>&nbsp;</td><th align="left"> Section</th></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th><a name="Concept-Index_cp_letter-C">C</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="Compiling-with-libfko.html#index-compiling_002c-with-libfko">compiling, with libfko</a>:</td><td>&nbsp;</td><td valign="top"><a href="Compiling-with-libfko.html#Compiling-with-libfko">Compiling with libfko</a></td></tr>
<tr><td></td><td valign="top"><a href="Creating-Contexts.html#index-context_002c-creation">context, creation</a>:</td><td>&nbsp;</td><td valign="top"><a href="Creating-Contexts.html#Creating-Contexts">Creating Contexts</a></td></tr>
<tr><td></td><td valign="top"><a href="Destroying-Contexts.html#index-context_002c-destruction">context, destruction</a>:</td><td>&nbsp;</td><td valign="top"><a href="Destroying-Contexts.html#Destroying-Contexts">Destroying Contexts</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th><a name="Concept-Index_cp_letter-D">D</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="Encryption-Algorithms.html#index-default-encryption">default encryption</a>:</td><td>&nbsp;</td><td valign="top"><a href="Encryption-Algorithms.html#Encryption-Algorithms">Encryption Algorithms</a></td></tr>
<tr><td></td><td valign="top"><a href="Digests.html#index-default-message-digest">default message digest</a>:</td><td>&nbsp;</td><td valign="top"><a href="Digests.html#Digests">Digests</a></td></tr>
<tr><td></td><td valign="top"><a href="HMAC-Digests.html#index-default-message-digest-1">default message digest</a>:</td><td>&nbsp;</td><td valign="top"><a href="HMAC-Digests.html#HMAC-Digests">HMAC Digests</a></td></tr>
<tr><td></td><td valign="top"><a href="Digests.html#index-digest-types">digest types</a>:</td><td>&nbsp;</td><td valign="top"><a href="Digests.html#Digests">Digests</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th><a name="Concept-Index_cp_letter-E">E</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="Encryption-Algorithms.html#index-encryption-types">encryption types</a>:</td><td>&nbsp;</td><td valign="top"><a href="Encryption-Algorithms.html#Encryption-Algorithms">Encryption Algorithms</a></td></tr>
<tr><td></td><td valign="top"><a href="Error-Handling.html#index-error-codes">error codes</a>:</td><td>&nbsp;</td><td valign="top"><a href="Error-Handling.html#Error-Handling">Error Handling</a></td></tr>
<tr><td></td><td valign="top"><a href="Error-Handling.html#index-error-codes_002c-gpgme-related">error codes, gpgme related</a>:</td><td>&nbsp;</td><td valign="top"><a href="Error-Handling.html#Error-Handling">Error Handling</a></td></tr>
<tr><td></td><td valign="top"><a href="Error-Handling.html#index-error-handling">error handling</a>:</td><td>&nbsp;</td><td valign="top"><a href="Error-Handling.html#Error-Handling">Error Handling</a></td></tr>
<tr><td></td><td valign="top"><a href="Error-Handling.html#index-error-strings">error strings</a>:</td><td>&nbsp;</td><td valign="top"><a href="Error-Handling.html#Error-Handling">Error Handling</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th><a name="Concept-Index_cp_letter-F">F</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="Introduction.html#index-Firewall-Knock-Operator_002c-intro">Firewall Knock Operator, intro</a>:</td><td>&nbsp;</td><td valign="top"><a href="Introduction.html#Introduction">Introduction</a></td></tr>
<tr><td></td><td valign="top"><a href="libfko-Header.html#index-fko_002eh">fko.h</a>:</td><td>&nbsp;</td><td valign="top"><a href="libfko-Header.html#libfko-Header">libfko Header</a></td></tr>
<tr><td></td><td valign="top"><a href="Introduction.html#index-fwknop">fwknop</a>:</td><td>&nbsp;</td><td valign="top"><a href="Introduction.html#Introduction">Introduction</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th><a name="Concept-Index_cp_letter-G">G</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="Setting-SPA-Data.html#index-gpg_002dspecific-functions">gpg-specific functions</a>:</td><td>&nbsp;</td><td valign="top"><a href="Setting-SPA-Data.html#Setting-SPA-Data">Setting SPA Data</a></td></tr>
<tr><td></td><td valign="top"><a href="Retrieving-SPA-Data.html#index-gpg_002dspecific-functions-1">gpg-specific functions</a>:</td><td>&nbsp;</td><td valign="top"><a href="Retrieving-SPA-Data.html#Retrieving-SPA-Data">Retrieving SPA Data</a></td></tr>
<tr><td></td><td valign="top"><a href="Utility-Functions.html#index-gpg_002dspecific-functions-2">gpg-specific functions</a>:</td><td>&nbsp;</td><td valign="top"><a href="Utility-Functions.html#Utility-Functions">Utility Functions</a></td></tr>
<tr><td></td><td valign="top"><a href="Error-Handling.html#index-gpg_002dspecific-functions-3">gpg-specific functions</a>:</td><td>&nbsp;</td><td valign="top"><a href="Error-Handling.html#Error-Handling">Error Handling</a></td></tr>
<tr><td></td><td valign="top"><a href="Library-Copying.html#index-GPLv2_002b_002c-General-Public-License">GPLv2+, General Public License</a>:</td><td>&nbsp;</td><td valign="top"><a href="Library-Copying.html#Library-Copying">Library Copying</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th><a name="Concept-Index_cp_letter-H">H</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="libfko-Header.html#index-header-file">header file</a>:</td><td>&nbsp;</td><td valign="top"><a href="libfko-Header.html#libfko-Header">libfko Header</a></td></tr>
<tr><td></td><td valign="top"><a href="HMAC-Digests.html#index-HMAC-digest-types">HMAC digest types</a>:</td><td>&nbsp;</td><td valign="top"><a href="HMAC-Digests.html#HMAC-Digests">HMAC Digests</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th><a name="Concept-Index_cp_letter-I">I</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="libfko-Header.html#index-include-file">include file</a>:</td><td>&nbsp;</td><td valign="top"><a href="libfko-Header.html#libfko-Header">libfko Header</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th><a name="Concept-Index_cp_letter-L">L</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="Compiling-with-libfko.html#index-linking_002c-with-libfko">linking, with libfko</a>:</td><td>&nbsp;</td><td valign="top"><a href="Compiling-with-libfko.html#Compiling-with-libfko">Compiling with libfko</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th><a name="Concept-Index_cp_letter-M">M</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="Digests.html#index-message-digest-types">message digest types</a>:</td><td>&nbsp;</td><td valign="top"><a href="Digests.html#Digests">Digests</a></td></tr>
<tr><td></td><td valign="top"><a href="HMAC-Digests.html#index-message-digest-types-1">message digest types</a>:</td><td>&nbsp;</td><td valign="top"><a href="HMAC-Digests.html#HMAC-Digests">HMAC Digests</a></td></tr>
<tr><td></td><td valign="top"><a href="SPA-Messages.html#index-message-types">message types</a>:</td><td>&nbsp;</td><td valign="top"><a href="SPA-Messages.html#SPA-Messages">SPA Messages</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th><a name="Concept-Index_cp_letter-S">S</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="Introduction.html#index-Single-Packet-Authorization_002c-intro">Single Packet Authorization, intro</a>:</td><td>&nbsp;</td><td valign="top"><a href="Introduction.html#Introduction">Introduction</a></td></tr>
<tr><td></td><td valign="top"><a href="Retrieving-SPA-Data.html#index-spa-data_002c-retrieving-values">spa data, retrieving values</a>:</td><td>&nbsp;</td><td valign="top"><a href="Retrieving-SPA-Data.html#Retrieving-SPA-Data">Retrieving SPA Data</a></td></tr>
<tr><td></td><td valign="top"><a href="Setting-SPA-Data.html#index-spa-data_002c-setting-values">spa data, setting values</a>:</td><td>&nbsp;</td><td valign="top"><a href="Setting-SPA-Data.html#Setting-SPA-Data">Setting SPA Data</a></td></tr>
<tr><td></td><td valign="top"><a href="Utility-Functions.html#index-spa-data_002c-utility-functions">spa data, utility functions</a>:</td><td>&nbsp;</td><td valign="top"><a href="Utility-Functions.html#Utility-Functions">Utility Functions</a></td></tr>
<tr><td></td><td valign="top"><a href="Creating-a-SPA-Message.html#index-spa_002c-data-creation-code-sample">spa, data creation code sample</a>:</td><td>&nbsp;</td><td valign="top"><a href="Creating-a-SPA-Message.html#Creating-a-SPA-Message">Creating a SPA Message</a></td></tr>
<tr><td></td><td valign="top"><a href="SPA-Data-Format.html#index-SPA_002c-data-format">SPA, data format</a>:</td><td>&nbsp;</td><td valign="top"><a href="SPA-Data-Format.html#SPA-Data-Format">SPA Data Format</a></td></tr>
<tr><td></td><td valign="top"><a href="Introduction.html#index-SPA_002c-intro">SPA, intro</a>:</td><td>&nbsp;</td><td valign="top"><a href="Introduction.html#Introduction">Introduction</a></td></tr>
<tr><td></td><td valign="top"><a href="Creating-a-SPA-Message.html#index-spa_002c-message-data-creation">spa, message data creation</a>:</td><td>&nbsp;</td><td valign="top"><a href="Creating-a-SPA-Message.html#Creating-a-SPA-Message">Creating a SPA Message</a></td></tr>
<tr><td></td><td valign="top"><a href="SPA-Messages.html#index-spa_002c-message-types">spa, message types</a>:</td><td>&nbsp;</td><td valign="top"><a href="SPA-Messages.html#SPA-Messages">SPA Messages</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
<tr><th><a name="Concept-Index_cp_letter-U">U</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="Utility-Functions.html#index-utility-functions">utility functions</a>:</td><td>&nbsp;</td><td valign="top"><a href="Utility-Functions.html#Utility-Functions">Utility Functions</a></td></tr>
<tr><td colspan="4"> <hr></td></tr>
</table>
<table><tr><th valign="top">Jump to: &nbsp; </th><td><a class="summary-letter" href="#Concept-Index_cp_letter-C"><b>C</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-D"><b>D</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-E"><b>E</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-F"><b>F</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-G"><b>G</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-H"><b>H</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-I"><b>I</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-L"><b>L</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-M"><b>M</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-S"><b>S</b></a>
 &nbsp; 
<a class="summary-letter" href="#Concept-Index_cp_letter-U"><b>U</b></a>
 &nbsp; 
</td></tr></table>

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Next: <a href="Function-and-Data-Index.html#Function-and-Data-Index" accesskey="n" rel="next">Function and Data Index</a>, Previous: <a href="Library-Copying.html#Library-Copying" accesskey="p" rel="prev">Library Copying</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="#Concept-Index" title="Index" rel="index">Index</a>]</p>
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