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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>libusual: usual/crypto/keccak_prng.h File Reference</title>
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<div class="title">usual/crypto/keccak_prng.h File Reference</div> </div>
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<p>Implements PRNG mode for Keccak sponge function.
<a href="#details">More...</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="struct_keccak_p_r_n_g.html">KeccakPRNG</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">State structure. <a href="struct_keccak_p_r_n_g.html#details">More...</a><br/></td></tr>
<tr><td colspan="2"><h2><a name="func-members"></a>
Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="keccak__prng_8h.html#aa0db48b02a7d0564519671315306e974">keccak_prng_init</a> (struct <a class="el" href="struct_keccak_p_r_n_g.html">KeccakPRNG</a> *prng, int capacity)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Setup Keccak with specified capacity. <a href="#aa0db48b02a7d0564519671315306e974"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="keccak__prng_8h.html#a88e345cc5e89e06e10a1511c77fe877f">keccak_prng_add_data</a> (struct <a class="el" href="struct_keccak_p_r_n_g.html">KeccakPRNG</a> *prng, const void *data, size_t len)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Merge entropy data into state. <a href="#a88e345cc5e89e06e10a1511c77fe877f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="keccak__prng_8h.html#a66d0d3dc82fec6c1ef764b570321ede0">keccak_prng_extract</a> (struct <a class="el" href="struct_keccak_p_r_n_g.html">KeccakPRNG</a> *prng, void *data, size_t len)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Extract PRNG bytes from state. <a href="#a66d0d3dc82fec6c1ef764b570321ede0"></a><br/></td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>Implements PRNG mode for Keccak sponge function. </p>
</div><hr/><h2>Function Documentation</h2>
<a class="anchor" id="aa0db48b02a7d0564519671315306e974"></a><!-- doxytag: member="keccak_prng.h::keccak_prng_init" ref="aa0db48b02a7d0564519671315306e974" args="(struct KeccakPRNG *prng, int capacity)" -->
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<td class="memname">bool <a class="el" href="keccak__prng_8h.html#aa0db48b02a7d0564519671315306e974">keccak_prng_init</a> </td>
<td>(</td>
<td class="paramtype">struct <a class="el" href="struct_keccak_p_r_n_g.html">KeccakPRNG</a> * </td>
<td class="paramname"><em>prng</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>capacity</em> </td>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Setup Keccak with specified capacity. </p>
<dl class="params"><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">prng</td><td>State structure to be initialized. </td></tr>
<tr><td class="paramname">capacity</td><td>Keccak capacity in bits. </td></tr>
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</dd>
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<dl class="return"><dt><b>Returns:</b></dt><dd>False if invalid capacity, true otherwise. </dd></dl>
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<a class="anchor" id="a88e345cc5e89e06e10a1511c77fe877f"></a><!-- doxytag: member="keccak_prng.h::keccak_prng_add_data" ref="a88e345cc5e89e06e10a1511c77fe877f" args="(struct KeccakPRNG *prng, const void *data, size_t len)" -->
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<td class="memname">void <a class="el" href="keccak__prng_8h.html#a88e345cc5e89e06e10a1511c77fe877f">keccak_prng_add_data</a> </td>
<td>(</td>
<td class="paramtype">struct <a class="el" href="struct_keccak_p_r_n_g.html">KeccakPRNG</a> * </td>
<td class="paramname"><em>prng</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const void * </td>
<td class="paramname"><em>data</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>len</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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<div class="memdoc">
<p>Merge entropy data into state. </p>
</div>
</div>
<a class="anchor" id="a66d0d3dc82fec6c1ef764b570321ede0"></a><!-- doxytag: member="keccak_prng.h::keccak_prng_extract" ref="a66d0d3dc82fec6c1ef764b570321ede0" args="(struct KeccakPRNG *prng, void *data, size_t len)" -->
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<td class="memname">bool <a class="el" href="keccak__prng_8h.html#a66d0d3dc82fec6c1ef764b570321ede0">keccak_prng_extract</a> </td>
<td>(</td>
<td class="paramtype">struct <a class="el" href="struct_keccak_p_r_n_g.html">KeccakPRNG</a> * </td>
<td class="paramname"><em>prng</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>data</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>len</em> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td>
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<div class="memdoc">
<p>Extract PRNG bytes from state. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>True, if extraction was successful. False if state has not been initialzed with <a class="el" href="keccak__prng_8h.html#a88e345cc5e89e06e10a1511c77fe877f" title="Merge entropy data into state.">keccak_prng_add_data()</a>. </dd></dl>
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