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      <h1 class="title">src/checksums/sha3</h1>
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    <ul class="simple simple-toc" id="toc-list">
  <li><a class="reference" id="implemented-algorithms_toc" href="#implemented-algorithms">Implemented Algorithms</a></li>
<li>
  <a class="reference reference-toplevel" href="#6" id="56">Imports</a>
</li>
<li>
  <details open>
    <summary><a class="reference reference-toplevel" href="#7" id="57">Types</a></summary>
    <ul class="simple simple-toc-section">
      <li><a class="reference" href="#Sha3Digest_224" title="Sha3Digest_224 = array[28, char]">Sha3Digest_224</a></li>
<li><a class="reference" href="#Sha3Digest_256" title="Sha3Digest_256 = array[32, char]">Sha3Digest_256</a></li>
<li><a class="reference" href="#Sha3Digest_384" title="Sha3Digest_384 = array[48, char]">Sha3Digest_384</a></li>
<li><a class="reference" href="#Sha3Digest_512" title="Sha3Digest_512 = array[64, char]">Sha3Digest_512</a></li>
<li><a class="reference" href="#Sha3Instance" title="Sha3Instance = enum
  Sha3_224,                 ## SHA3-224 with an output size of 28 bytes
  Sha3_256,                 ## SHA3-256 with an output size of 32 bytes
  Sha3_384,                 ## SHA3-384 with an output size of 48 bytes
  Sha3_512                   ## SHA3-512 with an output size of 64 bytes">Sha3Instance</a></li>
<li><a class="reference" href="#Sha3State" title="Sha3State = distinct KeccakState">Sha3State</a></li>
<li><a class="reference" href="#Sha3StateStatic" title="Sha3StateStatic[instance] = distinct Sha3State">Sha3StateStatic</a></li>
<li><a class="reference" href="#ShakeInstance" title="ShakeInstance = enum
  Shake128,                 ## Shake-128
  Shake256,                 ## Shake-256
  Shake512                   ## Shake-512 (Keccak proposal; not officially included in SHA3)">ShakeInstance</a></li>
<li><a class="reference" href="#ShakeState" title="ShakeState = distinct KeccakState">ShakeState</a></li>

    </ul>
  </details>
</li>
<li>
  <details open>
    <summary><a class="reference reference-toplevel" href="#12" id="62">Procs</a></summary>
    <ul class="simple simple-toc-section">
      <ul class="simple nested-toc-section">digest
  <li><a class="reference" href="#digest%2CSha3State%2CopenArray%5Bchar%5D" title="digest(state: var Sha3State; dest: var openArray[char]): int">digest(state: var Sha3State; dest: var openArray[char]): int</a></li>
<li><a class="reference" href="#digest%2CSha3StateStatic%5BSha3Instance%5D" title="digest(state: var Sha3StateStatic[Sha3_224]): Sha3Digest_224">digest(state: var Sha3StateStatic[Sha3_224]): Sha3Digest_224</a></li>
<li><a class="reference" href="#digest%2CSha3StateStatic%5BSha3Instance%5D_2" title="digest(state: var Sha3StateStatic[Sha3_256]): Sha3Digest_256">digest(state: var Sha3StateStatic[Sha3_256]): Sha3Digest_256</a></li>
<li><a class="reference" href="#digest%2CSha3StateStatic%5BSha3Instance%5D_3" title="digest(state: var Sha3StateStatic[Sha3_384]): Sha3Digest_384">digest(state: var Sha3StateStatic[Sha3_384]): Sha3Digest_384</a></li>
<li><a class="reference" href="#digest%2CSha3StateStatic%5BSha3Instance%5D_4" title="digest(state: var Sha3StateStatic[Sha3_512]): Sha3Digest_512">digest(state: var Sha3StateStatic[Sha3_512]): Sha3Digest_512</a></li>

</ul>
<ul class="simple nested-toc-section">digestLength
  <li><a class="reference" href="#digestLength%2CSha3Instance" title="digestLength(instance: Sha3Instance): int">digestLength(instance: Sha3Instance): int</a></li>
<li><a class="reference" href="#digestLength%2CShakeInstance" title="digestLength(instance: ShakeInstance): int">digestLength(instance: ShakeInstance): int</a></li>

</ul>
<ul class="simple nested-toc-section">finalize
  <li><a class="reference" href="#finalize%2CShakeState" title="finalize(state: var ShakeState)">finalize(state: var ShakeState)</a></li>

</ul>
<ul class="simple nested-toc-section">initSha3
  <li><a class="reference" href="#initSha3%2CSha3Instance" title="initSha3(instance: Sha3Instance): Sha3State">initSha3(instance: Sha3Instance): Sha3State</a></li>

</ul>
<ul class="simple nested-toc-section">initSha3_224
  <li><a class="reference" href="#initSha3_224" title="initSha3_224(): Sha3StateStatic[Sha3_224]">initSha3_224(): Sha3StateStatic[Sha3_224]</a></li>

</ul>
<ul class="simple nested-toc-section">initSha3_256
  <li><a class="reference" href="#initSha3_256" title="initSha3_256(): Sha3StateStatic[Sha3_256]">initSha3_256(): Sha3StateStatic[Sha3_256]</a></li>

</ul>
<ul class="simple nested-toc-section">initSha3_384
  <li><a class="reference" href="#initSha3_384" title="initSha3_384(): Sha3StateStatic[Sha3_384]">initSha3_384(): Sha3StateStatic[Sha3_384]</a></li>

</ul>
<ul class="simple nested-toc-section">initSha3_512
  <li><a class="reference" href="#initSha3_512" title="initSha3_512(): Sha3StateStatic[Sha3_512]">initSha3_512(): Sha3StateStatic[Sha3_512]</a></li>

</ul>
<ul class="simple nested-toc-section">initSha3StateStatic
  <li><a class="reference" href="#initSha3StateStatic%2CstaticSha3Instance" title="initSha3StateStatic(instance: static Sha3Instance): Sha3StateStatic[instance]">initSha3StateStatic(instance: static Sha3Instance): Sha3StateStatic[instance]</a></li>

</ul>
<ul class="simple nested-toc-section">initShake
  <li><a class="reference" href="#initShake%2CShakeInstance" title="initShake(instance: ShakeInstance): ShakeState">initShake(instance: ShakeInstance): ShakeState</a></li>

</ul>
<ul class="simple nested-toc-section">secureHash
  <li><a class="reference" href="#secureHash%2CSha3Instance%2CopenArray%5Bchar%5D" title="secureHash(instance: Sha3Instance; data: openArray[char]): seq[char]">secureHash(instance: Sha3Instance; data: openArray[char]): seq[char]</a></li>
<li><a class="reference" href="#secureHash%2CstaticSha3Instance%2CopenArray%5Bchar%5D" title="secureHash(instance: static Sha3Instance; data: openArray[char]): auto">secureHash(instance: static Sha3Instance; data: openArray[char]): auto</a></li>

</ul>
<ul class="simple nested-toc-section">shakeOut
  <li><a class="reference" href="#shakeOut%2CShakeState%2CopenArray%5Bchar%5D" title="shakeOut(state: var ShakeState; dest: var openArray[char])">shakeOut(state: var ShakeState; dest: var openArray[char])</a></li>

</ul>
<ul class="simple nested-toc-section">update
  <li><a class="reference" href="#update%2CSha3State%2CopenArray%5Bchar%5D" title="update(state: var Sha3State; data: openArray[char])">update(state: var Sha3State; data: openArray[char])</a></li>
<li><a class="reference" href="#update%2CShakeState%2CopenArray%5Bchar%5D" title="update(state: var ShakeState; data: openArray[char])">update(state: var ShakeState; data: openArray[char])</a></li>
<li><a class="reference" href="#update%2CSha3StateStatic%5Binstance%5D%2CopenArray%5Bchar%5D" title="update[instance: static Sha3Instance](state: var Sha3StateStatic[instance];
                                      data: openArray[char])">update[instance: static Sha3Instance](state: var Sha3StateStatic[instance];
                                      data: openArray[char])</a></li>

</ul>

    </ul>
  </details>
</li>
<li>
  <a class="reference reference-toplevel" href="#19" id="69">Exports</a>
</li>

</ul>

  </div>
  <div class="nine columns" id="content">
    
    <div id="tocRoot"></div>
    
    <p class="module-desc"><p><a class="reference external" href="https://en.wikipedia.org/wiki/SHA-3">SHA-3 (Secure Hash Algorithm 3)</a> is a cryptographic hash function which takes an input and produces a value known as a message digest.</p>
<p>It provides both fixed size algorithms that generate a one-shot message digest of a determinate size as well as an <em>extendable-output function</em> (XOF) variant that can produce any message digest lengths desired.</p>

<h1><a class="toc-backref" id="implemented-algorithms" href="#implemented-algorithms">Implemented Algorithms</a></h1><p>Fixed size functions:</p>
<ul class="simple"><li>SHA3-224</li>
<li>SHA3-256</li>
<li>SHA3-384</li>
<li>SHA3-512</li>
</ul>
<p>Extended-output functions:</p>
<ul class="simple"><li>SHAKE128</li>
<li>SHAKE256</li>
<li>SHAKE512</li>
</ul>
<p>For convenience, this module provides output-length type checked functions for the implemented fixed size functions via <tt class="docutils literal"><span class="pre"><span class="Identifier">initSha3_224</span></span></tt>, <tt class="docutils literal"><span class="pre"><span class="Identifier">initSha3_256</span></span></tt>, <tt class="docutils literal"><span class="pre"><span class="Identifier">initSha3_384</span></span></tt> and <tt class="docutils literal"><span class="pre"><span class="Identifier">initSha3_512</span></span></tt>. These functions provide a <tt class="docutils literal"><span class="pre"><span class="Identifier">digest</span></span></tt> overload returning a correctly sized message digest array.</p>
<p>If more relaxed types are required, an &quot;unchecked&quot; <tt class="docutils literal"><span class="pre"><span class="Identifier">Sha3State</span></span></tt> can be used, but care must be taken to provide <tt class="docutils literal"><span class="pre"><span class="Identifier">digest</span></span></tt> with a correctly sized <tt class="docutils literal"><span class="pre"><span class="Identifier">dest</span></span></tt> array. </p>

<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">src</span><span class="Operator">/</span><span class="Identifier">checksums</span><span class="Operator">/</span><span class="Identifier">sha3</span>
<span class="Keyword">var</span> <span class="Identifier">hasher</span> <span class="Operator">=</span> <span class="Identifier">initSha3_256</span><span class="Punctuation">(</span><span class="Punctuation">)</span>

<span class="Identifier">hasher</span><span class="Operator">.</span><span class="Identifier">update</span><span class="Punctuation">(</span><span class="StringLit">&quot;The quick brown fox &quot;</span><span class="Punctuation">)</span>
<span class="Identifier">hasher</span><span class="Operator">.</span><span class="Identifier">update</span><span class="Punctuation">(</span><span class="StringLit">&quot;jumps over the lazy dog&quot;</span><span class="Punctuation">)</span>

<span class="Keyword">let</span> <span class="Identifier">digest</span> <span class="Operator">=</span> <span class="Identifier">hasher</span><span class="Operator">.</span><span class="Identifier">digest</span><span class="Punctuation">(</span><span class="Punctuation">)</span>

<span class="Identifier">assert</span> <span class="Operator">$</span><span class="Identifier">digest</span> <span class="Operator">==</span> <span class="StringLit">&quot;69070dda01975c8c120c3aada1b282394e7f032fa9cf32f4cb2259a0897dfc04&quot;</span></pre>
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">src</span><span class="Operator">/</span><span class="Identifier">checksums</span><span class="Operator">/</span><span class="Identifier">sha3</span>
<span class="Keyword">var</span> <span class="Identifier">xof</span> <span class="Operator">=</span> <span class="Identifier">initShake</span><span class="Punctuation">(</span><span class="Identifier">Shake128</span><span class="Punctuation">)</span>

<span class="Identifier">xof</span><span class="Operator">.</span><span class="Identifier">update</span><span class="Punctuation">(</span><span class="StringLit">&quot;The quick brown fox &quot;</span><span class="Punctuation">)</span>
<span class="Identifier">xof</span><span class="Operator">.</span><span class="Identifier">update</span><span class="Punctuation">(</span><span class="StringLit">&quot;jumps over the lazy dog&quot;</span><span class="Punctuation">)</span>
<span class="Identifier">xof</span><span class="Operator">.</span><span class="Identifier">finalize</span><span class="Punctuation">(</span><span class="Punctuation">)</span>

<span class="Keyword">var</span> <span class="Identifier">digest</span><span class="Punctuation">:</span> <span class="Identifier">array</span><span class="Punctuation">[</span><span class="DecNumber">16</span><span class="Punctuation">,</span> <span class="Identifier">char</span><span class="Punctuation">]</span>

<span class="Identifier">xof</span><span class="Operator">.</span><span class="Identifier">shakeOut</span><span class="Punctuation">(</span><span class="Identifier">digest</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Operator">$</span><span class="Identifier">digest</span> <span class="Operator">==</span> <span class="StringLit">&quot;f4202e3c5852f9182a0430fd8144f0a7&quot;</span>

<span class="Identifier">xof</span><span class="Operator">.</span><span class="Identifier">shakeOut</span><span class="Punctuation">(</span><span class="Identifier">digest</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Operator">$</span><span class="Identifier">digest</span> <span class="Operator">==</span> <span class="StringLit">&quot;4b95e7417ecae17db0f8cfeed0e3e66e&quot;</span></pre></p>
    <div class="section" id="6">
  <h1><a class="toc-backref" href="#6">Imports</a></h1>
  <dl class="item">
    <a class="reference external" href="sha_utils.html">sha_utils</a>
  </dl>
</div>
<div class="section" id="7">
  <h1><a class="toc-backref" href="#7">Types</a></h1>
  <dl class="item">
    <div id="Sha3Digest_224">
  <dt><pre><a href="sha3.html#Sha3Digest_224"><span class="Identifier">Sha3Digest_224</span></a> <span class="Other">=</span> <span class="Identifier">array</span><span class="Other">[</span><span class="DecNumber">28</span><span class="Other">,</span> <span class="Identifier">char</span><span class="Other">]</span></pre></dt>
  <dd>
    
    SHA3-224 output digest.
    
  </dd>
</div>
<div id="Sha3Digest_256">
  <dt><pre><a href="sha3.html#Sha3Digest_256"><span class="Identifier">Sha3Digest_256</span></a> <span class="Other">=</span> <span class="Identifier">array</span><span class="Other">[</span><span class="DecNumber">32</span><span class="Other">,</span> <span class="Identifier">char</span><span class="Other">]</span></pre></dt>
  <dd>
    
    SHA3-256 output digest.
    
  </dd>
</div>
<div id="Sha3Digest_384">
  <dt><pre><a href="sha3.html#Sha3Digest_384"><span class="Identifier">Sha3Digest_384</span></a> <span class="Other">=</span> <span class="Identifier">array</span><span class="Other">[</span><span class="DecNumber">48</span><span class="Other">,</span> <span class="Identifier">char</span><span class="Other">]</span></pre></dt>
  <dd>
    
    SHA3-384 output digest.
    
  </dd>
</div>
<div id="Sha3Digest_512">
  <dt><pre><a href="sha3.html#Sha3Digest_512"><span class="Identifier">Sha3Digest_512</span></a> <span class="Other">=</span> <span class="Identifier">array</span><span class="Other">[</span><span class="DecNumber">64</span><span class="Other">,</span> <span class="Identifier">char</span><span class="Other">]</span></pre></dt>
  <dd>
    
    SHA3-512 output digest.
    
  </dd>
</div>
<div id="Sha3Instance">
  <dt><pre><a href="sha3.html#Sha3Instance"><span class="Identifier">Sha3Instance</span></a> <span class="Other">=</span> <span class="Keyword">enum</span>
  <span class="Identifier">Sha3_224</span><span class="Other">,</span>                 <span class="Comment">## SHA3-224 with an output size of 28 bytes</span>
  <span class="Identifier">Sha3_256</span><span class="Other">,</span>                 <span class="Comment">## SHA3-256 with an output size of 32 bytes</span>
  <span class="Identifier">Sha3_384</span><span class="Other">,</span>                 <span class="Comment">## SHA3-384 with an output size of 48 bytes</span>
  <span class="Identifier">Sha3_512</span>                   <span class="Comment">## SHA3-512 with an output size of 64 bytes</span></pre></dt>
  <dd>
    
    Selects a specific SHA3 instance with well known message digest lengths and properties.
    
  </dd>
</div>
<div id="Sha3State">
  <dt><pre><a href="sha3.html#Sha3State"><span class="Identifier">Sha3State</span></a> <span class="Other">=</span> <span class="Keyword">distinct</span> <span class="Identifier">KeccakState</span></pre></dt>
  <dd>
    
    <p>An unchecked SHA3 state created from a specific <tt class="docutils literal"><span class="pre"><span class="Identifier">Sha3Instance</span></span></tt>.</p>
<p>Unchecked meaning the user has to make sure that the target buffer has enough room to store the resulting digest, otherwise <tt class="docutils literal"><span class="pre"><span class="Identifier">digest</span></span></tt> will truncate the output.</p>

    
  </dd>
</div>
<div id="Sha3StateStatic">
  <dt><pre><a href="sha3.html#Sha3StateStatic"><span class="Identifier">Sha3StateStatic</span></a><span class="Other">[</span><span class="Identifier">instance</span><span class="Other">]</span> <span class="Other">=</span> <span class="Keyword">distinct</span> <a href="sha3.html#Sha3State"><span class="Identifier">Sha3State</span></a></pre></dt>
  <dd>
    
    A statically checked SHA3 state created from a specific <tt class="docutils literal"><span class="pre"><span class="Identifier">Sha3Instance</span></span></tt>.
    
  </dd>
</div>
<div id="ShakeInstance">
  <dt><pre><a href="sha3.html#ShakeInstance"><span class="Identifier">ShakeInstance</span></a> <span class="Other">=</span> <span class="Keyword">enum</span>
  <span class="Identifier">Shake128</span><span class="Other">,</span>                 <span class="Comment">## Shake-128</span>
  <span class="Identifier">Shake256</span><span class="Other">,</span>                 <span class="Comment">## Shake-256</span>
  <span class="Identifier">Shake512</span>                   <span class="Comment">## Shake-512 (Keccak proposal; not officially included in SHA3)</span></pre></dt>
  <dd>
    
    Selects a specific Shake instance with well known properties.
    
  </dd>
</div>
<div id="ShakeState">
  <dt><pre><a href="sha3.html#ShakeState"><span class="Identifier">ShakeState</span></a> <span class="Other">=</span> <span class="Keyword">distinct</span> <span class="Identifier">KeccakState</span></pre></dt>
  <dd>
    
    A Shake state created from a specific <tt class="docutils literal"><span class="pre"><span class="Identifier">ShakeInstance</span></span></tt>.
    
  </dd>
</div>

  </dl>
</div>
<div class="section" id="12">
  <h1><a class="toc-backref" href="#12">Procs</a></h1>
  <dl class="item">
    <div id="digest-procs-all">
  <div id="digest,Sha3State,openArray[char]">
  <dt><pre><span class="Keyword">proc</span> <a href="#digest%2CSha3State%2CopenArray%5Bchar%5D"><span class="Identifier">digest</span></a><span class="Other">(</span><span class="Identifier">state</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="sha3.html#Sha3State"><span class="Identifier">Sha3State</span></a><span class="Other">;</span> <span class="Identifier">dest</span><span class="Other">:</span> <span class="Keyword">var</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">char</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">int</span> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    <p>Finishes, stores the completed message digest in <tt class="docutils literal"><span class="pre"><span class="Identifier">dest</span></span></tt> and returns the number of bytes written in <tt class="docutils literal"><span class="pre"><span class="Identifier">dest</span></span></tt>.</p>
<p>If <tt class="docutils literal"><span class="pre"><span class="Identifier">dest</span></span></tt> is not big enough to contain the digest produced by the selected instance, everything that would overflow is truncated.</p>

    
  </dd>
</div>
<div id="digest,Sha3StateStatic[Sha3Instance]">
  <dt><pre><span class="Keyword">proc</span> <a href="#digest%2CSha3StateStatic%5BSha3Instance%5D"><span class="Identifier">digest</span></a><span class="Other">(</span><span class="Identifier">state</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="sha3.html#Sha3StateStatic"><span class="Identifier">Sha3StateStatic</span></a><span class="Other">[</span><span class="Identifier">Sha3_224</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="sha3.html#Sha3Digest_224"><span class="Identifier">Sha3Digest_224</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Finishes and returns the completed SHA3-224 message digest.
    
  </dd>
</div>
<div id="digest,Sha3StateStatic[Sha3Instance]_2">
  <dt><pre><span class="Keyword">proc</span> <a href="#digest%2CSha3StateStatic%5BSha3Instance%5D_2"><span class="Identifier">digest</span></a><span class="Other">(</span><span class="Identifier">state</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="sha3.html#Sha3StateStatic"><span class="Identifier">Sha3StateStatic</span></a><span class="Other">[</span><span class="Identifier">Sha3_256</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="sha3.html#Sha3Digest_256"><span class="Identifier">Sha3Digest_256</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Finishes and returns the completed SHA3-256 message digest.
    
  </dd>
</div>
<div id="digest,Sha3StateStatic[Sha3Instance]_3">
  <dt><pre><span class="Keyword">proc</span> <a href="#digest%2CSha3StateStatic%5BSha3Instance%5D_3"><span class="Identifier">digest</span></a><span class="Other">(</span><span class="Identifier">state</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="sha3.html#Sha3StateStatic"><span class="Identifier">Sha3StateStatic</span></a><span class="Other">[</span><span class="Identifier">Sha3_384</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="sha3.html#Sha3Digest_384"><span class="Identifier">Sha3Digest_384</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Finishes and returns the completed SHA3-284 message digest.
    
  </dd>
</div>
<div id="digest,Sha3StateStatic[Sha3Instance]_4">
  <dt><pre><span class="Keyword">proc</span> <a href="#digest%2CSha3StateStatic%5BSha3Instance%5D_4"><span class="Identifier">digest</span></a><span class="Other">(</span><span class="Identifier">state</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="sha3.html#Sha3StateStatic"><span class="Identifier">Sha3StateStatic</span></a><span class="Other">[</span><span class="Identifier">Sha3_512</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="sha3.html#Sha3Digest_512"><span class="Identifier">Sha3Digest_512</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Finishes and returns the completed SHA3-512 message digest.
    
  </dd>
</div>

</div>
<div id="digestLength-procs-all">
  <div id="digestLength,Sha3Instance">
  <dt><pre><span class="Keyword">func</span> <a href="#digestLength%2CSha3Instance"><span class="Identifier">digestLength</span></a><span class="Other">(</span><span class="Identifier">instance</span><span class="Other">:</span> <a href="sha3.html#Sha3Instance"><span class="Identifier">Sha3Instance</span></a><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">int</span> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Returns the message digest size for the selected SHA3 instance.
    
  </dd>
</div>
<div id="digestLength,ShakeInstance">
  <dt><pre><span class="Keyword">func</span> <a href="#digestLength%2CShakeInstance"><span class="Identifier">digestLength</span></a><span class="Other">(</span><span class="Identifier">instance</span><span class="Other">:</span> <a href="sha3.html#ShakeInstance"><span class="Identifier">ShakeInstance</span></a><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">int</span> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Returns the message digest size for the selected Shake instance.
    
  </dd>
</div>

</div>
<div id="finalize-procs-all">
  <div id="finalize,ShakeState">
  <dt><pre><span class="Keyword">proc</span> <a href="#finalize%2CShakeState"><span class="Identifier">finalize</span></a><span class="Other">(</span><span class="Identifier">state</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="sha3.html#ShakeState"><span class="Identifier">ShakeState</span></a><span class="Other">)</span> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Finishes the input digestion state of the given <tt class="docutils literal"><span class="pre"><span class="Identifier">ShakeState</span></span></tt> and readies it for message digest retrieval.
    
  </dd>
</div>

</div>
<div id="initSha3-procs-all">
  <div id="initSha3,Sha3Instance">
  <dt><pre><span class="Keyword">func</span> <a href="#initSha3%2CSha3Instance"><span class="Identifier">initSha3</span></a><span class="Other">(</span><span class="Identifier">instance</span><span class="Other">:</span> <a href="sha3.html#Sha3Instance"><span class="Identifier">Sha3Instance</span></a><span class="Other">)</span><span class="Other">:</span> <a href="sha3.html#Sha3State"><span class="Identifier">Sha3State</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Constructs a new unchecked SHA3 state for the selected instance <tt class="docutils literal"><span class="pre"><span class="Identifier">instance</span></span></tt>.
    
  </dd>
</div>

</div>
<div id="initSha3_224-procs-all">
  <div id="initSha3_224">
  <dt><pre><span class="Keyword">func</span> <a href="#initSha3_224"><span class="Identifier">initSha3_224</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">:</span> <a href="sha3.html#Sha3StateStatic"><span class="Identifier">Sha3StateStatic</span></a><span class="Other">[</span><span class="Identifier">Sha3_224</span><span class="Other">]</span> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Constructs a new statically checked state for the SHA3-224 instance.
    
  </dd>
</div>

</div>
<div id="initSha3_256-procs-all">
  <div id="initSha3_256">
  <dt><pre><span class="Keyword">func</span> <a href="#initSha3_256"><span class="Identifier">initSha3_256</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">:</span> <a href="sha3.html#Sha3StateStatic"><span class="Identifier">Sha3StateStatic</span></a><span class="Other">[</span><span class="Identifier">Sha3_256</span><span class="Other">]</span> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Constructs a new statically checked state for the SHA3-256 instance.
    
  </dd>
</div>

</div>
<div id="initSha3_384-procs-all">
  <div id="initSha3_384">
  <dt><pre><span class="Keyword">func</span> <a href="#initSha3_384"><span class="Identifier">initSha3_384</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">:</span> <a href="sha3.html#Sha3StateStatic"><span class="Identifier">Sha3StateStatic</span></a><span class="Other">[</span><span class="Identifier">Sha3_384</span><span class="Other">]</span> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Constructs a new statically checked state for the SHA3-384 instance.
    
  </dd>
</div>

</div>
<div id="initSha3_512-procs-all">
  <div id="initSha3_512">
  <dt><pre><span class="Keyword">func</span> <a href="#initSha3_512"><span class="Identifier">initSha3_512</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">:</span> <a href="sha3.html#Sha3StateStatic"><span class="Identifier">Sha3StateStatic</span></a><span class="Other">[</span><span class="Identifier">Sha3_512</span><span class="Other">]</span> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Constructs a new statically checked state for the SHA3-512 instance.
    
  </dd>
</div>

</div>
<div id="initSha3StateStatic-procs-all">
  <div id="initSha3StateStatic,staticSha3Instance">
  <dt><pre><span class="Keyword">func</span> <a href="#initSha3StateStatic%2CstaticSha3Instance"><span class="Identifier">initSha3StateStatic</span></a><span class="Other">(</span><span class="Identifier">instance</span><span class="Other">:</span> <span class="Identifier">static</span> <span class="Identifier">Sha3Instance</span><span class="Other">)</span><span class="Other">:</span> <a href="sha3.html#Sha3StateStatic"><span class="Identifier">Sha3StateStatic</span></a><span class="Other">[</span>
    <span class="Identifier">instance</span><span class="Other">]</span></pre></dt>
  <dd>
    
    Constructs a new statically checked SHA3 state for the selected instance <tt class="docutils literal"><span class="pre"><span class="Identifier">instance</span></span></tt>.
    
  </dd>
</div>

</div>
<div id="initShake-procs-all">
  <div id="initShake,ShakeInstance">
  <dt><pre><span class="Keyword">func</span> <a href="#initShake%2CShakeInstance"><span class="Identifier">initShake</span></a><span class="Other">(</span><span class="Identifier">instance</span><span class="Other">:</span> <a href="sha3.html#ShakeInstance"><span class="Identifier">ShakeInstance</span></a><span class="Other">)</span><span class="Other">:</span> <a href="sha3.html#ShakeState"><span class="Identifier">ShakeState</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Constructs a new Shake state for the selected instance <tt class="docutils literal"><span class="pre"><span class="Identifier">instance</span></span></tt>.
    
  </dd>
</div>

</div>
<div id="secureHash-procs-all">
  <div id="secureHash,Sha3Instance,openArray[char]">
  <dt><pre><span class="Keyword">proc</span> <a href="#secureHash%2CSha3Instance%2CopenArray%5Bchar%5D"><span class="Identifier">secureHash</span></a><span class="Other">(</span><span class="Identifier">instance</span><span class="Other">:</span> <a href="sha3.html#Sha3Instance"><span class="Identifier">Sha3Instance</span></a><span class="Other">;</span> <span class="Identifier">data</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">char</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">char</span><span class="Other">]</span> {.
    <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Convenience wrapper around the standard &quot;init, update, digest&quot; sequence with a runtime selected SHA instance.
    
  </dd>
</div>
<div id="secureHash,staticSha3Instance,openArray[char]">
  <dt><pre><span class="Keyword">proc</span> <a href="#secureHash%2CstaticSha3Instance%2CopenArray%5Bchar%5D"><span class="Identifier">secureHash</span></a><span class="Other">(</span><span class="Identifier">instance</span><span class="Other">:</span> <span class="Identifier">static</span> <span class="Identifier">Sha3Instance</span><span class="Other">;</span> <span class="Identifier">data</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">char</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">auto</span></pre></dt>
  <dd>
    
    Convenience wrapper around the standard &quot;init, update, digest&quot; sequence with a statically selected SHA instance.
    
  </dd>
</div>

</div>
<div id="shakeOut-procs-all">
  <div id="shakeOut,ShakeState,openArray[char]">
  <dt><pre><span class="Keyword">proc</span> <a href="#shakeOut%2CShakeState%2CopenArray%5Bchar%5D"><span class="Identifier">shakeOut</span></a><span class="Other">(</span><span class="Identifier">state</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="sha3.html#ShakeState"><span class="Identifier">ShakeState</span></a><span class="Other">;</span> <span class="Identifier">dest</span><span class="Other">:</span> <span class="Keyword">var</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">char</span><span class="Other">]</span><span class="Other">)</span> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    <p>&quot;Shakes out&quot; a part of the variable length Shake message digest. The <tt class="docutils literal"><span class="pre"><span class="Identifier">ShakeState</span></span></tt> must be <tt class="docutils literal"><span class="pre"><span class="Identifier">finalize</span></span></tt>d before calling this procedure.</p>
<p>It can be invoked multiple times with user selectable buffer sizes. In particular, it is guaranteed that the same digest is extracted in both of the following examples, given the same <tt class="docutils literal"><span class="pre"><span class="Identifier">state</span></span></tt>:</p>
<p><pre class="listing">  <span class="Keyword">var</span> <span class="Identifier">digest</span><span class="Punctuation">:</span> <span class="Identifier">array</span><span class="Punctuation">[</span><span class="DecNumber">32</span><span class="Punctuation">,</span> <span class="Identifier">byte</span><span class="Punctuation">]</span>
  
  <span class="Identifier">state</span><span class="Operator">.</span><span class="Identifier">shakeOut</span><span class="Punctuation">(</span><span class="Identifier">digestPart</span><span class="Punctuation">)</span></pre></p>
<p><pre class="listing">  <span class="Keyword">var</span> <span class="Identifier">digestA</span><span class="Punctuation">:</span> <span class="Identifier">array</span><span class="Punctuation">[</span><span class="DecNumber">16</span><span class="Punctuation">,</span> <span class="Identifier">byte</span><span class="Punctuation">]</span>
  <span class="Keyword">var</span> <span class="Identifier">digestB</span><span class="Punctuation">:</span> <span class="Identifier">array</span><span class="Punctuation">[</span><span class="DecNumber">16</span><span class="Punctuation">,</span> <span class="Identifier">byte</span><span class="Punctuation">]</span>
  
  <span class="Identifier">state</span><span class="Operator">.</span><span class="Identifier">shakeOut</span><span class="Punctuation">(</span><span class="Identifier">digestA</span><span class="Punctuation">)</span>
  <span class="Identifier">state</span><span class="Operator">.</span><span class="Identifier">shakeOut</span><span class="Punctuation">(</span><span class="Identifier">digestB</span><span class="Punctuation">)</span></pre></p>

    
  </dd>
</div>

</div>
<div id="update-procs-all">
  <div id="update,Sha3State,openArray[char]">
  <dt><pre><span class="Keyword">proc</span> <a href="#update%2CSha3State%2CopenArray%5Bchar%5D"><span class="Identifier">update</span></a><span class="Other">(</span><span class="Identifier">state</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="sha3.html#Sha3State"><span class="Identifier">Sha3State</span></a><span class="Other">;</span> <span class="Identifier">data</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">char</span><span class="Other">]</span><span class="Other">)</span> {.<span class="Identifier">borrow</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Updates the given <tt class="docutils literal"><span class="pre"><span class="Identifier">Sha3State</span></span></tt> with the provided buffer <tt class="docutils literal"><span class="pre"><span class="Identifier">data</span></span></tt>.
    
  </dd>
</div>
<div id="update,ShakeState,openArray[char]">
  <dt><pre><span class="Keyword">proc</span> <a href="#update%2CShakeState%2CopenArray%5Bchar%5D"><span class="Identifier">update</span></a><span class="Other">(</span><span class="Identifier">state</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="sha3.html#ShakeState"><span class="Identifier">ShakeState</span></a><span class="Other">;</span> <span class="Identifier">data</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">char</span><span class="Other">]</span><span class="Other">)</span> {.<span class="Identifier">borrow</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Updates the given <tt class="docutils literal"><span class="pre"><span class="Identifier">ShakeState</span></span></tt> with the provided buffer <tt class="docutils literal"><span class="pre"><span class="Identifier">data</span></span></tt>.
    
  </dd>
</div>
<div id="update,Sha3StateStatic[instance],openArray[char]">
  <dt><pre><span class="Keyword">proc</span> <a href="#update%2CSha3StateStatic%5Binstance%5D%2CopenArray%5Bchar%5D"><span class="Identifier">update</span></a><span class="Other">[</span><span class="Identifier">instance</span><span class="Other">:</span> <span class="Identifier">static</span> <span class="Identifier">Sha3Instance</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">state</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="sha3.html#Sha3StateStatic"><span class="Identifier">Sha3StateStatic</span></a><span class="Other">[</span><span class="Identifier">instance</span><span class="Other">]</span><span class="Other">;</span>
    <span class="Identifier">data</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">char</span><span class="Other">]</span><span class="Other">)</span></pre></dt>
  <dd>
    
    Updates the given <tt class="docutils literal"><span class="pre"><span class="Identifier">Sha3StateStatic</span></span></tt> with the provided buffer <tt class="docutils literal"><span class="pre"><span class="Identifier">data</span></span></tt>.
    
  </dd>
</div>

</div>

  </dl>
</div>
<div class="section" id="19">
  <h1><a class="toc-backref" href="#19">Exports</a></h1>
  <dl class="item">
    <a href="sha_utils.html#$,array[n,char]"><span class="Identifier">$</span></a>
  </dl>
</div>

  </div>
</div>

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