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<a href="Crypto-module.html">Package Crypto</a> ::
<a href="Crypto.Hash-module.html">Package Hash</a> ::
<a href="Crypto.Hash.SHA224-module.html">Module SHA224</a> ::
Class SHA224Hash
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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class SHA224Hash</h1><p class="nomargin-top"></p>
<pre class="base-tree">
<a href="Crypto.Hash.hashalgo.HashAlgo-class.html">hashalgo.HashAlgo</a> --+
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<strong class="uidshort">SHA224Hash</strong>
</pre>
<hr />
Class that implements a SHA-224 hash
<!-- ==================== INSTANCE METHODS ==================== -->
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="Crypto.Hash.SHA224.SHA224Hash-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">data</span>=<span class="summary-sig-default">None</span>)</span><br />
Initialize the hash object.</td>
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<td><span class="summary-sig"><a href="Crypto.Hash.SHA224.SHA224Hash-class.html#new" class="summary-sig-name">new</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">data</span>=<span class="summary-sig-default">None</span>)</span><br />
Return a fresh instance of the hash object.</td>
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> Inherited from <a href="Crypto.Hash.hashalgo.HashAlgo-class.html">hashalgo.HashAlgo</a></th></tr>
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<td><span class="summary-sig"><a href="Crypto.Hash.hashalgo.HashAlgo-class.html#copy" class="summary-sig-name">copy</a>(<span class="summary-sig-arg">self</span>)</span><br />
Return a copy ("clone") of the hash object.</td>
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<td><span class="summary-sig"><a href="Crypto.Hash.hashalgo.HashAlgo-class.html#digest" class="summary-sig-name">digest</a>(<span class="summary-sig-arg">self</span>)</span><br />
Return the <strong>binary</strong> (non-printable) digest of the message that has been hashed so far.</td>
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<td><span class="summary-sig"><a href="Crypto.Hash.hashalgo.HashAlgo-class.html#hexdigest" class="summary-sig-name">hexdigest</a>(<span class="summary-sig-arg">self</span>)</span><br />
Return the <strong>printable</strong> digest of the message that has been hashed so far.</td>
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<td><span class="summary-sig"><a href="Crypto.Hash.hashalgo.HashAlgo-class.html#update" class="summary-sig-name">update</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">data</span>)</span><br />
Continue hashing of a message by consuming the next chunk of data.</td>
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<a href="Crypto.Hash.SHA224.SHA224Hash-class.html#oid" class="summary-name">oid</a> = <code title="'\x06\t`\x86H\x01e\x03\x04\x02\x04'"><code class="variable-quote">'</code><code class="variable-string">\x06\t`\x86H\x01e\x03\x04\x02\x04</code><code class="variable-quote">'</code></code><br />
ASN.1 Object identifier (OID):
</td>
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<span class="summary-type"> </span>
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<a name="digest_size"></a><span class="summary-name">digest_size</span> = <code title="28">28</code><br />
The size of the resulting hash in bytes.
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<a name="__init__"></a>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">data</span>=<span class="sig-default">None</span>)</span>
<br /><em class="fname">(Constructor)</em>
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Initialize the hash object.
<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><strong class="pname"><code>hashFactory</code></strong> - An object that will generate the actual hash implementation.
<em>hashFactory</em> must have a <em>new()</em> method, or must be directly
callable.</li>
<li><strong class="pname"><code>data</code></strong> - The very first chunk of the message to hash.
It is equivalent to an early call to <a href="Crypto.Hash.hashalgo.HashAlgo-class.html#update" class="link">update()</a>.</li>
</ul></dd>
<dt>Overrides:
<a href="Crypto.Hash.hashalgo.HashAlgo-class.html#__init__">hashalgo.HashAlgo.__init__</a>
<dd><em class="note">(inherited documentation)</em></dd>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">new</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">data</span>=<span class="sig-default">None</span>)</span>
</h3>
</td><td align="right" valign="top"
>
</td>
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<p>Return a fresh instance of the hash object.</p>
<p>Unlike the <a href="Crypto.Hash.hashalgo.HashAlgo-class.html#copy" class="link">copy</a> method, the internal state of the object is empty.</p>
<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><strong class="pname"><code>data</code></strong> - The next chunk of the message being hashed.</li>
</ul></dd>
<dt>Returns:</dt>
<dd>A hash object of the same type</dd>
<dt>Overrides:
<a href="Crypto.Hash.hashalgo.HashAlgo-class.html#new">hashalgo.HashAlgo.new</a>
<dd><em class="note">(inherited documentation)</em></dd>
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<h3 class="epydoc">oid</h3>
<p>ASN.1 Object identifier (OID):</p>
<pre class="rst-literal-block">
id-sha224 OBJECT IDENTIFIER ::= {
joint-iso-itu-t(2) country(16) us(840) organization(1) gov(101) csor(3)
nistalgorithm(4) hashalgs(2) 4
}
</pre>
<p>This value uniquely identifies the SHA-224 algorithm.</p>
<dl class="fields">
</dl>
<dl class="fields">
<dt>Value:</dt>
<dd><table><tr><td><pre class="variable">
<code class="variable-quote">'</code><code class="variable-string">\x06\t`\x86H\x01e\x03\x04\x02\x04</code><code class="variable-quote">'</code>
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