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<link title="Cryptokit" rel="Chapter" href="Cryptokit.html"><title>Cryptokit.Stream.stream_cipher</title>
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<center><h1>Class type <a href="type_Cryptokit.Stream.stream_cipher.html">Cryptokit.Stream.stream_cipher</a></h1></center>
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<pre><span class="keyword">class type</span> <a name="TYPEstream_cipher"></a>stream_cipher = <code class="code">object</code> <a href="Cryptokit.Stream.stream_cipher.html">..</a> <code class="code">end</code></pre>Abstract interface for a stream cipher.<br>
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<pre><span class="keyword">method</span> <a name="METHODtransform"></a>transform : <code class="type">string -> int -> string -> int -> int -> unit</code></pre><div class="info">
<code class="code">transform src spos dst dpos len</code> encrypts or decrypts
<code class="code">len</code> characters, read from string <code class="code">src</code> starting at
position <code class="code">spos</code>. The resulting <code class="code">len</code> characters are
stored in string <code class="code">dst</code> starting at position <code class="code">dpos</code>.<br>
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<pre><span class="keyword">method</span> <a name="METHODwipe"></a>wipe : <code class="type">unit</code></pre><div class="info">
Erase the internal state of the stream cipher, such as
all key-dependent material.<br>
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