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diff --git a/old/api/2.6/Crypto.Cipher.ARC2-module.html b/old/api/2.6/Crypto.Cipher.ARC2-module.html new file mode 100644 index 0000000..2906358 --- /dev/null +++ b/old/api/2.6/Crypto.Cipher.ARC2-module.html @@ -0,0 +1,322 @@ +<?xml version="1.0" encoding="ascii"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" + "DTD/xhtml1-transitional.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> +<head> + <title>Crypto.Cipher.ARC2</title> + <link rel="stylesheet" href="epydoc.css" type="text/css" /> + <script type="text/javascript" src="epydoc.js"></script> +</head> + +<body bgcolor="white" text="black" link="blue" vlink="#204080" + alink="#204080"> +<!-- ==================== NAVIGATION BAR ==================== --> +<table class="navbar" border="0" width="100%" cellpadding="0" + bgcolor="#a0c0ff" cellspacing="0"> + <tr valign="middle"> + <!-- Home link --> + <th> <a + href="Crypto-module.html">Home</a> </th> + + <!-- Tree link --> + <th> <a + href="module-tree.html">Trees</a> </th> + + <!-- Index link --> + <th> <a + href="identifier-index.html">Indices</a> </th> + + <!-- Help link --> + <th> <a + href="help.html">Help</a> </th> + + <!-- Project homepage --> + <th class="navbar" align="right" width="100%"> + <table border="0" cellpadding="0" cellspacing="0"> + <tr><th class="navbar" align="center" + ><a href="http://www.pycrypto.org/">PyCrypto.org</a></th> + </tr></table></th> + </tr> +</table> +<table width="100%" cellpadding="0" cellspacing="0"> + <tr valign="top"> + <td width="100%"> + <span class="breadcrumbs"> + <a href="Crypto-module.html">Package Crypto</a> :: + <a href="Crypto.Cipher-module.html">Package Cipher</a> :: + Module ARC2 + </span> + </td> + <td> + <table cellpadding="0" cellspacing="0"> + <!-- hide/show private --> + <tr><td align="right"><span class="options" + >[<a href="frames.html" target="_top">frames</a + >] | <a href="Crypto.Cipher.ARC2-module.html" + target="_top">no frames</a>]</span></td></tr> + </table> + </td> + </tr> +</table> +<!-- ==================== MODULE DESCRIPTION ==================== --> +<h1 class="epydoc">Module ARC2</h1><p class="nomargin-top"></p> +<p>RC2 symmetric cipher</p> +<p><a class="rst-reference external" href="http://en.wikipedia.org/wiki/RC2" target="_top">RC2</a> (Rivest's Cipher version 2) is a symmetric block cipher designed +by Ron Rivest in 1987. The cipher started as a proprietary design, +that was reverse engineered and anonymously posted on Usenet in 1996. +For this reason, the algorithm was first called <em>Alleged</em> RC2 (ARC2), +since the company that owned RC2 (RSA Data Inc.) did not confirm whether +the details leaked into public domain were really correct.</p> +<p>The company eventually published its full specification in <a class="rst-reference external" href="http://tools.ietf.org/html/rfc2268" target="_top">RFC2268</a>.</p> +<p>RC2 has a fixed data block size of 8 bytes. Length of its keys can vary from +8 to 128 bits. One particular property of RC2 is that the actual +cryptographic strength of the key (<em>effective key length</em>) can be reduced +via a parameter.</p> +<p>Even though RC2 is not cryptographically broken, it has not been analyzed as +thoroughly as AES, which is also faster than RC2.</p> +<p>New designs should not use RC2.</p> +<p>As an example, encryption can be done as follows:</p> +<blockquote> +<pre class="py-doctest"> +<span class="py-prompt">>>> </span><span class="py-keyword">from</span> Crypto.Cipher <span class="py-keyword">import</span> ARC2 +<span class="py-prompt">>>> </span><span class="py-keyword">from</span> Crypto <span class="py-keyword">import</span> Random +<span class="py-prompt">>>></span> +<span class="py-prompt">>>> </span>key = b<span class="py-string">'Sixteen byte key'</span> +<span class="py-prompt">>>> </span>iv = Random.new().read(ARC2.block_size) +<span class="py-prompt">>>> </span>cipher = ARC2.new(key, ARC2.MODE_CFB, iv) +<span class="py-prompt">>>> </span>msg = iv + cipher.encrypt(b<span class="py-string">'Attack at dawn'</span>)</pre> +</blockquote> + +<!-- ==================== CLASSES ==================== --> +<a name="section-Classes"></a> +<table class="summary" border="1" cellpadding="3" + cellspacing="0" width="100%" bgcolor="white"> +<tr bgcolor="#70b0f0" class="table-header"> + <td align="left" colspan="2" class="table-header"> + <span class="table-header">Classes</span></td> +</tr> +<tr> + <td width="15%" align="right" valign="top" class="summary"> + <span class="summary-type"> </span> + </td><td class="summary"> + <a href="Crypto.Cipher.ARC2.RC2Cipher-class.html" class="summary-name">RC2Cipher</a><br /> + RC2 cipher object + </td> + </tr> +</table> +<!-- ==================== FUNCTIONS ==================== --> +<a name="section-Functions"></a> +<table class="summary" border="1" cellpadding="3" + cellspacing="0" width="100%" bgcolor="white"> +<tr bgcolor="#70b0f0" class="table-header"> + <td align="left" colspan="2" class="table-header"> + <span class="table-header">Functions</span></td> +</tr> +<tr> + <td width="15%" align="right" valign="top" class="summary"> + <span class="summary-type"> </span> + </td><td class="summary"> + <table width="100%" cellpadding="0" cellspacing="0" border="0"> + <tr> + <td><span class="summary-sig"><a href="Crypto.Cipher.ARC2-module.html#new" class="summary-sig-name">new</a>(<span class="summary-sig-arg">key</span>, + <span class="summary-sig-arg">*args</span>, + <span class="summary-sig-arg">**kwargs</span>)</span><br /> + Create a new RC2 cipher</td> + <td align="right" valign="top"> + + + </td> + </tr> + </table> + + </td> + </tr> +</table> +<!-- ==================== VARIABLES ==================== --> +<a name="section-Variables"></a> +<table class="summary" border="1" cellpadding="3" + cellspacing="0" width="100%" bgcolor="white"> +<tr bgcolor="#70b0f0" class="table-header"> + <td align="left" colspan="2" class="table-header"> + <span class="table-header">Variables</span></td> +</tr> +<tr> + <td width="15%" align="right" valign="top" class="summary"> + <span class="summary-type"> </span> + </td><td class="summary"> + <a name="MODE_ECB"></a><span class="summary-name">MODE_ECB</span> = <code title="1">1</code><br /> + Electronic Code Book (ECB). See <a href="Crypto.Cipher.blockalgo-module.html#MODE_ECB" class="link">blockalgo.MODE_ECB</a>. + </td> + </tr> +<tr> + <td width="15%" align="right" valign="top" class="summary"> + <span class="summary-type"> </span> + </td><td class="summary"> + <a name="MODE_CBC"></a><span class="summary-name">MODE_CBC</span> = <code title="2">2</code><br /> + Cipher-Block Chaining (CBC). See <a href="Crypto.Cipher.blockalgo-module.html#MODE_CBC" class="link">blockalgo.MODE_CBC</a>. + </td> + </tr> +<tr> + <td width="15%" align="right" valign="top" class="summary"> + <span class="summary-type"> </span> + </td><td class="summary"> + <a name="MODE_CFB"></a><span class="summary-name">MODE_CFB</span> = <code title="3">3</code><br /> + Cipher FeedBack (CFB). See <a href="Crypto.Cipher.blockalgo-module.html#MODE_CFB" class="link">blockalgo.MODE_CFB</a>. + </td> + </tr> +<tr> + <td width="15%" align="right" valign="top" class="summary"> + <span class="summary-type"> </span> + </td><td class="summary"> + <a name="MODE_PGP"></a><span class="summary-name">MODE_PGP</span> = <code title="4">4</code><br /> + This mode should not be used. + </td> + </tr> +<tr> + <td width="15%" align="right" valign="top" class="summary"> + <span class="summary-type"> </span> + </td><td class="summary"> + <a name="MODE_OFB"></a><span class="summary-name">MODE_OFB</span> = <code title="5">5</code><br /> + Output FeedBack (OFB). See <a href="Crypto.Cipher.blockalgo-module.html#MODE_OFB" class="link">blockalgo.MODE_OFB</a>. + </td> + </tr> +<tr> + <td width="15%" align="right" valign="top" class="summary"> + <span class="summary-type"> </span> + </td><td class="summary"> + <a name="MODE_CTR"></a><span class="summary-name">MODE_CTR</span> = <code title="6">6</code><br /> + CounTer Mode (CTR). See <a href="Crypto.Cipher.blockalgo-module.html#MODE_CTR" class="link">blockalgo.MODE_CTR</a>. + </td> + </tr> +<tr> + <td width="15%" align="right" valign="top" class="summary"> + <span class="summary-type"> </span> + </td><td class="summary"> + <a name="MODE_OPENPGP"></a><span class="summary-name">MODE_OPENPGP</span> = <code title="7">7</code><br /> + OpenPGP Mode. See <a href="Crypto.Cipher.blockalgo-module.html#MODE_OPENPGP" class="link">blockalgo.MODE_OPENPGP</a>. + </td> + </tr> +<tr> + <td width="15%" align="right" valign="top" class="summary"> + <span class="summary-type"> </span> + </td><td class="summary"> + <a name="block_size"></a><span class="summary-name">block_size</span> = <code title="8">8</code><br /> + Size of a data block (in bytes) + </td> + </tr> +<tr> + <td width="15%" align="right" valign="top" class="summary"> + <span class="summary-type"> </span> + </td><td class="summary"> + <a name="key_size"></a><span class="summary-name">key_size</span> = <code title="xrange(1, 17)">xrange(1, 17)</code><br /> + Size of a key (in bytes) + </td> + </tr> +</table> +<!-- ==================== FUNCTION DETAILS ==================== --> +<a name="section-FunctionDetails"></a> +<table class="details" border="1" cellpadding="3" + cellspacing="0" width="100%" bgcolor="white"> +<tr bgcolor="#70b0f0" class="table-header"> + <td align="left" colspan="2" class="table-header"> + <span class="table-header">Function Details</span></td> +</tr> +</table> +<a name="new"></a> +<div> +<table class="details" border="1" cellpadding="3" + cellspacing="0" width="100%" bgcolor="white"> +<tr><td> + <table width="100%" cellpadding="0" cellspacing="0" border="0"> + <tr valign="top"><td> + <h3 class="epydoc"><span class="sig"><span class="sig-name">new</span>(<span class="sig-arg">key</span>, + <span class="sig-arg">*args</span>, + <span class="sig-arg">**kwargs</span>)</span> + </h3> + </td><td align="right" valign="top" + > + </td> + </tr></table> + + Create a new RC2 cipher + <dl class="fields"> + <dt>Parameters:</dt> + <dd><ul class="nomargin-top"> + <li><strong class="pname"><code>key</code></strong> (byte string) - The secret key to use in the symmetric cipher. +Its length can vary from 1 to 128 bytes.</li> + <li><strong class="pname"><code>mode</code></strong> (a <em>MODE_*</em> constant) - The chaining mode to use for encryption or decryption. +Default is <a href="Crypto.Cipher.ARC2-module.html#MODE_ECB" class="link">MODE_ECB</a>.</li> + <li><p><strong class="pname"><code>IV</code></strong> (byte string) - The initialization vector to use for encryption or decryption.</p> +<p>It is ignored for <a href="Crypto.Cipher.ARC2-module.html#MODE_ECB" class="link">MODE_ECB</a> and <a href="Crypto.Cipher.ARC2-module.html#MODE_CTR" class="link">MODE_CTR</a>.</p> +<p>For <a href="Crypto.Cipher.ARC2-module.html#MODE_OPENPGP" class="link">MODE_OPENPGP</a>, IV must be <a href="Crypto.Cipher.ARC2-module.html#block_size" class="link">block_size</a> bytes long for encryption +and <a href="Crypto.Cipher.ARC2-module.html#block_size" class="link">block_size</a> +2 bytes for decryption (in the latter case, it is +actually the <em>encrypted</em> IV which was prefixed to the ciphertext). +It is mandatory.</p> +<p>For all other modes, it must be <a href="Crypto.Cipher.ARC2-module.html#block_size" class="link">block_size</a> bytes longs. It is optional and +when not present it will be given a default value of all zeroes.</p></li> + <li><strong class="pname"><code>counter</code></strong> (callable) - (<em>Only</em> <a href="Crypto.Cipher.ARC2-module.html#MODE_CTR" class="link">MODE_CTR</a>). A stateful function that returns the next +<em>counter block</em>, which is a byte string of <a href="Crypto.Cipher.ARC2-module.html#block_size" class="link">block_size</a> bytes. +For better performance, use <a href="Crypto.Util.Counter-module.html" class="link" onclick="show_private();">Crypto.Util.Counter</a>.</li> + <li><strong class="pname"><code>segment_size</code></strong> (integer) - (<em>Only</em> <a href="Crypto.Cipher.ARC2-module.html#MODE_CFB" class="link">MODE_CFB</a>).The number of bits the plaintext and ciphertext +are segmented in. +It must be a multiple of 8. If 0 or not specified, it will be assumed to be 8.</li> + <li><strong class="pname"><code>effective_keylen</code></strong> (integer) - Maximum cryptographic strength of the key, in bits. +It can vary from 0 to 1024. The default value is 1024.</li> + </ul></dd> + <dt>Returns:</dt> + <dd>an <a href="Crypto.Cipher.ARC2.RC2Cipher-class.html" class="link">RC2Cipher</a> object</dd> + </dl> +</td></tr></table> +</div> +<br /> +<!-- ==================== NAVIGATION BAR ==================== --> +<table class="navbar" border="0" width="100%" cellpadding="0" + bgcolor="#a0c0ff" cellspacing="0"> + <tr valign="middle"> + <!-- Home link --> + <th> <a + href="Crypto-module.html">Home</a> </th> + + <!-- Tree link --> + <th> <a + href="module-tree.html">Trees</a> </th> + + <!-- Index link --> + <th> <a + href="identifier-index.html">Indices</a> </th> + + <!-- Help link --> + <th> <a + href="help.html">Help</a> </th> + + <!-- Project homepage --> + <th class="navbar" align="right" width="100%"> + <table border="0" cellpadding="0" cellspacing="0"> + <tr><th class="navbar" align="center" + ><a href="http://www.pycrypto.org/">PyCrypto.org</a></th> + </tr></table></th> + </tr> +</table> +<table border="0" cellpadding="0" cellspacing="0" width="100%%"> + <tr> + <td align="left" class="footer"> + Generated by Epydoc 3.0.1 on Thu May 24 09:02:36 2012 + </td> + <td align="right" class="footer"> + <a target="mainFrame" href="http://epydoc.sourceforge.net" + >http://epydoc.sourceforge.net</a> + </td> + </tr> +</table> + +<script type="text/javascript"> + <!-- + // Private objects are initially displayed (because if + // javascript is turned off then we want them to be + // visible); but by default, we want to hide them. 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