830 lines
16 KiB
HTML
830 lines
16 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>JSDoc: Module: crypto/cfb</title>
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<script src="scripts/prettify/prettify.js"> </script>
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<script src="scripts/prettify/lang-css.js"> </script>
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<!--[if lt IE 9]>
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<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
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<![endif]-->
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<link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css">
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<link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css">
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</head>
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<body>
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<div id="main">
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<h1 class="page-title">Module: crypto/cfb</h1>
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<section>
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<header>
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<h2>
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crypto/cfb
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</h2>
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</header>
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<article>
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<div class="container-overview">
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="cfb.js.html">crypto/cfb.js</a>, <a href="cfb.js.html#line18">line 18</a>
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</li></ul></dd>
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</dl>
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</div>
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<h3 class="subsection-title">Methods</h3>
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<dl>
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<dt>
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<h4 class="name" id="decrypt"><span class="type-signature"><static> </span>decrypt<span class="signature">(blockcipherfn, block_size, plaintext, key, resync)</span><span class="type-signature"> → {String}</span></h4>
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</dt>
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<dd>
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<div class="description">
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This function decrypts a given plaintext using the specified
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blockcipher to decrypt a message
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</div>
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<h5>Parameters:</h5>
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<table class="params">
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th class="last">Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td class="name"><code>blockcipherfn</code></td>
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<td class="type">
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<span class="param-type"><a href="global.html#openpgp_cipher_block_fn">openpgp_cipher_block_fn</a></span>
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</td>
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<td class="description last">The algorithm _encrypt_ function to encrypt
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data in one block_size encryption.</td>
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</tr>
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<tr>
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<td class="name"><code>block_size</code></td>
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<td class="type">
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<span class="param-type">Integer</span>
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</td>
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<td class="description last">the block size in bytes of the algorithm used</td>
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</tr>
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<tr>
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<td class="name"><code>plaintext</code></td>
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<td class="type">
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<span class="param-type">String</span>
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</td>
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<td class="description last">ciphertext to be decrypted provided as a string</td>
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</tr>
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<tr>
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<td class="name"><code>key</code></td>
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<td class="type">
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<span class="param-type"><a href="global.html#openpgp_byte_array">openpgp_byte_array</a></span>
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</td>
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<td class="description last">key to be used to decrypt the ciphertext. This will be passed to the
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blockcipherfn</td>
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</tr>
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<tr>
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<td class="name"><code>resync</code></td>
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<td class="type">
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<span class="param-type">Boolean</span>
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</td>
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<td class="description last">a boolean value specifying if a resync of the
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IV should be used or not. The encrypteddatapacket uses the
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"old" style with a resync. Decryption within an
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encryptedintegrityprotecteddata packet is not resyncing the IV.</td>
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</tr>
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</tbody>
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</table>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="cfb.js.html">crypto/cfb.js</a>, <a href="cfb.js.html#line200">line 200</a>
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</li></ul></dd>
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</dl>
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<h5>Returns:</h5>
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<div class="param-desc">
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a string with the plaintext data
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</div>
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<dl>
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<dt>
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Type
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</dt>
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<dd>
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<span class="param-type">String</span>
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</dd>
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</dl>
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</dd>
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<dt>
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<h4 class="name" id="encrypt"><span class="type-signature"><static> </span>encrypt<span class="signature">(prefixrandom, blockcipherfn, block_size, plaintext, key, resync)</span><span class="type-signature"> → {String}</span></h4>
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</dt>
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<dd>
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<div class="description">
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This function encrypts a given with the specified prefixrandom
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using the specified blockcipher to encrypt a message
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</div>
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<h5>Parameters:</h5>
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<table class="params">
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th class="last">Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td class="name"><code>prefixrandom</code></td>
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<td class="type">
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<span class="param-type">String</span>
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</td>
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<td class="description last">random bytes of block_size length provided
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as a string to be used in prefixing the data</td>
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</tr>
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<tr>
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<td class="name"><code>blockcipherfn</code></td>
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<td class="type">
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<span class="param-type"><a href="global.html#openpgp_cipher_block_fn">openpgp_cipher_block_fn</a></span>
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</td>
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<td class="description last">the algorithm encrypt function to encrypt
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data in one block_size encryption.</td>
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</tr>
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<tr>
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<td class="name"><code>block_size</code></td>
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<td class="type">
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<span class="param-type">Integer</span>
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</td>
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<td class="description last">the block size in bytes of the algorithm used</td>
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</tr>
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<tr>
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<td class="name"><code>plaintext</code></td>
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<td class="type">
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<span class="param-type">String</span>
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</td>
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<td class="description last">data to be encrypted provided as a string</td>
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</tr>
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<tr>
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<td class="name"><code>key</code></td>
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<td class="type">
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<span class="param-type"><a href="global.html#openpgp_byte_array">openpgp_byte_array</a></span>
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</td>
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<td class="description last">key to be used to encrypt the data. This will be passed to the
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blockcipherfn</td>
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</tr>
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<tr>
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<td class="name"><code>resync</code></td>
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<td class="type">
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<span class="param-type">Boolean</span>
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</td>
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<td class="description last">a boolean value specifying if a resync of the
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IV should be used or not. The encrypteddatapacket uses the
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"old" style with a resync. Encryption within an
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encryptedintegrityprotecteddata packet is not resyncing the IV.</td>
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</tr>
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</tbody>
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</table>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="cfb.js.html">crypto/cfb.js</a>, <a href="cfb.js.html#line57">line 57</a>
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</li></ul></dd>
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</dl>
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<h5>Returns:</h5>
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<div class="param-desc">
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a string with the encrypted data
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</div>
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<dl>
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<dt>
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Type
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</dt>
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<dd>
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<span class="param-type">String</span>
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</dd>
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</dl>
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</dd>
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<dt>
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<h4 class="name" id="mdc"><span class="type-signature"><static> </span>mdc<span class="signature">(block_size, key, ciphertext)</span><span class="type-signature"> → {String}</span></h4>
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</dt>
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<dd>
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<div class="description">
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Decrypts the prefixed data for the Modification Detection Code (MDC) computation
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</div>
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<h5>Parameters:</h5>
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<table class="params">
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th class="last">Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td class="name"><code>cipherfn.encrypt</code></td>
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<td class="type">
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<span class="param-type">openpgp_block_cipher_fn</span>
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</td>
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<td class="description last">Cipher function to use</td>
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</tr>
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<tr>
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<td class="name"><code>block_size</code></td>
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<td class="type">
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<span class="param-type">Integer</span>
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</td>
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<td class="description last">Blocksize of the algorithm</td>
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</tr>
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<tr>
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<td class="name"><code>key</code></td>
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<td class="type">
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<span class="param-type"><a href="global.html#openpgp_byte_array">openpgp_byte_array</a></span>
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</td>
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<td class="description last">The key for encryption</td>
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</tr>
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<tr>
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<td class="name"><code>ciphertext</code></td>
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<td class="type">
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<span class="param-type">String</span>
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</td>
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<td class="description last">The encrypted data</td>
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</tr>
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</tbody>
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</table>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="cfb.js.html">crypto/cfb.js</a>, <a href="cfb.js.html#line160">line 160</a>
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</li></ul></dd>
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</dl>
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<h5>Returns:</h5>
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<div class="param-desc">
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plaintext Data of D(ciphertext) with blocksize length +2
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</div>
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<dl>
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<dt>
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Type
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</dt>
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<dd>
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<span class="param-type">String</span>
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</dd>
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</dl>
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</dd>
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</dl>
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</article>
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</section>
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</div>
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<nav>
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