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  1. <!DOCTYPE html>
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  33. <h1>Package md5</h1>
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  35. <!--
  36. Copyright 2009 The Go Authors. All rights reserved.
  37. Use of this source code is governed by a BSD-style
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  50. <div id="short-nav">
  51. <dl>
  52. <dd><code>import "crypto/md5"</code></dd>
  53. </dl>
  54. <dl>
  55. <dd><a href="index.html#pkg-overview" class="overviewLink">Overview</a></dd>
  56. <dd><a href="index.html#pkg-index" class="indexLink">Index</a></dd>
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  66. <h2 class="toggleButton" title="Click to hide Overview section">Overview ▾</h2>
  67. <p>
  68. Package md5 implements the MD5 hash algorithm as defined in RFC 1321.
  69. </p>
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  80. <dl>
  81. <dd><a href="index.html#pkg-constants">Constants</a></dd>
  82. <dd><a href="index.html#New">func New() hash.Hash</a></dd>
  83. <dd><a href="index.html#Sum">func Sum(data []byte) [Size]byte</a></dd>
  84. </dl>
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  87. <h4>Examples</h4>
  88. <dl>
  89. <dd><a class="exampleLink" href="index.html#example_New">New</a></dd>
  90. <dd><a class="exampleLink" href="index.html#example_Sum">Sum</a></dd>
  91. </dl>
  92. </div>
  93. <h4>Package files</h4>
  94. <p>
  95. <span style="font-size:90%">
  96. <a href="http://localhost:6060/src/crypto/md5/md5.go">md5.go</a>
  97. <a href="http://localhost:6060/src/crypto/md5/md5block.go">md5block.go</a>
  98. <a href="http://localhost:6060/src/crypto/md5/md5block_decl.go">md5block_decl.go</a>
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  108. <h2 class="toggleButton" title="Click to hide Internal Call Graph section">Internal call graph ▾</h2>
  109. <p>
  110. In the call graph viewer below, each node
  111. is a function belonging to this package
  112. and its children are the functions it
  113. calls&mdash;perhaps dynamically.
  114. </p>
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  116. The root nodes are the entry points of the
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  124. Click a node to visit that function's source code.
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  130. Functions may be omitted if they were
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  137. </div>
  138. </div> <!-- #pkg-callgraph -->
  139. <h2 id="pkg-constants">Constants</h2>
  140. <pre>const <span id="BlockSize">BlockSize</span> = 64</pre>
  141. <p>
  142. The blocksize of MD5 in bytes.
  143. </p>
  144. <pre>const <span id="Size">Size</span> = 16</pre>
  145. <p>
  146. The size of an MD5 checksum in bytes.
  147. </p>
  148. <h2 id="New">func <a href="http://localhost:6060/src/crypto/md5/md5.go?s=913:933#L41">New</a></h2>
  149. <pre>func New() <a href="../../hash/index.html">hash</a>.<a href="../../hash/index.html#Hash">Hash</a></pre>
  150. <p>
  151. New returns a new hash.Hash computing the MD5 checksum.
  152. </p>
  153. <div id="example_New" class="toggle">
  154. <div class="collapsed">
  155. <p class="exampleHeading toggleButton"><span class="text">Example</span></p>
  156. </div>
  157. <div class="expanded">
  158. <p class="exampleHeading toggleButton"><span class="text">Example</span></p>
  159. <p>Code:</p>
  160. <pre class="code">h := md5.New()
  161. io.WriteString(h, &#34;The fog is getting thicker!&#34;)
  162. io.WriteString(h, &#34;And Leon&#39;s getting laaarger!&#34;)
  163. fmt.Printf(&#34;%x&#34;, h.Sum(nil))
  164. <span class="comment"></pre>
  165. <p>Output:</p>
  166. <pre class="output">e2c569be17396eca2a2e3c11578123ed
  167. </pre>
  168. </div>
  169. </div>
  170. <h2 id="Sum">func <a href="http://localhost:6060/src/crypto/md5/md5.go?s=2244:2276#L115">Sum</a></h2>
  171. <pre>func Sum(data []<a href="../../builtin/index.html#byte">byte</a>) [<a href="index.html#Size">Size</a>]<a href="../../builtin/index.html#byte">byte</a></pre>
  172. <p>
  173. Sum returns the MD5 checksum of the data.
  174. </p>
  175. <div id="example_Sum" class="toggle">
  176. <div class="collapsed">
  177. <p class="exampleHeading toggleButton"><span class="text">Example</span></p>
  178. </div>
  179. <div class="expanded">
  180. <p class="exampleHeading toggleButton"><span class="text">Example</span></p>
  181. <p>Code:</p>
  182. <pre class="code">data := []byte(&#34;These pretzels are making me thirsty.&#34;)
  183. fmt.Printf(&#34;%x&#34;, md5.Sum(data))
  184. <span class="comment"></pre>
  185. <p>Output:</p>
  186. <pre class="output">b0804ec967f48520697662a204f5fe72
  187. </pre>
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