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Sounds like your classpath is wrong and the Bouncy Castle jars are not in it
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It seems package org.bouncycastle.jce.provi<wbr />der &nbsp;is missing ,please look for package in your project structure naming <br />
&nbsp;org.bouncycastle.jce.provi<wbr />der.proper<wbr /> jars should be in the place (in the build path if required dependency)
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Put in classpath these two libraries:<br />
<br />
bcprov.jar<br />
bcpkix.jar
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Can't find these jar files, where can I download them ? Thx
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I have downloaded the JAR File : <a href="http://www.java2s.com/Code/Jar/b/Downloadbouncycastlejcejdk13112jar.htm" rel="ugc">http://www.java2s.com/Code/Jar/b/Downloadbouncycastlejcejdk13112jar.htm</a>&nbsp;and put it under the library of my NetBean project. However, another message prompt up.<br />
<br />
<br />
No such algorithm: DES/CRT/Nopadding. Any idea ?<br />
<br />
<br />
&nbsp; &nbsp; private void jButton9ActionPerformed(ja<wbr />va.awt.eve<wbr />nt.ActionE<wbr />vent evt) { &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <br />
&nbsp; &nbsp; &nbsp; &nbsp; <br />
&nbsp; &nbsp; &nbsp; &nbsp; try {<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Security.addProvider(new org.bouncycastle.jce.provi<wbr />der.Bouncy<wbr />CastleProv<wbr />ider());<br />
<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; input = Simple_txt.getText().getBy<wbr />tes();<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SecretKeySpec key = new SecretKeySpec(keyBytes, &quot;DES&quot;);<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; IvParameterSpec ivSpec = new IvParameterSpec(ivBytes);<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cipher = Cipher.getInstance(&quot;DES/CR<wbr />T/NoPaddin<wbr />g&quot;, &quot;BC&quot;);<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cipher.init(Cipher.ENCRYPT<wbr />_MODE, key,ivSpec);<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cipherText = new byte[cipher.getOutputSize(<wbr />input.leng<wbr />th)];<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;ctLength = cipher.update(input, 0, input.length, cipherText, 0);<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;ctLength += cipher.doFinal(cipherText,<wbr /> ctLength);<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Encrypt_txt.setText(new String(cipherText));<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;System.out.println(&quot;cipher<wbr />: &quot;&nbsp;+ new String(cipherText));<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <br />
&nbsp; &nbsp; &nbsp; &nbsp; } catch (Exception ex) {<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; JOptionPane.showMessageDia<wbr />log(null, ex);<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}<br />
&nbsp; &nbsp; &nbsp; &nbsp; <br />
&nbsp; &nbsp; }
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AXISHK

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<blockquote>
<pre><code class="code-1 nolinks" id="code-20-42694663-1"><span>Cipher.getInstance(&quot;DES/CRT/NoPadding&quot;, &quot;BC&quot;);</span>
</code></pre>
</blockquote>
<br />
What code have you got that leads you to believe that algo is possible from that provider and where did you get it?
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Thanks AXIHSK,it's nice to see its worked for you.you are most welcome.
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<div class="content wysiwyg-content">
An error in my Java code with the message &quot;package org.bouncycastle.jce.provi<wbr />der does not exist&quot;. Any idea how to fix it ? I'm using Java 8.<br />
<br />
Thx
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An error in my Java code with the message "package org.bouncycastle.jce.provider does not exist". Any idea how to fix it ? I'm using Java 8.

Thx

Error in Java program

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.