<div>
&gt;where secretKey contains 256 bytes.<br />
<br />
Bits?<br />
<br />
Think 128 might be the limit.
</div>


>where secretKey contains 256 bytes.

Bits?

Think 128 might be the limit.

<div>
<a href="http://docs.oracle.com/javase/7/docs/technotes/guides/security/SunProviders.html#importlimits" rel="ugc">http://docs.oracle.com/javase/7/docs/technotes/guides/security/SunProviders.html#importlimits</a>
</div>


http://docs.oracle.com/javase/7/docs/technotes/guides/security/SunProviders.html#importlimits [http://docs.oracle.com/javase/7/docs/technotes/guides/security/SunProviders.html#importlimits]

<div>
Turns out I had pulled the wrong version of JCE.
</div>


Turns out I had pulled the wrong version of JCE.

<div>
So the limit was 128-bit, correct?
</div>


<div>
<div class="content wysiwyg-content">
Hey guys,<br />
<br />
I'm running into some trouble loading a key into a cipher to encrypt some strings. &nbsp;Below is the line of code that's causing an issue.<br />
<br />
Cipher cipher = Cipher.getInstance(&quot;AES&quot;);<wbr /><br />
cipher.init(Cipher.ENCRYPT<wbr />_MODE, secretKey);<br />
<br />
where secretKey contains 256 bytes.<br />
<br />
I'm getting a java.security.InvalidKeyEx<wbr />ception: Illegal key size or default parameters.<br />
<br />
I've scoured the internet and have come to believe this is an environment issue - I'm assuming I need to install JCE (Java Cryptography Extensions), but am running out of luck getting anything to work (most of the better documentation are around 8 years old).<br />
<br />
I'll start off by saying I have Eclipse Standard/SDK installed, Version Kepler Service Release 1. &nbsp;Are there any set up gurus out there that could assist me in resolving this issue?
</div>
</div>


Hey guys,

I'm running into some trouble loading a key into a cipher to encrypt some strings.  Below is the line of code that's causing an issue.

Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, secretKey);

where secretKey contains 256 bytes.

I'm getting a java.security.InvalidKeyException: Illegal key size or default parameters.

I've scoured the internet and have come to believe this is an environment issue - I'm assuming I need to install JCE (Java Cryptography Extensions), but am running out of luck getting anything to work (most of the better documentation are around 8 years old).

I'll start off by saying I have Eclipse Standard/SDK installed, Version Kepler Service Release 1.  Are there any set up gurus out there that could assist me in resolving this issue?

Java crypto - Illegal key size or default parameters

Encryption is the process of encoding messages or information in such a way that only authorized parties can read it. In an encryption scheme, the intended communication information or message, referred to as plaintext, is encrypted using an encryption algorithm, generating ciphertext that can only be read if decrypted. For technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm. An authorized recipient can easily decrypt the message with the key provided by the originator to recipients, but not to unauthorized interceptors.

Encryption

Development in most programming languages is frequently done with an editor or integrated development environment (IDE). An IDE is a software application that provide comprehensive facilities to computer programmers for software development. An IDE normally consists of a source code editor, build automation tools and a debugger. XCode, Visual Studio, Adobe Dreamweaver and Eclipse are some of the more popular development tools, but an editor or IDE can be anything from simple text editors to sophisticated programs. Related topics: All programming and development language, database and web based content management systems topics

Editors IDEs

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.