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Date: Mon, 8 Oct 2012 15:48:43 +0200
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Subject: Can someone help with the AES cipher
From: James Coglan <jcog...@gmail.com>
To: Node list <nodejs@googlegroups.com>
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Hi all,

I'm trying to implement a crypto system, and want to make sure I'm doing
something portable, i.e. the ciphertexts I generate can be understood by
any language with openssl functionality. I have a Ruby program that uses
AES-256-CBC to encrypt some data, and I want to make sure I can generate
the same ciphertext using Node.

What mode of operation does crypto.createCipher('aes256') use? I assume
it's not a bare AES function since it can encrypt arbitrary amounts of
data, so it must be using a construction like CBC or CTR. Which one does it
use, and can it be changed by the user?

-- 
James Coglan
http://jcoglan.com
+44 (0) 7771512510

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Hi all,<div><br></div><div>I&#39;m trying to implement a crypto system, and=
 want to make sure I&#39;m doing something portable, i.e. the ciphertexts I=
 generate can be understood by any language with openssl functionality. I h=
ave a Ruby program that uses AES-256-CBC to encrypt some data, and I want t=
o make sure I can generate the same ciphertext using Node.</div>
<div><br></div><div>What mode of operation does crypto.createCipher(&#39;ae=
s256&#39;) use? I assume it&#39;s not a bare AES function since it can encr=
ypt arbitrary amounts of data, so it must be using a construction like CBC =
or CTR. Which one does it use, and can it be changed by the user?<br clear=
=3D"all">
<div><br></div>-- <br>James Coglan<br><a href=3D"http://jcoglan.com">http:/=
/jcoglan.com</a><br>+44 (0) 7771512510<br>
</div>

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