From: "Ryan S." <lists@...>
Date: 2013-05-21T00:51:01+09:00
Subject: Re: why first 16 bytes are wrong with ruby openssl aes 128 cbc ?

Hello David,

If I understand you correctly, this seems to be caused by what is 
outlined here:

http://www.ruby-doc.org/stdlib-2.0/libdoc/openssl/rdoc/OpenSSL/Cipher.html

Under the section "auth_tag([ tag_len ] → string"

It looks like this is happening because you didn't invoke tag_len.

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