This is a tiny tool to perform an EMV transaction, used during my talk
at 29c3.

# Prerequisites

This only works with Ruby 1.8.

you'll need to install the following gems:

* smartcard (https://github.com/costan/smartcard)
* tlv (https://github.com/a2800276/tlv/)
* hexy (https://github.com/a2800276/hexy)

# Usage

irb --noinspect smartshell.rb

# Limitations

Currently the implementation is geared toward my talk, it's only meant
to get started. The only CA key installed is for the demo card I'm using
during my talk. I also cheated a bit and don't actually decipher the
Issuer Key from the data provided in the card, so the certificate
extraction remains to be implemented as does data analysis, DDA, CDA,
encrypted PIN and almost everything else. THIS IS JUST FOR FUN and
shouldn't be used for any other purpose.

# License (Simplified BSD)

Copyright (c) 2012, Tim Becker
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met: 

1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer. 

2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution. 

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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