sgzeng / hack-in-the-card-two

2017 XCTF Singapore crypto challenge

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The second smart card sent to us has been added some countermeasures by that evil company. They also changed the public key. However it seems that they missed something...... Can you decrypt the following hex-encoded ciphertext this time?

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2017 XCTF Singapore crypto challenge


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