3 ms·
Nope. The PIN-block encryption scheme† is specifically designed to be secure against replay attacks. The same PIN will encrypt to a different PIN-block each tim
by cynwoody 13y ago
Nope. The PIN-block encryption scheme† is specifically designed to be secure against replay attacks. The same PIN will encrypt to a different PIN-block each time it's entered whether at the same POS terminal or a different one.
†http://en.wikipedia.org/wiki/Derived_unique_key_per_transaction http://en.wikipedia.org/wiki/Derived_unique_key_per_transact...