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If they used encryption properly (random or unique IV depending on cipher mode of operation), you can't bruteforce credit card numbers (encrypted content), you
by dchest 14y ago
If they used encryption properly (random or unique IV depending on cipher mode of operation), you can't bruteforce credit card numbers (encrypted content), you can only try to bruteforce the key used for encryption.
See http://en.wikipedia.org/wiki/Semantic_security http://en.wikipedia.org/wiki/Semantic_security and http://en.wikipedia.org/wiki/Ciphertext_indistinguishability http://en.wikipedia.org/wiki/Ciphertext_indistinguishability
- zhoutong 14y agoRight. I guess I had confused it with hashing. If the credit cards were hashed then it would be relatively easy to crack. Edited my comment. Thanks!