Timeline for Hashing a credit card number for use as a fingerprint
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
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| Jul 18, 2014 at 14:13 | history | edited | Damon | CC BY-SA 3.0 |
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| Jul 18, 2014 at 14:08 | history | edited | Damon | CC BY-SA 3.0 |
added 4859 characters in body
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| Jul 17, 2014 at 21:56 | comment | added | Ben Voigt | This is an absolutely terrible approach. Sure you cannot recover 39 bits from a CRC-32. But the space you need to brute-force is reduced to 7 bits :( It doesn't matter how large your cryptographic hash is, anything larger than the input space isn't expanding the search. | |
| Jul 17, 2014 at 13:48 | history | edited | Damon | CC BY-SA 3.0 |
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| Jul 17, 2014 at 13:46 | comment | added | FloatingRock | Thanks Damon. Just to clarify, RE: (only a query of the type "did this particular person use that number before" would be possible). If I'm a merchant using Stripe, I don't care if the card was used with another merchant or not. The scope would be limited to the cards used on one particular merchant (i.e. Me). | |
| Jul 17, 2014 at 13:38 | history | answered | Damon | CC BY-SA 3.0 |