We’d like to remind Forumites to please avoid political debate on the Forum.
This is to keep it a safe and useful space for MoneySaving discussions. Threads that are – or become – political in nature may be removed in line with the Forum’s rules. Thank you for your understanding.
📨 Have you signed up to the Forum's new Email Digest yet? Get a selection of trending threads sent straight to your inbox daily, weekly or monthly!
The Forum now has a brand new text editor, adding a bunch of handy features to use when creating posts. Read more in our how-to guide
One-off fraudulent card transaction
Comments
-
I thought it was as when you do a chip and pin transaction the pin correct message comes up on the screen almost instantly
The card stores the 'public key' and the pin is the 'private key' https://en.wikipedia.org/wiki/Public-key_cryptography . The two together create an authorisation. It's an ingenious system :-)
Most terminals do authorise the PIN online though, but also cards can verify the PIN via the card.0 -
and one that you evidently completely misunderstand.
Most probably, I'm not a cryptography expert! I'm all ears for a better explanation.0
This discussion has been closed.
Confirm your email address to Create Threads and Reply
Categories
- All Categories
- 354.4K Banking & Borrowing
- 254.4K Reduce Debt & Boost Income
- 455.4K Spending & Discounts
- 247.3K Work, Benefits & Business
- 604K Mortgages, Homes & Bills
- 178.4K Life & Family
- 261.5K Travel & Transport
- 1.5M Hobbies & Leisure
- 16K Discuss & Feedback
- 37.7K Read-Only Boards