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Password length requirement (feddit.org)

submitted 3 months ago* (last edited 3 months ago) by [email protected] to c/[email protected]

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Last week, I tried to register for a service and was really surprised by a password limit of 16 characters. Why on earth yould you impose such strict limits? Never heard of correct horse battery staple?

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[–] [email protected] 2 points 3 months ago* (last edited 3 months ago) (1 children)

Even if you could you can’t recover the PIN from it. Since it’s not stored on the card, the chip checks the entered PIN against a secret key with cryptographic calculations if it is correct. But you can’t get the PIN from that secret key. Also if I remember correctly the chip will self destruct, as in wipes it’s data, when it detects that it’s being tampered with.

[–] [email protected] 1 points 3 months ago

Good to know!