Collaborate Disseminate
We are evaluating how to improve security on our RFID System. Our system was reviewed by someone finding the point that there are duplicate Tags we must get rid of.
So the first idea was to read the UID to ensure that the used tag is not a… Continue reading RFID // Understanding security of Standard-UID
I want to protect my NFC tag against unauthorized copying.
I understand that EMV is using asymetric cryptography. My focus is on understanding of other standards (NTAG413, MIFARE DESFire) or anything else you could suggest t… Continue reading Which NFC standard prevents NFC tags from unauthorized copying?
I am trying to clone/write copies of an NFC card. I am using an ACR122U-A9 receiver and running nfc-tools on a kali linux VM.
The card I am trying to clone is identified as a Mifare Classic 1k tag
ISO/IEC 14443A (106 kbps), UID SIZE: Doub… Continue reading Identifying and cloning NFC Card double size UID – type mifare plus 7 byte 2k or classic 7 byte 1k
How would one determine what version of Mifare a system is using, if one only has access to the fob?
For example:
https://www.amazon.com/MIFARE-Blue-Key-Fobs-RFID/dp/B011PJXG0U
From the product info this cheap blue fob can … Continue reading How to tell Mifare Plus from others?
I have mifare 1k card and uid changeable card, after i wrote dump to uid card (with mfoc, acr122u reader) its wrote succesfuly but cant rewrite another dump because sector 0 get not writable, how can unlock it or how avvoid s… Continue reading mifare 1k sector 0 get not writable
You are standing in front of a building with 3 rooms and have a NXP Mifare Classic 1k card.
In the first room is a device (device1) that can do the following things:
Shows how much money is on the card.
Increase the value… Continue reading Security of RFID/NFC card Payment [on hold]
At our university we are using mifare desfire ev1 cards for payment purposes. On the card we have multiple wallets/applications. One of them is for paying food and stuff.
Unfortunately the budget of this application cannot b… Continue reading Reading encrypted value from desfire application of closed dallmayr system
I cracked a mifare 1k card and read all information.
Now, if I clone mifare 1k card and write dump to uid changeable cards, how the balance will be charged if I use cloned cards at the same time?
Continue reading Mifare 1k write dump to uid changeable card [on hold]
Why do DESFire cards and Mifare Plus cards offer a Random UID feature? What risks should it mitigate or what features should it offer?
Section in document: NXP Semiconductors N.V., Application note AN10927, MIFARE product and handling of U… Continue reading Why do DESFire and Mifare Plus cards offer a random UID feature?
I have an (university) project where I basically write and read text out of NFC Tags with Android devices in order to store one’s balance in the card (wich can be used on the cafeteria, for example).
Right now, I’m using Nta… Continue reading NFC Android (Ntag213 vs Ultralight C)