MIFARE DESFire EV1 4K keyfob - thin, green


MIFARE DESFire EV1 4K keyfob - thin, green
Availability: In stock
£  2.73
(£  3.28 inc VAT)
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A green 45mm x 30mm x 2.2mm keyfob containing a MIFARE DESFire EV1 4K chip. This extremely durable, 100% waterproof thin keyfob is designed to be attached directly to a keyring. A useful alternative for contactless systems, it operates at 13.56 MHz wireless frequency, according to the ISO 14443A standard with the transport protocol complying to the ISO 14443-4 standard.

The MIFARE DESFire EV1 4K keyfob contains 4K bytes of non-volatile memory, a high speed triple-DES data encryption co-processor, a flexible memory organization structure, a mutual 3-pass authentication technique together with a true random number generator and an anti-tear mechanism to guarantee data integrity during contactless transactions.

MIFARE DESFire keyfobs typically operate at a distance of up to 10cm depending on the power provided by the reader.

This keyfob is NFC forum type 4 compliant.

MIFARE DESFire cards & tags



Technical Specifications:
Product FeaturesMIFARE DESFire 4kMIFARE DESFire 8k
Memory
EEPROM size [byte]40968192
Write Endurance [cycles]500 000500 000
Data Retention [yrs]1010
Organizationflexible file systemflexible file system
RF-Interface
Acc. to ISO 14443Ayes - up to layer 4yes - up to layer 4
Frequency [MHz]13.5613.56
Baudrate [kbit/s]106 … 848106 … 848
Anticollisionbit-wisebit-wise
Operating Distance [mm]up to 100up to 100
Security
Unique Serial Number [byte]7, cascaded7, cascaded
Random Number Generatoryesyes
Access Keys14 keys per application14 keys per application
Access Conditionsper fileper file
DES & DES3 SecurityMACing / EnciphermentMACing / Encipherment
AES SecurityMACing / EnciphermentMACing / Encipherment
Anti-tear supported by chipyesyes
Special Features
Multi-application28 applications, MAD328 applications, MAD3
Purse FunctionalityValue fileValue file
Secure Transport Transaction512 byte read, 128 byte write512 byte read, 128 byte write
Transaction Time [ms]8989


Typical applications include:
  • Transport
  • Access control
  • Loyalty
  • Internet applications
A picture of the MIFARE DESFire EV 4k thin keyfob is shown below.

Manufacturer: NXP

MIFARE DESFire cards & tags
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