How to Cheat at Deploying and Securing RFID

Securing RFID Data Using Middleware

The following sections examine two methods to secure RFID datastreams within the enterprise. We begin by examining the 96-bit Passive RFID Data Construct

Table 14.2: RFID Data Construct

Header

Filter

DODAAC/CAGE

Serial Number

8 bits

4 bits

48 bits

36 bits

Fields:

  • Header Specifies that the tag data is encoded as a Dial on Demand (DoD) 96-bit tag construct, using binary number: 1100 1111

  • Filter Identifies a pallet, case, or EPC item associated with a tag, represented in binary number format using the following values:

    • 0000 = pallet

    • 0001 = case

    • 0010 = EPC item

    • All other combinations = reserved for future use.

  • DODAAC/CAGE Identifies the supplier and ensures uniqueness of serial number across all suppliers represented in American Standard Code for Information Interchange (ASCII) format.

  • Serial Number Uniquely identifies up to 2 36 = 68,719,476,736 tagged items, represented in binary number format.

Binary encoding of the fields of a 96-bit Class 1 tag on a pallet shipped from DoD internal supply node.

Table 14.3: DoD Internal Supply Node

Header (DoD construct)

1100 1111

Filter

(Pallet)

0000

DODAAC

(ZA18D3)

0101 1010 0100 0001 0011 0001 0011 1000

0100 0100 0011 0011

Serial Number

0010 1101 1111 1101 1100 0001 1100 0011

(12,345,678,901)

0101

Complete content string of the above encoded sample pallet tag is as follows:

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