# US 2014/0208121 A1 · Near field communication (nfc) device and method for selectively securing records in a near field communication data exchange format (ndef) message

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- Number: US 2014/0208121 A1
- Document ID: US20140208121A1
- Status: Published application
- Kind: A1
- Application number: 14/224,777
- Filed: 2014-03-25
- Published: 2014-07-24
- Earliest claimed: 2008-07-09
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Thenmozhi ARUNAN; Eun-Tae WON
- Web page: https://patentgrep.com/patent/US20140208121A1

## CPC

- G06K 7/10297: {arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092 (cryptographic protocols H04L9/00; network security protocols H04L63/00; real-time communication protocols in data switching networks H04L65/00; network protocols for data switching network services H04L67/00)}
- H04B 5/20: characterised by the transmission technique; characterised by the transmission medium
- H04L 9/3247: {involving digital signatures}
- H04W 12/106: Packet or message integrity
- H04L 63/12: {Applying verification of the received information (cryptographic mechanisms or cryptographic arrangements for data integrity or data verification H04L9/32)}
- H04L 2209/68: Special signature format, e.g. XML format
- H04L 2209/72: Signcrypting, i.e. digital signing and encrypting simultaneously
- H04L 2209/805: Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor
- H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A method and apparatus for selectively securing records in a Near Field Communication Data Exchange Format (NDEF) message in a Near Field Communication (NFC) device are provided. The method includes generating a place marker signature record by setting a URI_present field to ‘0’ and setting a signature_type field to a predefined value, wherein a combination of the URI_present field set to ‘0’ and the signature_type field set to the predefined value indicates that a signature Record Type Definition (RTD) is a place marker signature record; and placing the place marker signature record in the NDEF message, wherein a set of records following the place marker signature record are secured.

## Claims

### Claim 1

A method for selectively securing records in a Near Field Communication Data Exchange Format (NDEF) message in a Near Field Communication (NFC) device, the method comprising:
generating a place marker signature record by setting a URI_present field to ‘0’ and setting a signature_type field to a predefined value, wherein a combination of the URI_present field set to ‘0’ and the signature_type field set to the predefined value indicates that a signature Record Type Definition (RTD) is a place marker signature record; and
placing the place marker signature record in the NDEF message, wherein a set of records following the place marker signature record is secured.

### Claim 2 (depends on 1)

The method of claim 1, wherein the NDEF message includes an unsecured first set of records spanning from a beginning of the NDEF message to the place marker signature record.

### Claim 3 (depends on 1)

The method of claim 1, wherein the NDEF message includes an unsecured first set of records spanning from a signature RTD preceding the place marker signature record to the place marker signature record.

### Claim 4 (depends on 1)

The method of claim 1, wherein the set of records following the place marker signature record is secured by using a signature RTD that includes a valid signature.

### Claim 5 (depends on 4)

The method of claim 4, further comprising deleting unsecured records in the NDEF message without changing the signature in the signature RTD that includes the valid signature.

### Claim 6 (depends on 4)

The method of claim 4, further comprising modifying unsecured records in the NDEF message, without changing the signature in the signature RTD that includes the valid signature.

### Claim 7 (depends on 4)

The method of in claim 4, further comprising adding unsecured records in the NDEF message, without changing the signature in the signature RTD that includes the valid signature.

### Claim 8

A Near Field Communication (NFC) device for selectively securing records in a Near Field Communication Data Exchange Format (NDEF) message, the NFC device comprising:
an NFC message generating unit for generating a place marker signature record by setting a URI_present field to ‘0’ and setting a signature_type field to a predefined value, wherein a combination of the URI_present field set to ‘0’ and the signature_type field set to the predefined value indicates that a signature Record Type Definition (RTD) is a place marker signature record, and placing the place marker signature record in the NDEF message, wherein a set of records following the place marker signature record are secured; and
a transmitter for transmitting the NDEF message.

### Claim 9 (depends on 8)

The device of claim 8, wherein the NDEF message includes an unsecured first set of records spanning from a beginning of the NDEF message to the place marker signature record.

### Claim 10 (depends on 8)

The device of claim 8, wherein the NDEF message includes an unsecured first set of records spanning from an signature RTD preceding the place marker signature record to the place marker signature record.

### Claim 11 (depends on 8)

The device of claim 8, wherein the set of records following the place marker signature record is secured by using a signature RTD that includes a valid signature.

### Claim 12 (depends on 11)

The device of claim 11, further comprising deleting unsecured records in the NDEF message without changing the signature in the signature RTD that includes the valid signature.

### Claim 13 (depends on 11)

The device of claim 11, further comprising modifying unsecured records in the NDEF message, without changing the signature in the signature RTD that includes the valid signature.

### Claim 14 (depends on 11)

The device of in claim 11, further comprising adding unsecured records in the NDEF message, without changing the signature in the signature RTD that includes the valid signature.