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US 10,652,233 B2Granted
Method, system and device for generating, storing, using, and validating NFC tags and data
AssigneeAssa Abloy AB
InventorsPhilip Hoyer, Julian Eric Lovelock, Mark Robinton
Life of this patent
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Abstract
A smart tag and methods of interacting with and authenticating interactions with the same are provided. The smart tag is enabled to generate a Tag Authentication Cryptogram (TAC) and include the TAC in response to a read request. Accordingly, each response generated by the smart tag will include a different TAC. It follows that interactions between the smart tag and a reading device can be authenticated as unique interactions if the TAC is validated as a unique and correct TAC.
Claims20
A method, comprising:
- in response to at least one of:
- (i) receiving a read request at a smart tag from a reading device and (ii) determining that a reading device is within a read range of the smart tag, generating, at the smart tag, a data object that includes tag data, a Tag Unique Identifier (TAGID), and a Tag Authentication Cryptogram (TAC), wherein the TAGID represents the smart tag at an authentication service, and wherein the TAC is generated by the smart tag with a cryptographic key and a changeable data part;
- and
- transmitting the data object from the smart tag to the reading device via a proximity-based Radio Frequency (RF) protocol, wherein the data object is transmitted to the reading device with one or more delimiters separating the tag data, the TAGID, and the TAC.
1 more element
A method, comprising:
- in response to at least one of:
- (i) receiving a read request at a smart tag from a reading device and (ii) determining that a reading device is within a read range of the smart tag, generating, at the smart tag, a data object that includes tag data, a Tag Unique Identifier (TAGID), and a Tag Authentication Cryptogram (TAC), wherein the TAGID represents the smart tag at an authentication service, and wherein the TAC is generated by the smart tag without the TAGID using a cryptographic key and a changeable data part;
- and
- transmitting the data object from the smart tag to the reading device via a proximity-based Radio Frequency (RF) protocol, wherein the data object is transmitted to the reading device with one or more delimiters separating the tag data, the TAGID, and the TAC.
1 more element
A method, comprising:
- in response to at least one of:
- (i) receiving a read request at a smart tag from a reading device and (ii) determining that a reading device is within a read range of the smart tag, generating, at the smart tag, a data object that includes tag data, a Tag Unique Identifier (TAGID), and a Tag Authentication Cryptogram (TAC), wherein the TAGID represents the smart tag at an authentication service, and wherein the TAC is generated by the smart tag with a cryptographic key and a changeable data part;
- and
- transmitting the data object from the smart tag to the reading device via a proximity-based Radio Frequency (RF) protocol;
- wherein the data object is transmitted to the reading device with one or more delimiters separating the tag data, the TAGID, and the TAC;
- and
- wherein the data object does not include the changeable data part.
4 more elements
Dependencies are inferred from the claim text.