Granted Patent B2

US 10,931,663 · App. 15/904,759 · Granted Feb 23, 2021

Inventors: Anthony Edward Roper (Angus, GB); Colin George Herkes (Fife, GB)

Assignee: NCR Corporation

H04L63/083H04L9/14H04L9/3271H04L63/0876

Abstract

Claims (24)

1. A method, comprising:

receiving a challenge from an authenticator of a transaction terminal in response to a second-factor authentication when the authenticator has successfully processed a first-factor authentication for access to a secure resource of the transaction terminal, wherein receiving further includes receiving the challenge over a Universal Serial Bus (USB) connection to the transaction terminal;

processing a one-time cryptographic response to the challenge on a cryptographic processor using cryptographic keys stored in a secure memory accessible to only the cryptographic processor;

performing the processing upon collecting biometric data for a user associated with the second factor authentication;

generating the one-time cryptographic response using the biometric data and the challenge as input data processed by the cryptographic processor combined with the cryptographic keys;

signing the one-time cryptographic response with one or more of the cryptographic keys producing a signed response to the challenge; and

providing the signed response back to the authenticator over the USB connection for processing the second-factor authentication from the transaction terminal.

2. The method of claim 1 , wherein receiving further includes providing a secure device identifier for a secure device processing the method to the authenticator.

3. The method of claim 2 , wherein providing further includes providing the secure device identifier upon the USB connection of the secure device to a USB device port of the transaction terminal.

4. The method of claim 3 , wherein processing further includes performing the processing upon detection of a button depressed on the secure device by the user associated with the second factor authentication and collecting the biometric data as finger print data of the user when the button was depressed.

5. The method of claim 1 , wherein signing further includes selecting a particular one of the cryptographic keys to sign the response based on a resource identifier for the secure resource included in the challenge.

6. A terminal, comprising:

a hardware processor; and

an authenticator;

wherein the authenticator configured to:

i) execute on the hardware processor,

ii) process a first-factor authentication on a user attempting to access a secure resource of the terminal,

iii) process a second-factor authentication based on interactions with a secure device connected to a Universal Serial Bus (USB) device port of the terminal,

wherein the interactions include: a unique one-time challenge generated by the authenticator and provided to the secure device and receipt of a one-time and unique response generated by the secure device in response to the challenge and the user depressing a button on the secure device,

wherein fingerprint data is collected for the user as biometric data when the user depresses the button, and

wherein the one-time and unique response is generated using the biometric data and the one-time challenge as input data processed by a cryptographic processor combined with cryptographic keys,

iv) set a secure role for the user to access the secure resource when the first-factor authentication and the second-factor authentication are successful, and

v) grant the user access to the secure resource with the secure role set when the first-factor authentication and the second-factor authentication are successful.

7. The terminal of claim 6 , wherein the terminal is one of: Self-Service Terminal (SST), an Automated Teller Machine (ATM), a kiosk, a Point-Of-Sale (POS) terminal.

Assignments (9)