Patent ID: 11870769
Assignee: ENTERSEKT INTERNATIONAL LIMITED
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 7:
8. A computer-implemented method for identifying a browser instance executing on a user computing device, the method conducted at a server of a web domain in a browser session being between the server hosting the web domain and the browser instance and comprising:
providing instructions to the browser instance in the browser session with the web domain which cause the browser instance to:
obtain a private key and a public key of a key pair unique to a combination of the web domain and the browser instance being used to access the web domain; and,
store the private key at a storage provided by the browser instance for use by the browser instance during an active browser session with the web domain and in which the private key is stored as unextractable from the storage, wherein the private key is stored with configuration for use by the browser instance during an active browser session with the web domain in signing or cryptographic operations without the private key being revealed;
transmitting, to the browser instance, a challenge request;
receiving a challenge response to the challenge request generated using the private key; and
responsive to receiving the challenge response, validating the challenge response using the public key.