# US 10,769,292 B2 · Hierarchical temporal memory for expendable access control

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- Number: US 10,769,292 B2
- Document ID: US10769292B2
- Status: Granted
- Kind: B2
- Application number: 15/939,650
- Filed: 2018-03-29
- Published: 2018-10-04
- Granted: 2020-09-08
- Earliest claimed: 2017-03-30
- Assignees: British Telecommunications public limited company
- Applicants: British Telecommunications Public Limited Company
- Inventors: Joshua Daniel; Xiaofeng Du; Gery Ducatel
- Web page: https://patentgrep.com/patent/US10769292B2

## CPC

- G06F 21/6218: {to a system of files or objects, e.g. local or distributed file system or database}
- G06F 21/62: Protecting access to data via a platform, e.g. using keys or access control rules
- G06N 20/00: Machine learning
- G06Q 20/065: {using e-cash}
- H04L 9/3239: {involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD}
- H04L 9/3297: {involving time stamps, e.g. generation of time stamps}
- H04L 9/50: {using hash chains, e.g. blockchains or hash trees}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06N: COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Computer implemented methods for access control for a restricted resource in a computer system and related methods train a hierarchical temporal memory and use cryptocurrency allocations and blockchain records to determine whether resource consumers are authorized or unauthorized to access the restricted resource.

## Claims

### Claim 1

A computer implemented method for access control for a restricted resource in a computer system, the method comprising:
receiving a first set of records for the computer system, each record detailing an occurrence in the computer system during a training time period when the restricted resource is accessed in an approved manner;
generating a sparse distributed representation of the first set of records to form a training set for a hierarchical temporal memory (HTM);
training the HTM based on the training set in order that the trained HTM provides a model of operation of the computer system during the training time period;
receiving a request to access the restricted resource by a resource consumer;
allocating a predetermined quantity of cryptocurrency to the resource consumer, the allocation being recorded by a blockchain data structure accessible by a network, the blockchain data structure storing digitally signed records validated by network connected miner software components;
receiving a second set of records for the computer system, each record detailing an occurrence in the computer system during an operating time period for the computer system in use by the resource consumer of the restricted resource;
generating a sparse distributed representation of the second set of records to form an input set for the trained HTM;
executing the trained HTM based on the input set to determine a degree of recognition of the second set of records of the input set;
responsive to a determination that a degree of recognition of one or more records of the input set is below a threshold degree, generating a blockchain transaction to expend at least a portion of the cryptocurrency allocated to the resource consumer; and
responsive to a determination that a quantity of cryptocurrency allocated to the resource consumer is below a threshold quantity, identifying the resource consumer as unauthorized to access the restricted resource.

### Claim 2 (depends on 1)

The method of claim 1, further comprising precluding access to at least one of the computer system or the restricted resource in response to an identification that the resource consumer is unauthorized.

### Claim 3

A computer system comprising:
a processor and a memory storing computer program code for performing:
receiving a first set of records for the computer system, each record detailing an occurrence in the computer system during a training time period when the restricted resource is accessed in an approved manner;
generating a sparse distributed representation of the first set of records to form a training set for a hierarchical temporal memory (HTM);
training the HTM based on the training set in order that the trained HTM provides a model of operation of the computer system during the training time period;
receiving a request to access the restricted resource by a resource consumer;
allocating a predetermined quantity of cryptocurrency to the resource consumer, the allocation being recorded by a blockchain data structure accessible by a network, the blockchain data structure storing digitally signed records validated by network connected miner software components;
receiving a second set of records for the computer system, each record detailing an occurrence in the computer system during an operating time period for the computer system in use by the resource consumer of the restricted resource;
generating a sparse distributed representation of the second set of records to form an input set for the trained HTM;
executing the trained HTM based on the input set to determine a degree of recognition of the second set of records of the input set;
responsive to a determination that a degree of recognition of one or more records of the input set is below a threshold degree, generating a blockchain transaction to expend at least a portion of the cryptocurrency allocated to the resource consumer; and
responsive to a determination that a quantity of cryptocurrency allocated to the resource consumer is below a threshold quantity, identifying the resource consumer as unauthorized to access the restricted resource.

### Claim 4

A non-transitory computer-readable storage medium storing a computer program element comprising computer program code to, when loaded into a computer system and executed thereon, cause the computer system to provide access control for a restricted resource in a computer system by:
receiving a first set of records for the computer system, each record detailing an occurrence in the computer system during a training time period when the restricted resource is accessed in an approved manner;
generating a sparse distributed representation of the first set of records to form a training set for a hierarchical temporal memory (HTM);
training the HTM based on the training set in order that the trained HTM provides a model of operation of the computer system during the training time period;
receiving a request to access the restricted resource by a resource consumer;
allocating a predetermined quantity of cryptocurrency to the resource consumer, the allocation being recorded by a blockchain data structure accessible by a network, the blockchain data structure storing digitally signed records validated by network connected miner software components;
receiving a second set of records for the computer system, each record detailing an occurrence in the computer system during an operating time period for the computer system in use by the resource consumer of the restricted resource;
generating a sparse distributed representation of the second set of records to form an input set for the trained HTM;
executing the trained HTM based on the input set to determine a degree of recognition of the second set of records of the input set;
responsive to a determination that a degree of recognition of one or more records of the input set is below a threshold degree, generating a blockchain transaction to expend at least a portion of the cryptocurrency allocated to the resource consumer; and
responsive to a determination that a quantity of cryptocurrency allocated to the resource consumer is below a threshold quantity, identifying the resource consumer as unauthorized to access the restricted resource.