# US 10,122,532 B2 · Security verification apparatus using biometric information and security verification method

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- Number: US 10,122,532 B2
- Document ID: US10122532B2
- Status: Granted
- Kind: B2
- Application number: 15/176,460
- Filed: 2016-06-08
- Published: 2017-03-30
- Granted: 2018-11-06
- Earliest claimed: 2015-09-30
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics, Co., Ltd.
- Inventors: Hee Bum Lee
- Web page: https://patentgrep.com/patent/US10122532B2

## CPC

- H04L 9/3231: {Biological data, e.g. fingerprint, voice or retina (network architectures or network communication protocols for supporting authentication of entities using biometrical features in a packet data network H04L63/0861)}
- H04L 9/06: the encryption apparatus using shift registers or memories for block-wise {or stream} coding, e.g. DES systems {or RC4; Hash functions; Pseudorandom sequence generators}
- H04L 9/0819: {Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) (network architectures or network communication protocols for key distribution in a packet data network H04L63/062)}
- H04L 9/0838: {Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these (network architectures or network communication protocols for key exchange in a packet data network H04L63/061)}
- H04L 9/3263: {involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements (network architectures or network communication protocols for supporting authentication of entities using certificates in a packet data network H04L63/0823)}
- H04L 2209/34: Encoding or coding, e.g. Huffman coding or error correction
- H04L 2209/805: Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A security verification apparatus using biometric information and a security verification method are described. The security verification apparatus includes a sensor configured to acquire images of biometric information of a user, and scramble the images of the biometric information by using a received key matrix. The security verification apparatus further includes an information processor configured to generate the key matrix by using a random key, transmit the key matrix to the sensor, decode data of the scrambled images received from the sensor by using the key matrix, and verify the user.

## Claims

### Claim 1

A security verification apparatus, comprising:
a sensor configured to acquire biometric information comprising image data of a user, and scramble the image data using a received key matrix; and
an information processor configured to: generate the key matrix using a random key, transmit the key matrix to the sensor, decode the scrambled image data received from the sensor using the key matrix, and verify the user.

### Claim 2 (depends on 1)

The security verification apparatus of claim 1, wherein the information processor comprises:
an encoder configured to generate the key matrix using the random key;
a communicator configured to transmit the key matrix to the sensor;
a signal processor configured to perform analog-digital conversion on the scrambled image data received from the sensor; and
a verifier configured to decode the scrambled image data processed by the signal processor using the key matrix and verify the user based on the decoded data.

### Claim 3 (depends on 2)

The security verification apparatus of claim 2, wherein the encoder is configured to generate the key matrix by further using the random key with at least one of a public key and a private key.

### Claim 4 (depends on 1)

The security verification apparatus of claim 1, wherein the sensor comprises:
an imager configured to acquire the images of the biometric information of the user; and
a scrambler configured to scramble the image data acquired by the imager using mask patterns based on the key matrix.

### Claim 5 (depends on 1)

The security verification apparatus of claim 1, wherein the information processor is configured to generate the key matrix using the random key with a public key.

### Claim 6 (depends on 5)

The security verification apparatus of claim 5, wherein the information processor is configured to generate the key matrix by further using the random key and the public key with a private key.

### Claim 7 (depends on 1)

The security verification apparatus of claim 1, wherein the biometric information comprises a unique biometric identifier of the user.

### Claim 8 (depends on 1)

The security verification apparatus of claim 1, wherein the key matrix has a variable size.

### Claim 9

A security verification method, comprising:
generating, by an information processor, a key matrix using a random key;
scrambling, by a sensor receiving the key matrix, image data comprised of biometric information of a user, in which the image data is scrambled using mask patterns based on the key matrix; and
decoding, by the information processor, the scrambled image data received from the sensor by using the key matrix, and verifying the user based on the decoded image data.

### Claim 10 (depends on 9)

The security verification method of claim 9, wherein the scrambling comprises: scrambling, by the sensor, the image data of the biometric information of the user using the mask patterns based on the key matrix according to a mathematical replacement arithmetic algorithm.

### Claim 11 (depends on 10)

The security verification method of claim 10, further comprising: transmitting, by the sensor, the scrambled image data to the information processor through serial communication.

### Claim 12 (depends on 9)

The security verification method of claim 9, further comprising: transmitting, by the sensor, the scrambled image data in a packet unit to the information processor through serial communication.

### Claim 13 (depends on 9)

The security verification method of claim 9, wherein the biometric information comprises a unique biometric identifier of the user.

### Claim 14 (depends on 9)

The security verification method of claim 9, wherein the generating of the key matrix comprises: generating the key matrix using the random key with at least one of a public key and a private key.

### Claim 15 (depends on 9)

The security verification method of claim 9, wherein the key matrix has a variable size.

### Claim 16

A security verification method, comprising:
generating, at an image processor, a key matrix using a random key;
sharing the key matrix with an imager, wherein the imager comprises a sensor configured to obtain a unique biometric identifier of a user;
encoding, within the sensor, images generated at the imager using the shared key matrix;
transmitting encoded images to the image processor; and decoding encoded images at the image processor using the shared key matrix.

### Claim 17 (depends on 16)

The security verification method of claim 16, wherein encoding the images comprises scrambling the images using mask patterns based on the key matrix according to a mathematical replacement arithmetic algorithm.

### Claim 18 (depends on 16)

The security verification method of claim 16, wherein the key matrix has a variable size.

### Claim 19 (depends on 16)

The security verification method of claim 16, wherein generating the key matrix is performed using the random key with at least one of a public key and a private key.