Methods and apparatus for privacy protection during biometric verification

1. A method of generating a biometric template, comprising:

emitting an incident non-visible light toward a requester;

detecting a detected non-visible light from the requester;

generating a sampled profile including a plurality of sampling points having a plurality of intensities of the detected non-visible light,

identifying one or more macroblocks, wherein each macroblock includes a coordinate and a subset of the plurality of sampling points,

calculating a number of occurrences of a local pattern value within each subset of the plurality of the sampling points for each of the one or more macroblocks;

generating a first array including a plurality of weighted values, wherein each of the plurality of weighted values is calculated by dividing the corresponding number of occurrences of the local pattern value by a size of a corresponding macroblock of the one or more macroblocks;

assigning a unique index to each of the plurality of weighted values;

generating a second array of the unique indices by ranking the unique indices based on an associated weighted value;

generating a third array including a plurality of ranking distances between a highest weighted value of the plurality of weighted values and each weighted value of the plurality of weighted values;

constructing the biometric template of the requester based on the third array and the coordinates; and

wherein an unauthorized user is unable to visually identify the requester based on the biometric template.

2. The method of claim 1 , further comprising:

storing the sampled profile of the requester in a storage device;

receiving confidential information associated with the requester; and

associating the confidential information with the sampled profile.

3. The method of claim 1 , further comprising:

generating an encryption key based on the biometric template;

encrypting data using the encryption key to generate encrypted data; and

storing the encrypted data.

4. The method of claim 3 , further comprising:

generating a decryption key based on the biometric template;

decrypting the encrypted data using the decryption key to recover the data; and

accessing content of the data.

5. The method of claim 4 , wherein the encryption key is a public key and the decryption key is a private key.

6. The method of claim 3 , wherein the data includes at least one of confidential information, the sampled profile, a document, or a movie.

7. The method of claim 1 , further comprising associating at least one of a fingerprint of the requester, a voice pattern of the requester, an iris pattern of the requester, a facial feature of the requester, a signature pattern of the requester, a shape of an ear of the requester, a retinal pattern of the requester, a gait of the requester, or a hand geometry of the requester with the biometric template for identification.

8. An edge capture device (ECD), comprising:

a memory that stores a plurality of biometric templates;

a communication interface;

a processor communicatively coupled with the memory and the communication interface, the processor is configured to:

cause a light source to emit an incident non-visible light toward a requester;

cause an optical sensor to detect a detected non-visible light from the requester;

generate a sampled profile including a plurality of sampling points having a plurality of intensities of the detected non-visible light,

identify one or more macroblocks, wherein each macroblock includes a coordinate and a subset of the plurality of sampling points,

calculate a number of occurrences of a local pattern value within each subset of the plurality of the sampling points for each of the one or more macroblocks;

generate a first array including a plurality of weighted values, wherein each of the plurality of weighted values is calculated by dividing the corresponding number of occurrences of the local pattern value by a size of a corresponding macroblock of the one or more macroblocks;

assign a unique index to each of the plurality of weighted values;

generate a second array of the unique indices by ranking the unique indices based on an associated weighted value;

generate a third array including a plurality of ranking distances between a highest weighted value of the plurality of weighted values and each weighted value of the plurality of weighted values; and

construct a biometric template of the requester based on the third array and the coordinates;

wherein an unauthorized user is unable to visually identify the requester based on the biometric template.

9. The ECD of claim 8 , wherein the processor is further configured to:

store the sampled profile of the requester in a storage device;

receive confidential information associated with the requester; and

associate the confidential information with the sampled profile.

10. The ECD of claim 8 , wherein the processor is further configured to:

generate an encryption key based on the biometric template;

encrypt data using the encryption key to generate encrypted data; and

store the encrypted data in the memory.

11. The ECD of claim 10 , wherein the processor is further configured to:

generate a decryption key based on the biometric template;

decrypt the encrypted data using the decryption key to recover the data; and

access content of the data.

12. The ECD of claim 11 , wherein the encryption key is a public key and the decryption key is a private key.

13. The ECD of claim 10 , wherein the data includes at least one of confidential information, the sampled profile, a document, or a movie.

14. The ECD of claim 8 , wherein the processor is further configured to associate at least one of a fingerprint of the requester, a voice pattern of the requester, an iris pattern of the requester, a facial feature of the requester, a signature pattern of the requester, a shape of an ear of the requester, a retinal pattern of the requester, a gait of the requester, or a hand geometry of the requester with the biometric template.

15. A non-transitory computer readable medium having instructions stored therein that, when executed by one or more processors of an edge capture device (ECD), cause the one or more processors to:

cause a light source to emit an incident non-visible light toward a requester;

cause an optical sensor to detect a detected non-visible light from the requester;

generate a sampled profile including a plurality of sampling points having a plurality of intensities of the detected non-visible light,

identify one or more macroblocks, wherein each macroblock includes a coordinate and a subset of the plurality of sampling points,

calculate a number of occurrences of a local pattern value within each subset of the plurality of the sampling points for each of the one or more macroblocks;

generate a first array including a plurality of weighted values, wherein each of the plurality of weighted values is calculated by dividing the corresponding number of occurrences of the local pattern value by a size of a corresponding macroblock of the one or more macroblocks;

assign a unique index to each of the plurality of weighted values;

generate a second array of the unique indices by ranking the unique indices based on an associated weighted value;

generate a third array including a plurality of ranking distances between a highest weighted value of the plurality of weighted values and each weighted value of the plurality of weighted values; and

construct a biometric template of the requester based on the third array and the coordinates;

wherein an unauthorized user is unable to visually identify the requester based on the biometric template.

16. The non-transitory computer readable medium of claim 15 , further comprising instructions that, when executed by the one or more processors, cause the one or more processors to:

store the sampled profile of the requester in a storage device;

receive confidential information associated with the requester; and

associate the confidential information with the sampled profile.

17. The non-transitory computer readable medium of claim 15 , further comprising instructions that, when executed by the one or more processors, cause the one or more processors to:

generate an encryption key based on the biometric template;

encrypt data using the encryption key to generate encrypted data; and

store the encrypted data.

18. The non-transitory computer readable medium of claim 17 , further comprising instructions that, when executed by the one or more processors, cause the one or more processors to:

generate a decryption key based on the biometric template;

decrypt the encrypted data using the decryption key to recover the data; and

access content of data.

19. The non-transitory computer readable medium of claim 18 , wherein the encryption key is a public key and the decryption key is a private key.

20. The non-transitory computer readable medium of claim 15 , further comprising instructions that, when executed by the one or more processors, cause the one or more processors to associate at least one of a fingerprint of the requester, a voice pattern of the requester, an iris pattern of the requester, a facial feature of the requester, a signature pattern of the requester, a shape of an ear of the requester, a retinal pattern of the requester, a gait of the requester, or a hand geometry of the requester with the biometric template.