US 11,811,936 B2
Public/private key biometric authentication system
Charles H. Herder, III, Dallas, TX (US); and Tina P. Srivastava, Dallas, TX (US)
Assigned to Badge Inc., Newark, CA (US)
Filed by Badge Inc., Lewes, DE (US)
Filed on Aug. 28, 2020, as Appl. No. 17/005,941.
Application 17/005,941 is a continuation of application No. 15/349,781, filed on Nov. 11, 2016, granted, now 10,764,054.
Claims priority of provisional application 62/255,186, filed on Nov. 13, 2015.
Prior Publication US 2020/0396076 A1, Dec. 17, 2020
Int. Cl. H04L 29/06 (2006.01); H04L 9/32 (2006.01); H04L 9/08 (2006.01); G06F 21/32 (2013.01); G06F 21/57 (2013.01); H04L 9/06 (2006.01); H04L 9/14 (2006.01); H04L 9/30 (2006.01)
CPC H04L 9/3231 (2013.01) [G06F 21/32 (2013.01); G06F 21/575 (2013.01); H04L 9/0618 (2013.01); H04L 9/0866 (2013.01); H04L 9/14 (2013.01); H04L 9/30 (2013.01); H04L 9/3263 (2013.01); G06F 2221/034 (2013.01); G06F 2221/2117 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A non-transitory computer readable storage medium encoded with instructions that, when executed by a computing facility, establish computer processes for generating a biometric public key for an individual based on biometric data of the individual, without the need for non-transient storage of the biometric data, the computer processes comprising:
receiving by a computing facility, from a transducer, a digital electronic signal that characterizes a biometric of the individual;
extracting by the computing facility, from the digital electronic signal, (a) a set of biometric values of the individual and (b), for each member of the set of biometric values of the individual, a confidence value indicating a degree of confidence that the corresponding biometric value is stable between characterizations;
using the confidence values to select, by the computing facility, only some, but not all, of the biometric values in the set extracted from the digital electronic signal, the selected biometric values being a confident subset of the set of biometric values of the individual, the confident subset excluding biometric values deemed to be unreliable as a discriminant of an identity of the individual based on the biometric;
generating, by the computing facility, a secret number;
computing, by the computing facility, the biometric public key based on the secret number and the confident subset, wherein the biometric public key verifiably characterizes both the biometric data of the individual and the secret number without the need for non-transient storage of either the confident subset or the secret number; and
storing the biometric public key in a storage facility,
wherein the confident subset is a vector having N rows and 1 column of bits,
wherein the secret number is a vector having M rows and 1 column of bits,
wherein the biometric public key (i) is a vector having N rows and 1 column of bits and (ii) is computed using a matrix having N rows and M columns of bits.