US6507912B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection of biometric data via key-dependent sampling
Assignee: International Business Machines Corp
•
Filing: 1999-01-27
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Granted: 2003-01-14
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Expires: 2019-01-27
Abstract
Abstract Key-dependent sampling of a biometric characteristic is performed at a client, to thereby generate key-dependent biometric data samples. The key-dependent biometric data samples are then transmitted from the client to a server. By sampling the biometric characteristic at the client in a key-dependent manner, the key-dependent biometric data samples may be transmitted from the client to the server without the need for additional encryption and/or a signature. A key is preferably transmitted from the server to the client. The key is then used to perform the key-dependent sampling of the biometric characteristic at the client. The key-dependent sampling may be performed by sampling the biometric characteristic at a sampling frequency that is a function of the key. Alternatively, the key can be applied to the sampled biometric data, to thereby generate the key-dependent biometric data samples that are a function of the key. The key is preferably used to perform nonlinear key-dependent sampling of the biometric characteristic at the client, for example by using the key to determine the sampling frequency and also using the key to apply a nonlinear function to the sampled biometric data. Further encryption of the biometric data and/or the use of a signature with the biometric data need not be performed.
Inventors
- 👤 Stephen Michael Matyas, Jr.
- 👤 Mohammad Peyravian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:02
CPC Classifications
G; G06; G06F; G06F21/00; G06F21/30; G06F21/31; G06F21/32; H; H04; H04L; H04L9/00; H04L9/08; H04L9/0861; H04L9/0866; H04L9/32; H04L9/3226; H04L9/3231
Claims Analysis
Total Claims: 54
Claim 1
Independent Claim
63 words
A method for securely transmitting biometric data from a client to a server comprising the steps of: performing key-dependent sampling of a biometric characteristic at the client by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric data samples; and transmitting the key-dependent biometric data samples from the client to the server.
Claim 2
Independent Claim
63 words
A method for securely transmitting biometric data from a client to a server comprising the steps of: performing key-dependent sampling of a biometric characteristic at the client by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric data samples; and transmitting the key-dependent biometric data samples from the client to the server.
Claim 3
Dependent Claim
49 words
A method according to claim 1 wherein the performing step is preceded by the step of transmitting a key from the server to the client and wherein the performing step comprises the step of using the key to perform the key-dependent sampling of the biometric characteristic at the client.
Claim 4
Dependent Claim
60 words
A method according to claim 2 wherein the step of transmitting comprises the steps of: transmitting a random number from the server to the client; and combining the random number and a secret value at the client; and wherein the step of performing comprises the step of performing key-dependent sampling using the combination of the random number and secret value.
Claim 5
Dependent Claim
30 words
A method according to claim 3 wherein the step of transmitting a random number is preceded by the step of transmitting the secret value from the server to the client.
Claim 6
Dependent Claim
31 words
A method according to claim 1 wherein the performing step further comprises the step of applying the key to the sampled biometric data to thereby generate the key-dependent biometric data samples.
Claim 7
Dependent Claim
33 words
A method according to claim 1 wherein the performing step comprises the step of: performing nonlinear key-dependent sampling of the biometric characteristic at the client to thereby generate the key-dependent biometric data samples.
Claim 8
Dependent Claim
33 words
A method according to claim 1 wherein the transmitting step is followed by the step of: comparing the key-dependent biometric data samples to at least one key-dependent biometric data template at the server.
Claim 9
Dependent Claim
29 words
A method according to claim 1 wherein the transmitting step comprises the step of transmitting the key-dependent biometric data samples from the client to the server over the Internet.
Claim 10
Independent Claim
68 words
A method for processing biometric data from a client at a server comprising the steps of: performing key-dependent sampling of at least one biometric characteristic template at the server by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric template data samples; and comparing the key-dependent biometric template data samples with the biometric data from the client.
Claim 11
Independent Claim
68 words
A method for processing biometric data from a client at a server comprising the steps of: performing key-dependent sampling of at least one biometric characteristic template at the server by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric template data samples; and comparing the key-dependent biometric template data samples with the biometric data from the client.
Claim 12
Dependent Claim
33 words
A method according to claim 9 wherein the performing step further comprises the step of applying the key to the sampled biometric template data to thereby generate the key-dependent biometric template data samples.
Claim 13
Dependent Claim
38 words
A method according to claim 9 wherein the performing step comprises the step of: performing nonlinear key-dependent sampling of the at least one biometric characteristic template at the server to thereby generate the key-dependent biometric template data samples.
Claim 14
Dependent Claim
53 words
A client system for securely transmitting biometric data comprising: means for performing key-dependent sampling of a biometric characteristic by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric data samples; and means for transmitting the key-dependent biometric data samples to a server.
Claim 15
Dependent Claim
53 words
A client system for securely transmitting biometric data comprising: means for performing key-dependent sampling of a biometric characteristic by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric data samples; and means for transmitting the key-dependent biometric data samples to a server.
Claim 16
Dependent Claim
37 words
A system according to claim 12 further comprising means for receiving a key from the server and wherein the means for performing comprises means for using the key to perform the key-dependent sampling of the biometric characteristic.
Claim 17
Dependent Claim
31 words
A system according to claim 12 wherein the means for performing further comprises: means for applying the key to the sampled biometric data to thereby generate the key-dependent biometric data samples.
Claim 18
Dependent Claim
30 words
A system according to claim 12 wherein the means for performing comprises: means for performing nonlinear key-dependent sampling of the biometric characteristic to thereby generate the key-dependent biometric data samples.
Claim 19
Dependent Claim
30 words
A system according to claim 12 wherein the means for performing comprises means for performing key-dependent sampling of a biometric characteristic template to thereby generate key-dependent biometric data template samples.
Claim 20
Dependent Claim
48 words
A system according to claim 12 wherein the means for performing comprises: means for receiving a random number from the server; means for combining the random number and a secret value at the client; and means for performing key-dependent sampling using the combined random number and secret value.
Claim 21
Dependent Claim
22 words
A system according to claim 17 wherein the means for performing further comprises means for receiving the secret value from the server.
Claim 22
Dependent Claim
28 words
A system according to claim 12 wherein the means for transmitting comprises a web browser that transmits the key-dependent biometric data samples to the server over the Internet.
Claim 23
Dependent Claim
60 words
A server system for processing biometric data comprising: means for performing key-dependent sampling of at least one biometric characteristic template by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric template data samples; and means for comparing the key-dependent biometric template data samples with biometric data from a client.
Claim 24
Dependent Claim
60 words
A server system for processing biometric data comprising: means for performing key-dependent sampling of at least one biometric characteristic template by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric template data samples; and means for comparing the key-dependent biometric template data samples with biometric data from a client.
Claim 25
Dependent Claim
33 words
A system according to claim 20 wherein the means for performing further comprises: means for applying the key to the sampled biometric template data to thereby generate the key-dependent biometric template data samples.
Claim 26
Dependent Claim
35 words
A system according to claim 20 wherein the means for performing comprises: means for performing nonlinear key-dependent sampling of the at least one biometric characteristic template to thereby generate the key-dependent biometric template data samples.
Claim 27
Dependent Claim
80 words
A computer program product for securely transmitting biometric data the computer program product comprising a computer-readable storage medium having computer-readable program code means embodied in the medium, the computer-readable program code means comprising: computer-readable program code means for performing key-dependent sampling of a biometric characteristic by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric data samples; and computer-readable program code means for transmitting the key-dependent biometric data samples.
Claim 28
Dependent Claim
80 words
A computer program product for securely transmitting biometric data the computer program product comprising a computer-readable storage medium having computer-readable program code means embodied in the medium, the computer-readable program code means comprising: computer-readable program code means for performing key-dependent sampling of a biometric characteristic by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric data samples; and computer-readable program code means for transmitting the key-dependent biometric data samples.
Claim 29
Dependent Claim
39 words
A computer program product according to claim 23 further comprising computer-readable program code means for receiving a key and wherein the means for performing comprises means for using the key to perform the key-dependent sampling of the biometric characteristic.
Claim 30
Dependent Claim
39 words
A computer program product according to claim 23 wherein the computer-readable program code means for performing further comprises: computer-readable program code means for applying the key to the sampled biometric data to thereby generate the key-dependent biometric data samples.
Claim 31
Dependent Claim
38 words
A computer program product according to claim 23 wherein the computer-readable program code means for performing comprises: computer-readable program code means for performing nonlinear key-dependent sampling of the biometric characteristic to thereby generate the key-dependent biometric data samples.
Claim 32
Dependent Claim
38 words
A computer program product according to claim 23 wherein the computer-readable program code means for performing comprises computer-readable program code means for performing key-dependent sampling of a biometric characteristic template to thereby generate key-dependent biometric data template samples.
Claim 33
Dependent Claim
56 words
A computer program product according to claim 23 wherein the computer-readable program code means for performing comprises: computer-readable program code means for receiving a random number; computer-readable program code means for combining the random number and a secret value; and computer-readable program code means for performing key-dependent sampling using the combined random number and secret value.
Claim 34
Dependent Claim
27 words
A computer program product according to claim 28 wherein the computer-readable program code means for performing further comprises computer-readable program code means for receiving the secret value.
Claim 35
Dependent Claim
30 words
A computer program product according to claim 23 wherein the computer-readable program code means for transmitting comprises a web browser that transmits the key-dependent biometric data samples over the Internet.
Claim 36
Dependent Claim
88 words
A computer program product system for processing biometric data, the computer program product comprising a computer-readable storage medium having computer-readable program code means embodied in the medium, the computer-readable program code means comprising: computer-readable program code means for performing key-dependent sampling of at least one biometric characteristic template by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric template data samples; and computer-readable program code means for comparing the key-dependent biometric template data samples with biometric data.
Claim 37
Dependent Claim
88 words
A computer program product system for processing biometric data, the computer program product comprising a computer-readable storage medium having computer-readable program code means embodied in the medium, the computer-readable program code means comprising: computer-readable program code means for performing key-dependent sampling of at least one biometric characteristic template by sampling the biometric characteristic at a sampling frequency that is a function of a key to thereby generate key-dependent biometric template data samples; and computer-readable program code means for comparing the key-dependent biometric template data samples with biometric data.
Claim 38
Dependent Claim
41 words
A computer program product according to claim 31 wherein the computer-readable program code means for performing further comprises: computer-readable program code means for applying the key to the sampled biometric template data to thereby generate the key-dependent biometric template data samples.
Claim 39
Dependent Claim
43 words
A computer program product according to claim 31 wherein the computer-readable program code means for performing comprises: computer-readable program code means for performing nonlinear key-dependent sampling of the at least one biometric characteristic template to thereby generate the key-dependent biometric template data samples.
Claim 40
Independent Claim
57 words
A method for securely transmitting biometric data from a client to a server comprising the steps of: acquiring key-dependent biometric data samples by acquiring biometric characteristic samples of a user at the client utilizing a sampling characteristic that is dependent on a key value; and transmitting the key-dependent biometric data samples from the client to the server.
Claim 41
Independent Claim
57 words
A method for securely transmitting biometric data from a client to a server comprising the steps of: acquiring key-dependent biometric data samples by acquiring biometric characteristic samples of a user at the client utilizing a sampling characteristic that is dependent on a key value; and transmitting the key-dependent biometric data samples from the client to the server.
Claim 42
Dependent Claim
47 words
The method of claim 34 , wherein the step of acquiring key-dependent biometric data samples comprises acquiring biometric characteristic samples of a user at the client utilizing a sampling characteristic that is a non-linear function of the key value to thereby generate the key-dependent biometric data samples.
Claim 43
Dependent Claim
34 words
The method of claim 35 , wherein the sampling characteristic comprises a sampling frequency and wherein the biometric characteristic is sampled utilizing a sampling frequency that is a non-linear function of the key value.
Claim 44
Dependent Claim
38 words
The method of claim 34 , wherein the step of transmitting the key-dependent biometric data samples from the client to the server comprises transmitting the key-dependent biometric data samples from the client to the server in the clear.
Claim 45
Independent Claim
58 words
A system for securely transmitting biometric data from a client to a server comprising: means for acquiring key-dependent biometric data samples by acquiring biometric characteristic samples of a user at the client utilizing a sampling characteristic that is dependent on a key value; and means for transmitting the key-dependent biometric data samples from the client to the server.
Claim 46
Independent Claim
58 words
A system for securely transmitting biometric data from a client to a server comprising: means for acquiring key-dependent biometric data samples by acquiring biometric characteristic samples of a user at the client utilizing a sampling characteristic that is dependent on a key value; and means for transmitting the key-dependent biometric data samples from the client to the server.
Claim 47
Dependent Claim
49 words
The system of claim 38 , wherein the means for acquiring key-dependent biometric data samples comprises means for acquiring biometric characteristic samples of the user at the client utilizing a sampling characteristic that is a non-linear function of the key value to thereby generate the key-dependent biometric data samples.
Claim 48
Dependent Claim
34 words
The system of claim 39 , wherein the sampling characteristic comprises a sampling frequency and wherein the biometric characteristic is sampled utilizing a sampling frequency that is a non-linear function of the key value.
Claim 49
Dependent Claim
40 words
The method of claim 38 , wherein the means for transmitting the key-dependent biometric data samples from the client to the server comprises means for transmitting the key-dependent biometric data samples from the client to the server in the clear.
Claim 50
Dependent Claim
86 words
A computer program product for securely transmitting biometric data from a client to a server comprising: a computer readable storage medium having computer readable program code embodied therein, the computer readable program code comprising: computer readable program code configured to acquire key-dependent biometric data samples by acquiring biometric characteristic samples of a user at the client utilizing a sampling characteristic that is dependent on a key value; and computer readable program code configured to transmit the key-dependent biometric data samples from the client to the server.
Claim 51
Dependent Claim
86 words
A computer program product for securely transmitting biometric data from a client to a server comprising: a computer readable storage medium having computer readable program code embodied therein, the computer readable program code comprising: computer readable program code configured to acquire key-dependent biometric data samples by acquiring biometric characteristic samples of a user at the client utilizing a sampling characteristic that is dependent on a key value; and computer readable program code configured to transmit the key-dependent biometric data samples from the client to the server.
Claim 52
Dependent Claim
59 words
The computer program product of claim 42 , wherein the computer readable program code configured to acquire key-dependent biometric data samples comprises computer readable program code configured to acquire biometric characteristic samples from the user at the client utilizing a sampling characteristic that is a non-linear function of the key value to thereby generate the key-dependent biometric data samples.
Claim 53
Dependent Claim
36 words
The computer program product of claim 43 , wherein the sampling characteristic comprises a sampling frequency and wherein the biometric characteristic is sampled utilizing a sampling frequency that is a non-linear function of the key value.
Claim 54
Dependent Claim
50 words
The computer program product of claim 42 , wherein the computer readable program code configured to transmit the key-dependent biometric data samples from the client to the server comprises computer readable program code configured to transmit the key-dependent biometric data samples from the client to the server in the clear.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2006-01-13 | 2006-07-15 | 2007-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-01-13 | 2010-07-15 | 2011-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-01-13 | 2014-07-15 | 2015-01-14 | $7700.00 | Window Closed / Lapsed |