摘要:
The invention reduces addressing overhead for communication using a layered communication protocol. An improvement of the invention maintains security for the addressing information.
摘要:
The invention reduces addressing overhead for communication using a layered communication protocol. An improvement of the invention maintains security for the addressing information.
摘要:
Data is transmitted using a layered communication model. In a first layer of the model, a first communication fragment is generated. The first fragment includes a first address reference referring to a first entity. In a second layer of the model, below the first layer, a second communication fragment is generated based on the first communication fragment. The second communication fragment includes a second address reference referring to a second entity which is related to the first entity. The first address reference is at least partially removed from the data to be transmitted. Then the data including the second communication fragment is transmitted.
摘要:
A basic idea of the present invention is to selectively employ one of at least two different feature extraction processes when generating a biometric template of an individual. An individual offers a physiological property, such as a fingerprint, an iris, an ear, a face, etc., from which biometric data can be derived, to a sensor of an enrollment authority. In the following, the property to be discussed will be fingerprints, even though any suitable biometric property may be used. From the fingerprint, a positional reference point of the biometric data is derived. The derivation of the positional reference point may be accomplished using any appropriate method out of a number of known methods. Such a reference point could be the location of a core, a delta, a weighted average of minutiae coordinates, or alike. Typically, the reference point includes a core of a fingerprint expressed as a three-dimensional coordinate denoted by means of xr, yr, and angle αr. A contribution indicator is calculated for the derived positional reference point, and it is determined whether the derived positional reference point can be considered reliable. Depending on the reliability of the derived reference point, one of the two different feature extraction processes is selected; either the first feature set is extracted using a method which is invariant of the derived reference point, or a method is used taking into account the derived reference point. The better the estimation of the reference point is, the more reliable the reference point-dependent extraction method is. Finally, the biometric template is generated using the extracted first feature set.
摘要:
The invention relates to a method for generating a representation of a finger print minutiae information. The invention also relates to a method for generating a representation of a finger print for biometric template protection purposes Biometric template protection techniques provide technological means to protect the privacy of biometric reference information stored in biometric. systems These methods stand in sharp contrast to approaches where biometric information is protected only by legislation and procedures around storage facilities. These systems are not reliable as they are susceptible to human and procedural errors. Template protection guarantees the protection of biometric information without the assumption that individuals are trusted or procedures are properly implemented.
摘要:
A basic idea of the present invention is to selectively employ one of at least two different feature extraction processes when generating a biometric template of an individual. An individual offers a physiological property, such as a fingerprint, an iris, an ear, a face, etc., from which biometric data can be derived, to a sensor of an enrolment authority. In the following, the property to be discussed will be fingerprints, even though any suitable biometric property may be used. From the fingerprint, a positional reference point of the biometric data is derived. The derivation of the positional reference point may be accomplished using any appropriate method out of a number of known methods. Such a reference point could be the location of a core, a delta, a weighted average of minutiae coordinates, or alike. Typically, the reference point includes a core of a fingerprint expressed as a three-dimensional coordinate denoted by means of xr, yr, and angle αr. A contribution indicator is calculated for the derived positional reference point, and it is determined whether the derived positional reference point can be considered reliable. Depending on the reliability of the derived reference point, one of the two different feature extraction processes is selected; either the first feature set is extracted using a method which is invariant of the derived reference point, or a method is used taking into account the derived reference point. The better the estimation of the reference point is, the more reliable the reference point-dependent extraction method is. Finally, the biometric template is generated using the extracted first feature set.
摘要:
The invention relates to localizing the position of a person speaking by using pictures of a pattern (21) on an object (20) worn by the person. The object (20) carries a complex pattern (21) that is optimized for determining the orientation of the object (20), the distance from the object to a microphone device (14) and/or to a camera (11). Moreover, the pattern (21) may be arranged for identifying the person carrying the object (20). The determination of the position of the person carrying the object (20) may be used to enhance speech recognition (SR) and/or to provide hands-free voice control of devices (DC), e.g. in hospitals or in industrial settings.
摘要:
Present inventions relates to a method of digital rights management for content data, comprising the steps of: obtaining (102) at least one bio metric measurement data, modifying (106) the biometric measurement data by using a transformation scheme, and associating (108) the modified biometric measurement data with the content data.
摘要:
This invention relates to physical uncloneable function (PUF) devices for determining authenticity of an item, systems for determining authenticity of a physical item, and methods for determining authenticity of an item. A PUF pattern of the PUF device is damaged when using the item for the first time.
摘要:
There is described a method of providing certification functionality. The method involves: (a) at a certification authority (20), generating a secret P, applying the secret P to sign a data string (mA) on behalf of a first device (30, A), and communicating (50) the signed string to the first device (30, A); (b) communicating (60) secret information from the authority (20) to a second device (B, 40), the secret information for verifying authenticity of the string (mA), the second device (40, B) being operable to use the secret information to generate a second key (kAB2); (c) generating a first key (kAB1) at the first device (30, A) using public information pertaining to the second device (40, B), said first key (kABI) being susceptible to generation provided that the string is authentic; (d) applying the second key (kAB2)to protect data for communication from the second device (40, B) to the first device (30, A); and (e) at the first device (30, A), applying the first key (kAB1)to access the protected data communicated from the second device (40, B) to the first device (30, A).