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公开(公告)号：US10536413B2
公开(公告)日：2020-01-14
申请号：US15980019
申请日：2018-05-15
申请人： PQ SOLUTIONS LIMITED
发明人： Martin Tomlinson , Andersen Cheng , Cen Jung Tjhai
IPC分类号： H04L12/58
摘要： Systems and methods for direct packet communications and store and forward packet communications are provided that include packets which have attributes which determine the lifetime of the packet contents and these lifetimes are optionally a function of the recipient. Example methods are given featuring the transmission of packets with limited lifetime, the storing and retransmission of packets to one or more recipients and confirmation of deletion of packet contents. It is also shown that cryptography may be employed to ensure that timed presentation of packet contents to recipients takes place and is authenticated by the sender.
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公开(公告)号：US10461936B2
公开(公告)日：2019-10-29
申请号：US15729880
申请日：2017-10-11
申请人： PQ Solutions Limited
发明人： Cen Jung Tjhai , Martin Tomlinson , Andersen Cheng
摘要： Systems and methods for user identity and transaction authentication are described. A user may be authenticated by a terminal configured to process image data of a two-dimensional code to decode key information, the two-dimensional code comprising a cryptographic binding of user credentials including a low-resolution image of the user's face and optionally user biometric data to database user information stored on a secure server. A hash of the two-dimensional code has several digits in common with the hash of the user information stored on the secure server. Authentication may be carried out by computing and comparing the hash values, comparing the high-resolution image of the user's face fetched from the secure server to the user and to the low resolution image embedded in the two dimensional code. The two-dimensional code may be generated to provide access to a restricted area.
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公开(公告)号：US10122710B2
公开(公告)日：2018-11-06
申请号：US14804010
申请日：2015-07-20
申请人： PQ Solutions Limited
发明人： Martin Tomlinson , Cen Jung Tjhai , Andersen Cheng
摘要： Methods and systems are described for binding a data transaction to a person's identity using biometrics. The method comprises the generation of data which includes information associated with a transaction, or an encrypted transaction, between a server and a client device associated with a user, generating authentication data providing an irrevocable binding of the information to biometric characteristics of the user, by capturing biometric input by the user of said authentication data or information associated with the transaction, wherein this information is implanted into the captured data. A predetermined minimum number of quorum portions may be generated from a portion of the data generated or processed by the method, wherein at least a predetermined minimum number of received quorum data portions are required to reconstruct the data portion.
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公开(公告)号：US20210099290A1
公开(公告)日：2021-04-01
申请号：US16588139
申请日：2019-09-30
申请人： PQ Solutions Limited
发明人： Martin TOMLINSON , Cen Jung TJHAI
摘要： Methods are described for constructing a secret key by multiple participants from multiple ciphertexts such that any quorum combination of participants can decrypt their respective ciphertexts and so generate a fixed number of key fragments that can be combined by a recipient to generate the secret key. Worked examples are described showing how the encryption keys for the ciphertexts may be key wrapped using a key encapsulation mechanism for which ciphers that are resistant to attack by a quantum computer may be used. In these cases, a post-quantum quorum system is realised. Methods are described by which the quorum key fragment ciphertexts may be updated so that the original key fragments become invalid without necessitating any change to the secret key.
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公开(公告)号：US10902242B2
公开(公告)日：2021-01-26
申请号：US16599497
申请日：2019-10-11
申请人： PQ Solutions Limited
发明人： Martin Tomlinson , Cen Jung Tjhai , Andersen Cheng
摘要： Methods and systems are described for creating irrefutable binding data for a data file. An input sequence of data elements is derived based on information from the data file. A graphical representation of input regions corresponding to the input sequence of data elements is output on a display, superimposed on captured image data including a visible feature of a user associated with the data file. User input of each data element of the input sequence is captured by tracking the visible feature through the corresponding input regions, and the binding data is created from the captured images as the visible feature is tracked through the input regions.
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公开(公告)号：US10445561B2
公开(公告)日：2019-10-15
申请号：US15711311
申请日：2017-09-21
申请人： PQ Solutions Limited
发明人： Martin Tomlinson , Cen Jung Tjhai , Andersen Cheng
摘要： Methods and systems are described for creating irrefutable binding data for a data file. An input sequence of data elements is derived based on information from the data file. A graphical representation of input regions corresponding to the input sequence of data elements is output on a display, superimposed on captured image data including a visible feature of a user associated with the data file. User input of each data element of the input sequence is captured by tracking the visible feature through the corresponding input regions, and the binding data is created from the captured images as the visible feature is tracked through the input regions.
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