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公开(公告)号：US20160026990A1
公开(公告)日：2016-01-28
申请号：US14752698
申请日：2015-06-26
申请人： Square, Inc.
IPC分类号： G06Q20/20 , G06Q20/32 , G06Q20/40 , G06F3/0482 , G06F3/0484
摘要： A point of sale system has a display for receiving touch inputs, a controller to receive the touch inputs from the display, and a secure controller to receive touch input data from the controller. The system also has a card interface module and a contactless interface module to provide encrypted data to the secure controller. The secure controller can operate in either a secure mode or a non-secure mode. When a non-secure mode is engaged, the secure controller provides the touch input data to a processor. When a secure mode is engaged, the secure controller blocks at least a portion of the touch input data from the processor.
摘要翻译： 销售点系统具有用于接收触摸输入的显示器，用于从显示器接收触摸输入的控制器以及从控制器接收触摸输入数据的安全控制器。 该系统还具有一个卡接口模块和一个非接触式接口模块，用于向安全控制器提供加密数据。 安全控制器可以以安全模式或非安全模式运行。 当使用非安全模式时，安全控制器将触摸输入数据提供给处理器。 当使用安全模式时，安全控制器阻止来自处理器的触摸输入数据的至少一部分。
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公开(公告)号：US10430616B2
公开(公告)日：2019-10-01
申请号：US15859036
申请日：2017-12-29
申请人： Square, Inc.
发明人： Malcolm Ronald Smith , Kshitiz Vadera , Mark Phillip Zagrodney , Kevin Ka Wai Ng , Afshin Rezayee
摘要： Processor system with a general purpose processor and a cryptographic processor dedicated to performing cryptographic operations and enforcing the security of critical security parameters. The cryptographic processor prevents exposure of critical security parameters outside the cryptographic processor itself, and instead implements a limited scripting engine, which can be used by the general purpose processor to execute operations that require the critical security parameters.
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公开(公告)号：US10263793B2
公开(公告)日：2019-04-16
申请号：US15942288
申请日：2018-03-30
申请人： Square, Inc.
发明人： Afshin Rezayee , Yue Yang , Malcolm Ronald Smith
摘要： A device may include a physically unclonable function (PUF) source that has at least one fuse embedded in the device. The PUF source may be responsive to an input for transmitting a signal through the fuse and providing a PUF value based on a measurement of such signal. The device also has circuitry that is configured to modify the fuse by transmitting a signal of sufficiently high current or voltage through the fuse to change its resistance, thereby changing a response of the PUF source to the input.
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公开(公告)号：US20200051062A1
公开(公告)日：2020-02-13
申请号：US16593770
申请日：2019-10-04
申请人： Square, Inc.
发明人： Jeremy Wade , William Hardy , Malcolm Ronald Smith , Afshin Rezayee , Yue Yang
摘要： An electronic device may include a printed circuit board having a physically unclonable function (PUF) source. The electronic device may also include an integrated circuit (IC) chip positioned on the printed circuit board, and the first PUF source may be embedded in or formed on the printed circuit board external to the IC chip. The IC chip has processing circuitry that is configured to determine PUF data based on the PUF source. The processing circuitry is further configured to determine a cryptographic key or authentication token based on the PUF data and to perform at least one secure operation using the cryptographic key or authentication token.
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公开(公告)号：US10474846B1
公开(公告)日：2019-11-12
申请号：US15693454
申请日：2017-08-31
申请人： Square, Inc.
发明人： Afshin Rezayee , Malcolm Ronald Smith , Yue Yang
摘要： A transaction device includes circuitry that provides a power supply to a processor of the transaction device. Attackers may attempt to glitch the processor power supply in a manner that causes processor to operate incorrectly such as by skipping instructions. A monitoring circuit may be coupled to the processor power supply circuitry to identify conditions that are indicative of a glitch attempt. Glitch attempts may be stored in a memory and reported to the processor to induce the execution of counter-measures.
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公开(公告)号：US10255603B1
公开(公告)日：2019-04-09
申请号：US15693456
申请日：2017-08-31
申请人： Square, Inc.
发明人： Afshin Rezayee , Malcolm Ronald Smith , Yue Yang
摘要： A transaction device includes a bootloader that a processing unit executes during device startup. The bootloader causes the processing unit to access values from a persistent memory that are relevant to whether a glitch has occurred on a power supply for the processing unit. Based on the values that are acquired from the persistent memory, the processing unit may implement countermeasures, such as disabling certain device operations or delaying the device booting process.
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公开(公告)号：US20190028284A1
公开(公告)日：2019-01-24
申请号：US15942288
申请日：2018-03-30
申请人： Square, Inc.
发明人： Afshin Rezayee , Yue Yang , Malcolm Ronald Smith
摘要： A device may include a physically unclonable function (PUF) source that has at least one fuse embedded in the device. The PUF source may be responsive to an input for transmitting a signal through the fuse and providing a PUF value based on a measurement of such signal. The device also has circuitry that is configured to modify the fuse by transmitting a signal of sufficiently high current or voltage through the fuse to change its resistance, thereby changing a response of the PUF source to the input.
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公开(公告)号：US20180247084A1
公开(公告)日：2018-08-30
申请号：US15859036
申请日：2017-12-29
申请人： Square, Inc.
发明人： Malcolm Ronald Smith , Kshitiz Vadera , Mark Phillip Zagrodney , Kevin Ka Wai Ng , Afshin Rezayee
IPC分类号： G06F21/72
CPC分类号： G06F21/72 , G06F21/556 , H04L9/0894 , H04L9/3236 , H04L63/0492 , H04L63/0853 , H04L2463/102
摘要： Processor system with a general purpose processor and a cryptographic processor dedicated to performing cryptographic operations and enforcing the security of critical security parameters. The cryptographic processor prevents exposure of critical security parameters outside the cryptographic processor itself, and instead implements a limited scripting engine, which can be used by the general purpose processor to execute operations that require the critical security parameters.
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公开(公告)号：US10438190B2
公开(公告)日：2019-10-08
申请号：US15942299
申请日：2018-03-30
申请人： Square, Inc.
发明人： Jeremy Wade , William Hardy , Malcolm Ronald Smith , Afshin Rezayee , Yue Yang
摘要： An electronic device may include a printed circuit board having a physically unclonable function (PUF) source. The electronic device may also include an integrated circuit (IC) chip positioned on the printed circuit board, and the first PUF source may be embedded in or formed on the printed circuit board external to the IC chip. The IC chip has processing circuitry that is configured to determine PUF data based on the PUF source. The processing circuitry is further configured to determine a cryptographic key or authentication token based on the PUF data and to perform at least one secure operation using the cryptographic key or authentication token.
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公开(公告)号：US20190026724A1
公开(公告)日：2019-01-24
申请号：US15942299
申请日：2018-03-30
申请人： Square, Inc.
发明人： Jeremy Wade , William Hardy , Malcolm Ronald Smith , Afshin Rezayee , Yue Yang
CPC分类号： G06Q20/341 , G06Q20/3226 , G06Q20/3278 , G07F7/0873 , G07F7/1016 , H04L9/0866 , H04L9/3278 , H04L2209/56 , H04L2209/805
摘要： An electronic device may include a printed circuit board having a physically unclonable function (PUF) source. The electronic device may also include an integrated circuit (IC) chip positioned on the printed circuit board, and the first PUF source may be embedded in or formed on the printed circuit board external to the IC chip. The IC chip has processing circuitry that is configured to determine PUF data based on the PUF source. The processing circuitry is further configured to determine a cryptographic key or authentication token based on the PUF data and to perform at least one secure operation using the cryptographic key or authentication token.
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