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公开(公告)号：US09350330B2
公开(公告)日：2016-05-24
申请号：US13988919
申请日：2011-11-23
CPC分类号： H03K3/037 , G06F7/588 , H04L9/0866
摘要： A physical unclonable function is provided 100, comprising a plurality of bus-keepers 110, each bus-keeper of the plurality of bus-keepers 110 being configured to settle into one of at least two different stable states upon power-up, the particular stable state into which a particular bus-keeper of the plurality of bus-keepers settles being dependent at least in part upon the at least partially random physical characteristics of the particular bus-keeper, and a reading circuit 120 for reading the plurality of stable states into which the plurality of bus-keepers settled after a power-up, the plurality of bus-keepers being read-only.
摘要翻译： 提供100的物理不可克隆功能，其包括多个总线保持器110，多个总线保持器110中的每个总线保持器被配置为在上电时稳定为至少两个不同稳定状态之一，特别稳定 至少部分地依赖于特定总线保持器的至少部分随机的物理特性，以及用于读取多个稳定状态的读取电路120的状态，多个总线保持器中的特定总线保持器所在的状态 所述多个总线保持器在上电之后稳定，所述多个总线保持器是只读的。
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公开(公告)号：US20130194886A1
公开(公告)日：2013-08-01
申请号：US13877656
申请日：2011-09-28
IPC分类号： G11C7/24
CPC分类号： G11C5/148 , G06F7/588 , G11C5/14 , G11C7/20 , G11C7/24 , H04L9/0866 , H04L9/3278
摘要： An electric physical unclonable function (PUF) (100) is provided comprising a semiconductor memory element (110) connectable to a PUF control means for reading content from the memory element and for deriving at least in part from said content a digital identifier, such as a secret key. Upon powering the memory element it settles into one of at least two different stable states. The particular stable state into which the memory element settles is dependent at least in part upon random physical characteristics of the memory element introduced during manufacture of the memory element. Settling of the memory element is further dependent upon a control input (112) of the memory element. The electric physical unclonable function comprises shielding means (142, 144) for shielding, during a time period including the power-up of the memory element and lasting at least until the settling of the memory element, the control input from receiving control signals upon which the particular stable state into which the memory element settles is dependent. In this way, the dependency of the memory element on its physical characteristics is improved, and dependency on possibly irreproducible control signals is reduced.
摘要翻译： 提供电物理不可克隆功能（PUF）（100），其包括可连接到PUF控制装置的半导体存储元件（110），用于从存储元件读取内容，并且至少部分地从所述内容导出数字标识符，诸如 秘密钥匙 在为存储器元件供电时，它稳定在至少两个不同的稳定状态之一中。 存储元件稳定的特定稳定状态至少部分地取决于在存储元件的制造期间引入的存储元件的随机物理特性。 存储器元件的稳定还取决于存储元件的控制输入（112）。 电物理不可克隆功能包括屏蔽装置（142,144），用于在包括存储元件的上电的持续时间期间屏蔽屏蔽装置，并持续至少直到存储元件的稳定，控制输入从其上接收控制信号 存储元件稳定的特定稳定状态是依赖的。 以这种方式，存储元件对其物理特性的依赖性得到改善，并且减少了可能不可再生的控制信号的依赖性。
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公开(公告)号：US08848477B2
公开(公告)日：2014-09-30
申请号：US13877656
申请日：2011-09-28
IPC分类号： G11C5/14
CPC分类号： G11C5/148 , G06F7/588 , G11C5/14 , G11C7/20 , G11C7/24 , H04L9/0866 , H04L9/3278
摘要： An electric physical unclonable function (PUF) (100) is provided comprising a semiconductor memory element (110) connectable to a PUF control means for reading content from the memory element and for deriving at least in part from said content a digital identifier, such as a secret key. Upon powering the memory element it settles into one of at least two different stable states. The particular stable state into which the memory element settles is dependent at least in part upon random physical characteristics of the memory element introduced during manufacture of the memory element. Settling of the memory element is further dependent upon a control input (112) of the memory element. The electric physical unclonable function comprises shielding means (142, 144) for shielding, during a time period including the power-up of the memory element and lasting at least until the settling of the memory element, the control input from receiving control signals upon which the particular stable state into which the memory element settles is dependent. In this way, the dependency of the memory element on its physical characteristics is improved, and dependency on possibly irreproducible control signals is reduced.
摘要翻译： 提供电物理不可克隆功能（PUF）（100），其包括可连接到PUF控制装置的半导体存储元件（110），用于从存储元件读取内容，并且至少部分地从所述内容导出数字标识符，诸如 秘密钥匙 在为存储器元件供电时，它稳定在至少两个不同的稳定状态之一中。 存储元件稳定的特定稳定状态至少部分地取决于在存储元件的制造期间引入的存储元件的随机物理特性。 存储器元件的稳定还取决于存储元件的控制输入（112）。 电物理不可克隆功能包括屏蔽装置（142,144），用于在包括存储元件的上电的持续时间期间屏蔽屏蔽装置，并持续至少直到存储元件的稳定，控制输入从其上接收控制信号 存储元件稳定的特定稳定状态是依赖的。 以这种方式，存储元件对其物理特性的依赖性得到改善，并且减少了可能不可再生的控制信号的依赖性。
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公开(公告)号：US20130234771A1
公开(公告)日：2013-09-12
申请号：US13988919
申请日：2011-11-23
IPC分类号： H03K3/037
CPC分类号： H03K3/037 , G06F7/588 , H04L9/0866
摘要： A physical unclonable function is provided 100, comprising a plurality of bus-keepers 110, each bus-keeper of the plurality of bus-keepers 110 being configured to settle into one of at least two different stable states upon power-up, the particular stable state into which a particular bus-keeper of the plurality of bus-keepers settles being dependent at least in part upon the at least partially random physical characteristics of the particular bus-keeper, and a reading circuit 120 for reading the plurality of stable states into which the plurality of bus-keepers settled after a power-up, the plurality of bus-keepers being read-only.
摘要翻译： 提供100的物理不可克隆功能，其包括多个总线保持器110，多个总线保持器110中的每个总线保持器被配置为在上电时稳定为至少两个不同稳定状态之一，特别稳定 至少部分地依赖于特定总线保持器的至少部分随机的物理特性，以及用于读取多个稳定状态的读取电路120的状态，多个总线保持器中的特定总线保持器所在的状态 所述多个总线保持器在上电之后稳定，所述多个总线保持器是只读的。
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