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1. 发明授权

US10482275B2 Implementing access control by system-on-chip 有权
公开(公告)号：US10482275B2
公开(公告)日：2019-11-19
申请号：US15111972
申请日：2015-01-27
申请人： Cryptography Research, Inc.
发明人： Craig E. Hampel , Jean-Michel Cioranesco , Rodrigo Portella do Canto , Guilherme Ozari de Almeida
IPC分类号： G06F21/62 , G06F21/44 , G06F21/57 , G06F21/85 , H04L29/06 , G06F21/75
摘要： Systems and methods for implementing access control by systems-on-chip (SoCs). An example SoC may comprise: an access control unit comprising a secure memory for storing access control data, the access control unit to: receive a message comprising an access control data item; store the access control data item in the secure memory; perform at least one of: authenticating the message using a message digest function, or validating contents of the secure memory by comparing a stored reference value with a calculated value of a message digest function of the contents of the secure memory; and control, in view of the access control data item, access by an initiator device to a target device.

2. 发明授权

US10461925B2 Hardware masked substitution box for the data encryption standard 有权
公开(公告)号：US10461925B2
公开(公告)日：2019-10-29
申请号：US15673284
申请日：2017-08-09
申请人： Cryptography Research, Inc.
发明人： Matthew Pond Baker , Elena Trichina , Jean-Michel Cioranesco , Michael Hutter
IPC分类号： H04L9/06 , G06F21/60 , H04L9/00 , G06F21/55 , G06F21/75
摘要： An integrated circuit may implement a masked substitution box that includes a counter that generates counter values. An input mask component may generate unmasked input values based on a combination of respective counter values and an input mask value. Furthermore, a substitution function component may receive the unmasked input values and may generate output values based on respective unmasked input values and a substitution function. An output mask component may generate masked output values based on a combination of respective output values and an output mask value. The masked output values may be stored at memory elements.

3. 发明申请

US20160028728A1 IMPLEMENTING ACCESS CONTROL BY SYSTEM-ON-CHIP 有权
标题翻译：通过系统芯片实现访问控制
公开(公告)号：US20160028728A1
公开(公告)日：2016-01-28
申请号：US14811473
申请日：2015-07-28
申请人： CRYPTOGRAPHY RESEARCH, INC.
发明人： Craig E. Hampel , Jean-Michel Cioranesco , Rodrigo Portella do Canto , Guilherme Ozari de Almeida , Christopher Gori
IPC分类号： H04L29/06 , G06F12/14
CPC分类号： H04L63/0876 , G06F12/1408 , G06F21/6209 , G06F21/71 , G06F2212/1052 , G06F2221/2105 , G06F2221/2141 , G06F2221/2145 , H04L9/3234 , H04L9/3242 , H04L9/3247 , H04L63/10
摘要： Systems and methods for implementing access control by systems-on-chip (SoCs). An example SoC may comprise an access control unit employed to: receive a message comprising an access control data item; validate the message using a value of a message digest function of contents of the message and a value of a state variable reflecting a state of communications between the access control unit and a programming agent that has initiated the message, wherein the value of the state variable is derived from a previous value of the message digest function calculated within a current communication session between the access control unit and the programming agent; update the state variable using the value of the message digest function of the contents of the message; and control, using the access control data item, access by an initiator device to a target device.
摘要翻译：通过片上系统（SoC）实现访问控制的系统和方法。示例SoC可以包括访问控制单元，其用于：接收包括访问控制数据项的消息; 使用所述消息的内容的消息摘要功能的值和反映所述访问控制单元与已经发起所述消息的编程代理之间的通信状态的状态变量的值来验证所述消息，其中，所述状态变量的值从在访问控制单元和编程代理之间的当前通信会话中计算的消息摘要功能的先前值导出; 使用消息内容的消息摘要功能的值更新状态变量; 并且使用访问控制数据项来控制由发起者设备到目标设备的访问。

4. 发明授权

US11018849B2 Hardware masked substitution box for the data encryption standard 有权
公开(公告)号：US11018849B2
公开(公告)日：2021-05-25
申请号：US16666017
申请日：2019-10-28
申请人： Cryptography Research, Inc.
发明人： Matthew Pond Baker , Elena Trichina , Jean-Michel Cioranesco , Michael Hutter
IPC分类号： H04L9/06 , G06F21/55 , G06F21/75 , G06F21/60 , H04L9/00
摘要： An integrated circuit may implement a masked substitution box that includes substitution function components, a decoder, and a logic component. Each of the substitution function components may receive a same input value and a different mask value and may generate a respective output mask value based on the same input value and respective different mask value The decoder may receive an input mask value and generate a decoded output value that is based on the received input mask value. The logic component may select one of the output mask values from one of the substitution function components based on the decoded output value.

5. 发明申请

US20180062830A1 HARDWARE MASKED SUBSTITUTION BOX FOR THE DATA ENCRYPTION STANDARD 审中-公开
公开(公告)号：US20180062830A1
公开(公告)日：2018-03-01
申请号：US15673284
申请日：2017-08-09
申请人： Cryptography Research, Inc.
发明人： Matthew Pond Baker , Elena Trichina , Jean-Michel Cioranesco , Michael Hutter
IPC分类号： H04L9/06 , G06F21/60 , H04L9/00
CPC分类号： H04L9/0631 , G06F21/556 , G06F21/602 , G06F21/755 , H04L9/003 , H04L9/0618 , H04L2209/12
摘要： An integrated circuit may implement a masked substitution box that includes a counter that generates counter values. An input mask component may generate unmasked input values based on a combination of respective counter values and an input mask value. Furthermore, a substitution function component may receive the unmasked input values and may generate output values based on respective unmasked input values and a substitution function. An output mask component may generate masked output values based on a combination of respective output values and an output mask value. The masked output values may be stored at memory elements.

6. 发明授权

US09853974B2 Implementing access control by system-on-chip 有权
公开(公告)号：US09853974B2
公开(公告)日：2017-12-26
申请号：US14811473
申请日：2015-07-28
申请人： CRYPTOGRAPHY RESEARCH, INC.
发明人： Craig E. Hampel , Jean-Michel Cioranesco , Rodrigo Portella do Canto , Guilherme Ozari de Almeida , Christopher Gori
IPC分类号： H04L29/06 , G06F12/14
CPC分类号： H04L63/0876 , G06F12/1408 , G06F21/6209 , G06F21/71 , G06F2212/1052 , G06F2221/2105 , G06F2221/2141 , G06F2221/2145 , H04L9/3234 , H04L9/3242 , H04L9/3247 , H04L63/10
摘要： Systems and methods for implementing access control by systems-on-chip (SoCs). An example SoC may comprise an access control unit employed to: receive a message comprising an access control data item; validate the message using a value of a message digest function of contents of the message and a value of a state variable reflecting a state of communications between the access control unit and a programming agent that has initiated the message, wherein the value of the state variable is derived from a previous value of the message digest function calculated within a current communication session between the access control unit and the programming agent; update the state variable using the value of the message digest function of the contents of the message; and control, using the access control data item, access by an initiator device to a target device.

7. 发明申请

US20210058228A1 PROTECTING BLOCK CIPHER COMPUTATION OPERATIONS FROM EXTERNAL MONITORING ATTACKS 有权
公开(公告)号：US20210058228A1
公开(公告)日：2021-02-25
申请号：US17009361
申请日：2020-09-01
申请人： Cryptography Research, Inc.
发明人： Jean-Michel Cioranesco , Elena Trichina , Elke De Mulder , Matthew Pond Baker
IPC分类号： H04L9/00 , H04L9/14 , H04L9/06
摘要： Systems and methods for protecting block cipher computation operations, from external monitoring attacks. An example apparatus for implementing a block cipher may comprise: a first register configured to store a first pre-computed mask value represented by a combination of a first random value and a second random value; a second register configured to store an output mask value, wherein the output mask value is an inverse permutation function of the first random value; a third register configured to store a second pre-computed mask value represented by a combination the first pre-computed mask value and a permutation function of the output mask value; a fourth register configured to store an input mask value, wherein the input mask value is a combination of an expansion function of the first random value and a key mask value; a non-linear transformation circuit configured to apply the expansion function to a masked round state, perform a non-linear transformation of a combination of a masked key with an output of the expansion function, and apply the permutation function to the output of the non-linear transformation, wherein the non-linear transformation is defined using the input mask value stored in the fourth register and the output mask value stored in the second register; and two round feedback circuits configured to swap the masked round state produced by the non-linear transformation and combine the masked round state with the first pre-computed mask value stored in the first register and the second pre-computed mask value stored in the third register.

8. 发明申请

US20200067695A1 HARDWARE MASKED SUBSTITUTION BOX FOR THE DATA ENCRYPTION STANDARD 审中-公开
公开(公告)号：US20200067695A1
公开(公告)日：2020-02-27
申请号：US16666017
申请日：2019-10-28
申请人： Cryptography Research, Inc.
发明人： Matthew Pond Baker , Elena Trichina , Jean-Michel Cioranesco , Michael Hutter
IPC分类号： H04L9/06 , H04L9/00 , G06F21/60 , G06F21/75 , G06F21/55
摘要： An integrated circuit may implement a masked substitution box that includes substitution function components, a decoder, and a logic component. Each of the substitution function components may receive a same input value and a different mask value and may generate a respective output mask value based on the same input value and respective different mask value The decoder may receive an input mask value and generate a decoded output value that is based on the received input mask value. The logic component may select one of the output mask values from one of the substitution function components based on the decoded output value.

9. 发明申请

US20180062828A1 PROTECTING BLOCK CIPHER COMPUTATION OPERATIONS FROM EXTERNAL MONITORING ATTACKS 审中-公开
公开(公告)号：US20180062828A1
公开(公告)日：2018-03-01
申请号：US15682881
申请日：2017-08-22
申请人： Cryptography Research, Inc.
发明人： Jean-Michel Cioranesco , Elena Trichina , Elke De Mulder , Matthew Pond Baker
IPC分类号： H04L9/00 , H04L9/14 , H04L9/06
摘要： Systems and methods for protecting block cipher computation operations, from external monitoring attacks. An example apparatus for implementing a block cipher may comprise: a first register configured to store a first pre-computed mask value represented by a combination of a first random value and a second random value; a second register configured to store an output mask value, wherein the output mask value is an inverse permutation function of the first random value; a third register configured to store a second pre-computed mask value represented by a combination the first pre-computed mask value and a permutation function of the output mask value; a fourth register configured to store an input mask value, wherein the input mask value is a combination of an expansion function of the first random value and a key mask value; a non-linear transformation circuit configured to apply the expansion function to a masked round state, perform a non-linear transformation of a combination of a masked key with an output of the expansion function, and apply the permutation function to the output of the non-linear transformation, wherein the non-linear transformation is defined using the input mask value stored in the fourth register and the output mask value stored in the second register; and two round feedback circuits configured to swap the masked round state produced by the non-linear transformation and combine the masked round state with the first pre-computed mask value stored in the first register and the second pre-computed mask value stored in the third register.

10. 发明申请

US20170061121A1 LOW OVERHEAD RANDOM PRE-CHARGE COUNTERMEASURE FOR SIDE-CHANNEL ATTACKS 审中-公开
标题翻译：侧向通道攻击的低负荷随机预先计数
公开(公告)号：US20170061121A1
公开(公告)日：2017-03-02
申请号：US15245507
申请日：2016-08-24
申请人： Cryptography Research, Inc
发明人： Roberto Rivoir , Elke De Mulder , Jean-Michel Cioranesco
IPC分类号： G06F21/55
CPC分类号： G06F21/755 , G06F2221/034
摘要： A side-channel attack resistant circuit topology for performing logic functions. This topology includes combinatorial logic to perform the at least one logic function. A logic input selector alternately supplies, in response to a first timing reference signal, an input to the combinatorial logic with noise generating input values and valid input values. A first latch input selector alternately supplies, in response to the first timing reference signal, a first memory element input with noise generating input values and valid logic output values. The valid logic output values are received from the combinatorial logic. A first memory element latches the valid logic output values in response to a second timing reference signal.
摘要翻译：用于执行逻辑功能的侧信道攻击电路拓扑。该拓扑包括用于执行至少一个逻辑功能的组合逻辑。逻辑输入选择器响应于第一定时参考信号交替地提供具有噪声产生输入值和有效输入值的组合逻辑的输入。第一锁存器输入选择器响应于第一定时参考信号交替地提供输入噪声产生输入值和有效逻辑输出值的第一存储器元件。从组合逻辑接收有效的逻辑输出值。响应于第二定时参考信号，第一存储器元件锁存有效的逻辑输出值。

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