Memory area protection circuit
    1.
    发明授权
    Memory area protection circuit 有权
    存储区保护电路

    公开(公告)号:US08782367B2

    公开(公告)日:2014-07-15

    申请号:US11958958

    申请日:2007-12-18

    IPC分类号: G06F12/00

    CPC分类号: G06F12/1483 G06F21/79

    摘要: A circuit for controlling the access to at least one area of a memory accessible by a program execution unit, including a first instruction address input; at least one second data address input, the addresses coming from the execution unit; at least one function of correlation of these addresses; and at least one output of a bit for validating the fulfilling of conditions set by the correlation function.

    摘要翻译: 一种用于控制对由程序执行单元可访问的存储器的至少一个区域的访问的电路,包括第一指令地址输入; 至少一个第二数据地址输入,来自执行单元的地址; 至少一个这些地址相关的功能; 以及用于验证由相关函数设置的条件的满足的位的至少一个输出。

    MEMORY AREA PROTECTION CIRCUIT
    2.
    发明申请
    MEMORY AREA PROTECTION CIRCUIT 有权
    存储区保护电路

    公开(公告)号:US20080155188A1

    公开(公告)日:2008-06-26

    申请号:US11958958

    申请日:2007-12-18

    IPC分类号: G06F9/30 G06F12/02

    CPC分类号: G06F12/1483 G06F21/79

    摘要: A circuit for controlling the access to at least one area of a memory accessible by a program execution unit, including a first instruction address input; at least one second data address input, the addresses coming from the execution unit; at least one function of correlation of these addresses; and at least one output of a bit for validating the fulfilling of conditions set by the correlation function.

    摘要翻译: 一种用于控制对由程序执行单元可访问的存储器的至少一个区域的访问的电路,包括第一指令地址输入; 至少一个第二数据地址输入,来自执行单元的地址; 至少一个这些地址相关的功能; 以及用于验证由相关函数设置的条件的满足的位的至少一个输出。

    Methods and data processing systems for sharing a clock between non-secured and secured tasks
    3.
    发明授权
    Methods and data processing systems for sharing a clock between non-secured and secured tasks 有权
    用于在非安全和受保护任务之间共享时钟的方法和数据处理系统

    公开(公告)号:US07779289B2

    公开(公告)日:2010-08-17

    申请号:US11707228

    申请日:2007-02-14

    IPC分类号: G06F1/04

    摘要: A method and a system of sharing of a clock by an electronic circuit between at least one first task clocked by at least one first counter and at least one second task clocked by a second counter, the two counters varying at the rate of said clock, the content of the first counter plus or minus an offset value being, on each execution of the second task, assigned to the second counter.

    摘要翻译: 一种通过电子电路在由至少一个第一计数器计时的至少一个第一任务和由第二计数器计时的至少一个第二任务之间共享时钟的方法和系统,所述两个计数器以所述时钟的速率变化, 在第二任务的每次执行时,第一计数器的加或减偏移值分配给第二计数器。

    Secure time measurement electronic device and method
    6.
    发明授权
    Secure time measurement electronic device and method 有权
    安全的时间测量电子设备和方法

    公开(公告)号:US07075447B2

    公开(公告)日:2006-07-11

    申请号:US10782550

    申请日:2004-02-18

    IPC分类号: G08B1/00

    摘要: An electronic circuit comprising a first counter clocked by a clock signal provided to have a first period and provided by an oscillator external to the circuit, and comprising a second counter clocked with a second period by an oscillator internal to the circuit, the second counter being reset each time the content of the first counter is a multiple of a first predetermined value, and a means for activating an alert signal when the second counter reaches a second predetermined value such that the product of the second predetermined value by the second period is greater than the product of the first predetermined value by the first period.

    摘要翻译: 一种电子电路,包括由提供为具有第一周期并由电路外部的振荡器提供的时钟信号时钟的第一计数器,并且包括由电路内部的振荡器以第二周期计时的第二计数器,第二计数器 每当第一计数器的内容是第一预定值的倍数时复位,以及用于当第二计数器达到第二预定值时激活警报信号的装置,使得第二预定值乘第二周期的乘积更大 比第一个预定值乘以第一个周期的乘积。

    PROTECTION OF MEMORY AREAS
    7.
    发明申请
    PROTECTION OF MEMORY AREAS 有权
    保护记忆领域

    公开(公告)号:US20080155274A1

    公开(公告)日:2008-06-26

    申请号:US11958989

    申请日:2007-12-18

    IPC分类号: H04L9/28

    摘要: A method for loading a program, contained in at least a first memory, into a second memory accessible by an execution unit, in which the program is in a cyphered form in the first memory, a circuit for controlling the access to the second memory is configured from program initialization data, instructions of the program, and at least initialization data being decyphered to be transferred into the second memory after configuration of the circuit.

    摘要翻译: 一种用于将包含在至少第一存储器中的程序加载到执行单元可访问的第二存储器中的方法,其中程序处于第一存储器中的加密形式,用于控制对第二存储器的访问的电路是 由程序初始化数据,程序的指令,以及至少初始化数据被解密以在电路配置之后被传送到第二存储器中。

    Data transmission method using an acknowledgement code comprising hidden authentication bits
    8.
    发明授权
    Data transmission method using an acknowledgement code comprising hidden authentication bits 有权
    使用包含隐藏认证位的确认码的数据传输方法

    公开(公告)号:US08688983B2

    公开(公告)日:2014-04-01

    申请号:US13450347

    申请日:2012-04-18

    IPC分类号: H04L29/06

    摘要: A method for transmitting data between a first and a second point comprises the steps of transmitting data, from the first to the second point, together with a signature comprising bits of a first authentication code, and transmitting an acknowledgement, from the second to the first point. The length of the first authentication code is greater than the length of the signature and the first authentication code comprises hidden authentication bits. The acknowledgement is produced by using hidden authentication bits of a second authentication code presumed to be identical to the first, produced at the second point.

    摘要翻译: 一种在第一和第二点之间发送数据的方法包括以下步骤:从第一到第二点与包括第一认证码的比特的签名一起发送数据,并从第二到第一点发送确认 点。 第一认证码的长度大于签名的长度,并且第一认证码包括隐藏的认证位。 通过使用假设与第一认证码相同的第二认证码的隐藏认证比特来产生确认,在第二点产生。

    DATA TRANSMISSION METHOD USING AN ACKNOWLEDGEMENT CODE COMPRISING HIDDEN AUTHENTICATION BITS
    10.
    发明申请
    DATA TRANSMISSION METHOD USING AN ACKNOWLEDGEMENT CODE COMPRISING HIDDEN AUTHENTICATION BITS 有权
    使用包含隐藏认证位置的确认码的数据传输方法

    公开(公告)号:US20120204034A1

    公开(公告)日:2012-08-09

    申请号:US13450347

    申请日:2012-04-18

    IPC分类号: H04L9/32

    摘要: A method for transmitting data between a first and a second point comprises the steps of transmitting data, from the first to the second point, together with a signature comprising bits of a first authentication code, and transmitting an acknowledgement, from the second to the first point. The length of the first authentication code is greater than the length of the signature and the first authentication code comprises hidden authentication bits. The acknowledgement is produced by using hidden authentication bits of a second authentication code presumed to be identical to the first, produced at the second point.

    摘要翻译: 一种在第一和第二点之间发送数据的方法包括以下步骤:从第一到第二点与包括第一认证码的比特的签名一起发送数据,并从第二到第一点发送确认 点。 第一认证码的长度大于签名的长度,并且第一认证码包括隐藏的认证位。 通过使用假设与第一认证码相同的第二认证码的隐藏认证比特来产生确认,在第二点产生。