Method and apparatus for masking modulo exponentiation calculations in
an integrated circuit
    5.
    发明授权
    Method and apparatus for masking modulo exponentiation calculations in an integrated circuit 失效
    用于掩蔽集成电路中的模幂运算的方法和装置

    公开(公告)号:US06064740A

    公开(公告)日:2000-05-16

    申请号:US969144

    申请日:1997-11-12

    IPC分类号: G06F7/72 H04L9/00

    CPC分类号: G06F7/723 G06F2207/7261

    摘要: Circuitry which performs modular mathematics to solve the equation C=M.sup.k mod n and n is performed in a manner to mask the exponent k's signature from timing or power monitoring attacks. The modular exponentation function is performed in a normalized manner such that binary ones and zeros in the exponent are calculated by being modulo-squared and modulo-multiplied.

    摘要翻译: 执行模块数学以求解方程C = Mk mod n和n的电路以从定时或功率监视攻击屏蔽指数k的签名的方式来执行。 模式指数函数以归一化方式执行,使得指数中的二进制1和零通过模平方和模乘而计算。

    Universal asynchronous receiver/transmitter (UART) slave device
containing an identifier for communication on a one-wire bus
    6.
    发明授权
    Universal asynchronous receiver/transmitter (UART) slave device containing an identifier for communication on a one-wire bus 失效
    通用异步接收/发送器(UART)从器件包含用于在单线总线上进行通信的标识符

    公开(公告)号:US5862354A

    公开(公告)日:1999-01-19

    申请号:US611035

    申请日:1996-03-05

    IPC分类号: G06F3/02 G06F13/38 G06F13/00

    CPC分类号: G06F13/385

    摘要: A processor system is disclosed wherein said processor system is adapted to communicate over at least one one-wire network utilizing one-wire communications protocol. For the embodiment of the invention in which the processor system acts as a network master, the processor system includes a master UART especially configured to control communications over such network according to one-wire protocol. For the embodiment of the invention in which the processor communicates over two one-wire networks, the processor system includes a first UART which acts as a slave and a second UART which acts as a master.

    摘要翻译: 公开了一种处理器系统,其中所述处理器系统适于通过使用单线通信协议的至少一个单线网络进行通信。 对于其中处理器系统充当网络主机的本发明的实施例,处理器系统包括主UART,其特别地被配置为根据单线协议来控制通过这样的网络的通信。 对于其中处理器通过两个一线网络通信的本发明的实施例,处理器系统包括用作从设备的第一UART和作为主设备的第二UART。