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    • 3. 发明授权
    • Microcontroller configured for external memory decryption
    • 微控制器配置为外部存储器解密
    • US08762739B2
    • 2014-06-24
    • US13475789
    • 2012-05-18
    • Eric PlainecassagneGuillaume Descamps
    • Eric PlainecassagneGuillaume Descamps
    • G06F21/00
    • G06F21/72G06F12/1408G06F21/123G06F21/52G06F21/602G06F21/71Y02D10/13
    • In an advanced metering infrastructure environment, software program statements and/or data may be encrypted. A microcontroller unit may include a first cache configured to store a block of encrypted data obtained from an external memory device. A decryption engine may decrypt the block of encrypted data for storage in a second cache. An address alignment module may be configured to receive input from a program counter and to calculate an offset pointer. The offset pointer may indicate a particular word in the block of decrypted data within the second cache for transmission to an instruction register for use by an application program. An address generator may be configured to receive input from the address alignment module and to indicate a block of data in the external memory device to be loaded into the first cache, to thereby replace the encrypted data sent to the decryption engine.
    • 在高级计量基础设施环境中,可以对软件程序语句和/或数据进行加密。 微控制器单元可以包括被配置为存储从外部存储器件获得的加密数据块的第一高速缓存。 解密引擎可以解密加密数据块以存储在第二高速缓存中。 地址对准模块可以被配置为从程序计数器接收输入并计算偏移指针。 偏移指针可以指示第二高速缓存中的解密数据块中的特定字,以传送到指令寄存器以供应用程序使用。 地址发生器可以被配置为从地址对准模块接收输入并指示要加载到第一高速缓存中的外部存储器件中的数据块,从而替换发送到解密引擎的加密数据。
    • 4. 发明申请
    • Microcontroller Configured for External Memory Decryption
    • 微控制器配置为外部存储器解密
    • US20130275766A1
    • 2013-10-17
    • US13475789
    • 2012-05-18
    • Eric PlainecassagneGuillaume Descamps
    • Eric PlainecassagneGuillaume Descamps
    • G06F12/14
    • G06F21/72G06F12/1408G06F21/123G06F21/52G06F21/602G06F21/71Y02D10/13
    • In an advanced metering infrastructure environment, software program statements and/or data may be encrypted. A microcontroller unit may include a first cache configured to store a block of encrypted data obtained from an external memory device. A decryption engine may decrypt the block of encrypted data for storage in a second cache. An address alignment module may be configured to receive input from a program counter and to calculate an offset pointer. The offset pointer may indicate a particular word in the block of decrypted data within the second cache for transmission to an instruction register for use by an application program. An address generator may be configured to receive input from the address alignment module and to indicate a block of data in the external memory device to be loaded into the first cache, to thereby replacing the encrypted data sent to the decryption engine.
    • 在高级计量基础设施环境中,可以对软件程序语句和/或数据进行加密。 微控制器单元可以包括被配置为存储从外部存储器件获得的加密数据块的第一高速缓存。 解密引擎可以解密加密数据块以存储在第二高速缓存中。 地址对准模块可以被配置为从程序计数器接收输入并计算偏移指针。 偏移指针可以指示第二高速缓存中的解密数据块中的特定字,以传送到指令寄存器以供应用程序使用。 地址生成器可以被配置为从地址对准模块接收输入并指示要加载到第一高速缓存中的外部存储器件中的数据块,从而替换发送到解密引擎的加密数据。