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    Secure self-learning
    1.
    发明公开
    Secure self-learning 失效
    受保护的自学习

    公开(公告)号：EP0688929A3

    公开(公告)日：1997-12-17

    申请号：EP95304357.7

    申请日：1995-06-21

    Applicant: MICROCHIP TECHNOLOGY INC.

    Inventor： Bruwer, Frederick Johannes

    IPC: E05B49/00

    CPC classification number: G07C9/00817 ,  G07C2009/00412 ,  G07C2009/00769 ,  H04L9/0861 ,  H04L2209/34 ,  H04L2209/80 ,  H04L2209/84

    Abstract: A secure learning system for use in the remote control of security devices. A microchip encoder (10) transmits a signal which controls key generation information derived from a seed, a serial number and the operation of an algorithm and a key on an input value. A microchip decoder (12) receives the signal and extracts the key generation information which is then used as a second key, or to generate a second key, optionally with the use of a manufacturer's key which, itself, may be modified. The second key is used for decoding signals in normal operation of the system. By storing a number of parameter sets at the encoder and at the decoder, the encoder can function as any one of a number of different virtual encoders, and the decoder can respond thereto.

    Circuit and its method of operation
    2.
    发明公开
    Circuit and its method of operation 失效
    Schaltkreis和seine Wirkungsweise

    公开(公告)号：EP0708413A1

    公开(公告)日：1996-04-24

    申请号：EP95306977.0

    申请日：1995-10-02

    Applicant: MICROCHIP TECHNOLOGY INC.

    Inventor： Bruwer, Frederick Johannes ,  Pretorius, Pieter Jacobus ,  Dippenaar, Theodor Johannes

    IPC: G06K19/073 ,  G07F7/08

    CPC classification number: G07F7/1008 ,  G06Q20/341 ,  G06Q20/4097 ,  G07F7/082 ,  G07F7/0866 ,  H04L9/3271 ,  H04L2209/56 ,  H04L2209/805

    Abstract: A method of operating a circuit such as an integrated circuit carried on a plastic card which includes the steps of accepting a challenge, and generating a first response to the challenge using a first algorithm which operates on at least the challenge and a secret key derived from information relating to the circuit. The challenge may be generated, and accepted, by the circuit, with a corresponding challenge being generated externally of the circuit. Alternatively, the challenge is generated externally of the circuit and is then accepted by the circuit. A token card may be stored in the circuit and the first response is generated if a decrement command is successfully carried out on the token count.

    Abstract translation: 一种操作诸如携带在塑料卡上的集成电路的电路的方法，其包括接受挑战的步骤，以及使用至少对挑战进行操作的第一算法和从至少导出的秘密密钥产生对挑战的第一响应 有关电路的信息。 电路可能产生并接受挑战，电路外部产生相应的挑战。 或者，挑战是在电路外部产生，然后被电路接受。 令牌卡可以存储在电路中，并且如果在令牌计数上成功地执行减量命令，则产生第一响应。

    Secure self-learning
    4.
    发明公开
    Secure self-learning 失效
    GeschütztesSelbstlernen

    公开(公告)号：EP0688929A2

    公开(公告)日：1995-12-27

    申请号：EP95304357.7

    申请日：1995-06-21

    Applicant: MICROCHIP TECHNOLOGY INC.

    Inventor： Bruwer, Frederick Johannes

    IPC: E05B49/00

    CPC classification number: G07C9/00817 ,  G07C2009/00412 ,  G07C2009/00769 ,  H04L9/0861 ,  H04L2209/34 ,  H04L2209/80 ,  H04L2209/84

    Abstract: A secure learning system for use in the remote control of security devices. A microchip encoder (10) transmits a signal which controls key generation information derived from a seed, a serial number and the operation of an algorithm and a key on an input value. A microchip decoder (12) receives the signal and extracts the key generation information which is then used as a second key, or to generate a second key, optionally with the use of a manufacturer's key which, itself, may be modified. The second key is used for decoding signals in normal operation of the system. By storing a number of parameter sets at the encoder and at the decoder, the encoder can function as any one of a number of different virtual encoders, and the decoder can respond thereto.

    Abstract translation: 一种用于远程控制安全设备的安全学习系统。 微芯片编码器（10）发送控制从种子导出的密钥生成信息，序列号以及算法的操作和输入值的密钥的信号。 微芯片解码器（12）接收该信号并提取密钥生成信息，然后将密钥生成信息用作第二密钥，或者生成第二密钥，可选地使用本身可被修改的制造商密钥。 第二个键用于解码系统正常运行中的信号。 通过在编码器和解码器处存储多个参数组，编码器可以用作多个不同的虚拟编码器中的任何一个，并且解码器可以对其进行响应。

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