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    Key recovery condition encryption and decryption apparatuses
    6.
    发明公开
    Key recovery condition encryption and decryption apparatuses 失效
    Vorrichtung zurVerschlüsselungundEntschlüsselungmitSchlüsselrückgewinnungsbedingung

    公开(公告)号：EP0891053A2

    公开(公告)日：1999-01-13

    申请号：EP98112477.9

    申请日：1998-07-06

    申请人： NEC CORPORATION ,  HITACHI, LTD. ,  FUJITSU LIMITED

    发明人： Miyauchi, Hiroshi ,  Sako, Kazue ,  Yamazaki, Masashi ,  Domyo, Seiichi ,  Tsuchiya, Hiroyoshi ,  Kanno, Seiko ,  Morita, Ichirou ,  Torii, Naoya ,  Ando, Hiroyuki ,  Kuroda, Yasutsugu

    IPC分类号： H04L9/08

    CPC分类号： H04L9/0643 ,  H04L9/0894

    摘要： A key recovery condition encryption apparatus includes a hashing unit, a first concatenating unit, and a condition information encryption unit. The hashing unit calculates a hash value on the basis of a hash function using a key recovery information text serving as information necessary for performing key recovery. The first concatenating unit concatenates the hash value from the hashing unit to the key recovery condition. The condition information encrytion unit encrypts a concatenating result from the first concatenating unit by using a first encryption key. Also is disclosed a key recovery condition decryption apparatus for decrypting the encrypted data from the above encryption apparatus.

    摘要翻译： 密钥恢复条件加密装置包括散列单元，第一连接单元和条件信息加密单元。 哈希单元使用作为执行密钥恢复所必需的信息的密钥恢复信息文本，基于散列函数来计算哈希值。 第一级联单元将散列单元的哈希值连接到密钥恢复条件。 条件信息加密单元通过使用第一加密密钥来加密来自第一连接单元的连接结果。 还公开了一种用于从上述加密装置解密加密数据的密钥恢复条件解密装置。

    Control system for exhaust gas-driven supercharger used in vehicle engine
    7.
    发明公开
    Control system for exhaust gas-driven supercharger used in vehicle engine 失效
    用于汽车发动机使用的排气增压超控机的控制系统

    公开(公告)号：EP0040814A3

    公开(公告)日：1982-05-12

    申请号：EP81103887

    申请日：1981-05-20

    申请人： Hitachi, Ltd.

    发明人： Suzuki, Satoshi ,  Ando, Hiroyuki

    IPC分类号： F02B37/00 ,  F02D23/00

    CPC分类号： F02B37/186 ,  F02D35/027 ,  F02D41/0007 ,  F02D41/26 ,  Y02T10/144

    摘要： A system for controlling an exhaust gasdriven supercharger used in an internal combustion engine for an automotive vehicle includes an exhaust gas bypass passage (48) connecting between selected portions of the exhaust gas conduit upstream and downstream of a turbine (44) of the supercharger (42), and an exhaust bypass valve (50) disposed midway of the exhaust gas bypass passage (48) for controlling the quantity of engine exhaust gases. In the supercharger control system, an actuator (52) responsive to a digital control signal is employed for actuating the exhaust bypass valve (50). A microcomputer (100) calculates the opening of the exhaust bypass valve (50) so that the supercharged air pressure may not exceed the critical point giving rise to knocking, and such a digital control output signal is applied to energize the actuator (52) so that the supercharged air pressure can be controlled with highest efficiency over a wide operation range of the engine.

    Control system for exhaust gas-driven supercharger used in vehicle engine
    9.
    发明公开
    Control system for exhaust gas-driven supercharger used in vehicle engine 失效
    废气涡轮增压器用于车辆推进的控制系统。

    公开(公告)号：EP0040814A2

    公开(公告)日：1981-12-02

    申请号：EP81103887.6

    申请日：1981-05-20

    申请人： Hitachi, Ltd.

    发明人： Suzuki, Satoshi ,  Ando, Hiroyuki

    IPC分类号： F02B37/00 ,  F02D23/00

    CPC分类号： F02B37/186 ,  F02D35/027 ,  F02D41/0007 ,  F02D41/26 ,  Y02T10/144

    摘要： A system for controlling an exhaust gasdriven supercharger used in an internal combustion engine for an automotive vehicle includes an exhaust gas bypass passage (48) connecting between selected portions of the exhaust gas conduit upstream and downstream of a turbine (44) of the supercharger (42), and an exhaust bypass valve (50) disposed midway of the exhaust gas bypass passage (48) for controlling the quantity of engine exhaust gases. In the supercharger control system, an actuator (52) responsive to a digital control signal is employed for actuating the exhaust bypass valve (50). A microcomputer (100) calculates the opening of the exhaust bypass valve (50) so that the supercharged air pressure may not exceed the critical point giving rise to knocking, and such a digital control output signal is applied to energize the actuator (52) so that the supercharged air pressure can be controlled with highest efficiency over a wide operation range of the engine.