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    A message deciphering method
    1.
    发明公开
    A message deciphering method 有权
    恩法赫恩·恩施恩苏伦

    公开(公告)号：EP1548976A1

    公开(公告)日：2005-06-29

    申请号：EP03425824.4

    申请日：2003-12-24

    Applicant: STMicroelectronics S.r.l.

    Inventor： Sannino, Roberto Valerio ,  Sozzani, Fabio ,  Bertoni, Guido Marco ,  Pelosi, Gerardo ,  Fragneto, Pasqualina

    IPC: H04L9/30

    CPC classification number: H04L9/083 ,  H04L9/3073 ,  H04L9/3213

    Abstract: A method for decrypting the encrypted messages sent by a transmission device to a first electronic device (SIM) associated with a first trusted authority (TA-SIM) and to a second electronic device (ME). The method comprises the steps of:

    a) associating a single joint identity with the first (SIM) and the second (ME) devices which is identificative of a common entity comprising the first (SIM) and the second (ME) devices;
    b) carrying out a single encryption operation of a message by the transmission device, by using the joint identity and transmitting the encrypted message to both devices;
    c) generating first (W SIM ) and second (W ME ) decryption tokens by the first (SIM) and the second (ME) devices, respectively;
    d) providing said first token to the second device and said second token to the first device;
    e) generating, by starting from said tokens, by the first and second devices, of a joint decryption key (W) in order to decrypt the encrypted message.

    Abstract translation: 一种用于将由传输设备发送的加密消息解密到与第一可信管理机构（TA-SIM）和第二电子设备（ME））相关联的第一电子设备（SIM）的方法。 该方法包括以下步骤：a）将单个联合身份与第一（SIM）和第二（ME）设备相关联，其与包括第一（SIM）和第二（ME）设备的公共实体相同） b）通过使用联合身份并将加密的消息发送到两个设备，由传输设备执行消息的单一加密操作; c）分别由第一（SIM）和第二（ME）设备产生第一（WSIM）和第二（WME）解密令牌） d）向所述第一设备提供所述第一令牌给所述第二设备和所述第二令牌; e）通过第一和第二设备从所述令牌开始，通过联合解密密钥（W）生成以解密加密的消息。

    Method and system for establishing secure communication
    3.
    发明公开
    Method and system for establishing secure communication 审中-公开
    Vorrichtung und Verfahren zum Aufbau einer sicheren Kommunikation

    公开(公告)号：EP1533971A1

    公开(公告)日：2005-05-25

    申请号：EP03425738.6

    申请日：2003-11-18

    Applicant: STMicroelectronics S.r.l.

    Inventor： Sozzani, Fabio ,  Sannino, Roberto Valerio ,  Bertoni, Guido Marco ,  Pelosi, Gerardo ,  Fragneto, Pasqualina

    IPC: H04L29/06 ,  H04L9/08

    CPC classification number: H04L63/0442 ,  H04L9/0822 ,  H04L9/083 ,  H04L9/3073 ,  H04L63/062 ,  H04L63/0853 ,  H04L2209/80

    Abstract: A method for establishing a communication between a first electronic device (SIM) associated with a first Trusted Authority (TA-SIM) and a second electronic device (ME).
    The method comprises the steps of:

    making a first key (Ksyk SIM ) available to the first device for the communication between the first Authority and the first device;
    providing a second Trusted Authority (TA-ME), associated with the second device and distinct and autonomous with respect to said first Authority; such second Authority may generate a second key (Ksyk ME ) in order to communicate with the second device.

    Furthermore, the method comprises the steps of:

    making the second key available to the second device;
    providing the first and second device with a communication key (Ks) to be used in said communication, through at least one of said first and second Authorities.

    Abstract translation: 一种用于建立与第一信任授权（TA-SIM）和第二电子设备（ME）相关联的第一电子设备（SIM）之间的通信的方法。 该方法包括以下步骤：使第一密钥（KsykSIM）可用于第一设备用于第一权限和第一设备之间的通信; 提供与所述第二设备相关联的第二可信管理机构（TA-ME），并且针对所述第一机构具有不同且自主的; 这样的第二权限可以生成第二密钥（KsykME）以便与第二设备进行通信。 此外，该方法包括以下步骤：使第二密钥可用于第二设备; 通过所述第一和第二权限中的至少一个向所述第一和第二设备提供要在所述通信中使用的通信密钥（Ks）。

    Method for establishing an encrypted communication by means of keys
    4.
    发明公开
    Method for establishing an encrypted communication by means of keys 审中-公开
    Verfahren zum Erzeugen einerverschlüsseltenKommunikation mittelsSchlüssel

    公开(公告)号：EP1519530A1

    公开(公告)日：2005-03-30

    申请号：EP03425626.3

    申请日：2003-09-29

    Applicant: STMicroelectronics S.r.l.

    Inventor： Sozzani, Fabio ,  Sannino, Roberto Valerio ,  Bertoni, Guido Marco ,  Pelosi, Gerardo ,  Fragneto, Pasqualina

    IPC: H04L29/06

    CPC classification number: H04L63/0428 ,  H04L9/083 ,  H04L9/0847 ,  H04L63/0853 ,  H04L63/0869 ,  H04L2209/76 ,  H04L2209/80

    Abstract: Method of establishing an encrypted communication by means of keys between a first electronic device (SIM) associated to a first trusted authority (TA-SIM) and a second electronic device (ME).
    The method comprises the steps of:

    generating a first secret key (Ks) associated to the first device for the management of said communication;
    generating, at least in part by means of said first authority, a second secret key (Ks) associated to the second device for the management of said communication.

    The method is characterised in that the step of generation of the first key is performed at least in part by means of a second trusted authority (TA-ME) associated to the second device that is distinct and autonomous from said first authority. Or, the generation of the first key is performed, at least in part, by the second device passing through the second trusted authority.

    Abstract translation: 通过与第一信任机构（TA-SIM）和第二电子设备（ME）相关联的第一电子设备（SIM）之间的密钥建立加密通信的方法。 该方法包括以下步骤：产生与第一设备相关联的用于管理所述通信的第一密钥（Ks）; 至少部分地通过所述第一权限产生与所述第二设备相关联的用于管理所述通信的第二秘密密钥（Ks）。 该方法的特征在于，生成第一密钥的步骤至少部分地通过与第二设备相关联的第二可信管理机构（TA-ME）执行，所述第二可信管理机构（TA-ME）与所述第一授权机构是不同的和自主的 。 或者，至少部分地由第二设备通过第二可信管理机构来执行第一密钥的生成。

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