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    Public key encryption with digital signature scheme
    21.
    发明授权
    Public key encryption with digital signature scheme 有权

    公开(公告)号：US09503261B2

    公开(公告)日：2016-11-22

    申请号：US13934178

    申请日：2013-07-02

    Applicant: BlackBerry Limited

    Inventor： Herbert Anthony Little

    IPC: H04L9/30 ,  H04L9/32

    CPC classification number: H04L9/30 ,  H04L9/3247 ,  H04L2209/80

    Abstract: An improved encryption and digital signature system and method in accordance with the invention reuses an encryption ephemeral key pair from an encryption process in a digital signature process. The reuse of the encryption ephemeral key pair in the digital signature process advantageously results in reduced byte size of the digital signature and reduction of costly computation overhead. In a preferred embodiment, the invention is based on the El Gamal encryption scheme and the Nyberg-Rueppel signature scheme. The present invention is particularly useful for operation in conjunction with small communication devices having limited processing and storage, wherein such devices may communicate via bandwidth sensitive RF links.

    System and method for privilege management and revocation
    23.
    发明授权
    System and method for privilege management and revocation 有权
    特权管理和撤销的系统和方法

    公开(公告)号：US09282099B2

    公开(公告)日：2016-03-08

    申请号：US13960214

    申请日：2013-08-06

    Applicant: BlackBerry Limited

    Inventor： Neil Patrick Adams ,  Herbert Anthony Little

    IPC: G06F21/51 ,  H04L29/06 ,  G06F12/14

    CPC classification number: G06F21/121 ,  G06F21/6218 ,  H04L63/10 ,  H04L63/105 ,  H04L63/1408 ,  H04L63/20

    Abstract: The present disclosure relates generally to the management of privileges associated with certain applications that are accessible by users of electronic equipment, such as, for example, networked computers, mobile wireless communications devices, and the like. In a broad aspect, a method for managing privileges associated with applications comprises: monitoring a plurality of electronic devices within a system; detecting a change in privileges associated with one or more applications resident on the plurality of electronic devices, wherein one or more privileges that are to be revoked are identified; and in response to a detection of the change in privileges, revoking the one or more privileges, such that each of the one or more applications resident on the plurality of electronic devices no longer has access to the one or more privileges.

    Abstract translation: 本公开一般涉及与电子设备的用户可访问的某些应用相关联的特权的管理，诸如联网计算机，移动无线通信设备等。 在广泛的方面，用于管理与应用相关联的权限的方法包括：监视系统内的多个电子设备; 检测与驻留在所述多个电子设备上的一个或多个应用相关联的特权的改变，其中识别要被撤销的一个或多个特权; 并且响应于特权变化的检测，撤销所述一个或多个特权，使得驻留在所述多个电子设备上的所述一个或多个应用程序中的每一个不再具有对所述一个或多个特权的访问。

    Systems, devices, and methods for securely transmitting a security parameter to a computing device
    26.
    发明授权
    Systems, devices, and methods for securely transmitting a security parameter to a computing device 有权
    用于将安全参数安全地传送到计算设备的系统，设备和方法

    公开(公告)号：US09049006B2

    公开(公告)日：2015-06-02

    申请号：US13888591

    申请日：2013-05-07

    Applicant: BlackBerry Limited

    Inventor： Michael Stephen Brown ,  Herbert Anthony Little

    IPC: H04L9/32 ,  H04L9/08 ,  H04L29/06

    CPC classification number: H04L9/08 ,  H04L9/0844 ,  H04L9/3226 ,  H04L63/061 ,  H04L63/18 ,  H04L63/20 ,  H04L2209/80

    Abstract: Embodiments of the systems, devices, and methods described herein generally facilitate the secure transmittal of security parameters. In accordance with at least one embodiment, a representation of first data comprising a password is generated at the first computing device as an audio signal. The audio signal is transmitted from the first computing device to the second computing device. The password is determined from the audio signal at the second computing device. A key exchange is performed between the first computing device and the second computing device wherein a key is derived at each of the first and second computing devices. In at least one embodiment, one or more security parameters (e.g. one or more public keys) are exchanged between the first and second computing devices, and techniques for securing the exchange of security parameters or authenticating exchanged security parameters are generally disclosed herein.

    Abstract translation: 本文描述的系统，设备和方法的实施例通常有助于安全传输安全参数。 根据至少一个实施例，在第一计算设备处生成包括密码的第一数据的表示作为音频信号。 音频信号从第一计算设备发送到第二计算设备。 从第二计算设备的音频信号确定密码。 在第一计算设备和第二计算设备之间执行密钥交换，其中在第一和第二计算设备的每一个处导出密钥。 在至少一个实施例中，在第一和第二计算设备之间交换一个或多个安全参数（例如一个或多个公共密钥），并且本文公开了用于确保安全参数交换或认证交换的安全参数的技术。

    Incorporating data into an ECDSA signature component
    27.
    发明授权
    Incorporating data into an ECDSA signature component 有权
    将数据合并到ECDSA签名组件中

    公开(公告)号：US08972738B2

    公开(公告)日：2015-03-03

    申请号：US14218513

    申请日：2014-03-18

    Applicant: Certicom Corp. ,  Blackberry Limited

    Inventor： Herbert Anthony Little ,  Scott Alexander Vanstone ,  Daniel Richard L. Brown ,  Matthew John Campagna

    IPC: H04L9/32 ,  H04L9/30

    CPC classification number: H04L9/3066 ,  H04L9/3252 ,  H04L2209/38 ,  H04L2209/80

    Abstract: During generation of a signature on a message to create a signed message, a signer determines one of the signature components such that particular information can be extracted from the signature component. The particular information may be related to one or more of the signer and the message to be signed. After receiving a signed message purported to be signed by the signer, a verifier can extract the particular information from the signature component.

    Abstract translation: 在生成消息的签名以产生签名消息时，签名者确定签名组件中的一个，从而可以从签名组件提取特定信息。 特定信息可以与签名者和要签名的消息中的一个或多个有关。 在收到签名者签名的签名信息后，验证者可以从签名组件中提取特定信息。

    SYSTEM AND METHOD FOR REMOTE RESET OF PASSWORD AND ENCRYPTION KEY
    28.
    发明申请
    SYSTEM AND METHOD FOR REMOTE RESET OF PASSWORD AND ENCRYPTION KEY 有权
    远程复位密码和加密密钥的系统和方法

    公开(公告)号：US20150016612A1

    公开(公告)日：2015-01-15

    申请号：US14444377

    申请日：2014-07-28

    Applicant: BlackBerry Limited

    Inventor： Michael Kenneth Brown ,  Michael Stephen Brown ,  Herbert Anthony Little

    IPC: H04L9/08 ,  H04L9/14

    CPC classification number: H04L9/0822 ,  H04L9/0891 ,  H04L9/14 ,  H04L63/00 ,  H04L2209/24 ,  H04L2209/60

    Abstract: Data is secured on a device in communication with a remote location using a password and content protection key. The device stores data encrypted using a content protection key, which itself may be stored in encrypted form using the password and a key encryption key. The remote location receives a public key from the device. The remote location uses the public key and a stored private key to generate a further public key. The further public key is sent to the device. The device uses the further public key to generate a key encryption key, which is then used to decrypt the encrypted content protection key. A new content encryption key may then be created.

    Abstract translation: 使用密码和内容保护密钥将数据保护在与远程位置通信的设备上。 设备存储使用内容保护密钥加密的数据，该内容保护密钥本身可以使用密码和密钥加密密钥以加密形式存储。 远程位置从设备接收公钥。 远程位置使用公钥和存储的私钥来生成另外的公钥。 进一步的公钥被发送到设备。 该设备使用另外的公钥来生成密钥加密密钥，然后将其用于解密加密的内容保护密钥。 然后可以创建新的内容加密密钥。

    INCORPORATING DATA INTO AN ECDSA SIGNATURE COMPONENT
    30.
    发明申请
    INCORPORATING DATA INTO AN ECDSA SIGNATURE COMPONENT 有权
    将数据合并到ECDSA签名组件中

    公开(公告)号：US20140201535A1

    公开(公告)日：2014-07-17

    申请号：US14218513

    申请日：2014-03-18

    Applicant: BLACKBERRY LIMITED ,  CERTICOM CORP.

    Inventor： Herbert Anthony Little ,  Scott Alexander Vanstone ,  Daniel Richard L. Brown ,  Matthew John Campagna

    IPC: H04L9/30 ,  H04L9/32

    CPC classification number: H04L9/3066 ,  H04L9/3252 ,  H04L2209/38 ,  H04L2209/80

    Abstract: During generation of a signature on a message to create a signed message, a signer determines one of the signature components such that particular information can be extracted from the signature component. The particular information may be related to one or more of the signer and the message to be signed. After receiving a signed message purported to be signed by the signer, a verifier can extract the particular information from the signature component.

    Abstract translation: 在生成消息的签名以产生签名消息时，签名者确定签名组件中的一个，从而可以从签名组件提取特定信息。 特定信息可以与签名者和要签名的消息中的一个或多个有关。 在收到签名者签名的签名信息后，验证者可以从签名组件中提取特定信息。

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