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    Authenticated encryption method using working blocks
    13.
    发明授权
    Authenticated encryption method using working blocks 有权

    公开(公告)号：US09917695B2

    公开(公告)日：2018-03-13

    申请号：US13793810

    申请日：2013-03-11

    Applicant: BlackBerry Limited ,  Certicom Corp.

    Inventor： Atsushi Yamada ,  Gregory Marc Zaverucha

    IPC: H04K1/00 ,  H04L9/28 ,  H04L9/06

    CPC classification number: H04L9/30 ,  H04L9/0637 ,  H04L9/0643 ,  H04L2209/125

    Abstract: A computer-implemented authenticated encryption method for converting a plaintext message into a ciphertext message. The method includes dividing the plaintext message into at least two working blocks, each working block having a mathematical relationship to the plaintext message. For each working block, a working block ciphertext is computed as a function of such working block, a deterministic working block initialization vector, and a deterministic working block encryption key. For each working block, a message authentication tag is computed as a function of a deterministic working block message authentication key and at least one of (a) the working block ciphertext computed for such working block and an indication corresponding to the mathematical relationship of such working block to the plaintext message and (b) such working block. The method further includes computing a global message authentication tag as a function of the message authentication tag computed for each working block and a global message authentication key. The ciphertext message comprises the working block ciphertext computed for each working block and the global message authentication tag.

    SYSTEM AND METHOD OF LAWFUL ACCESS TO SECURE COMMUNICATIONS
    14.
    发明申请
    SYSTEM AND METHOD OF LAWFUL ACCESS TO SECURE COMMUNICATIONS 有权
    系统和方法进行安全通信

    公开(公告)号：US20160344775A1

    公开(公告)日：2016-11-24

    申请号：US15225543

    申请日：2016-08-01

    Applicant: BlackBerry Limited ,  Certicom Corp.

    Inventor： Matthew John Campagna ,  Gregory Marc Zaverucha ,  Michael Eoin Buckley

    IPC: H04L29/06 ,  H04L9/08

    CPC classification number: H04L63/306 ,  H04L9/0861 ,  H04L2209/80

    Abstract: The present disclosure relates to systems and methods for secure communications. In some aspects, a method of signalling an interception time period is described. At least one keying information used by a KMF to regenerate a key is stored. A start_interception message is signaled from an ADMF to a CSCF. A halt_message is signaled from the ADMF to the CSCF.

    Abstract translation: 本公开涉及用于安全通信的系统和方法。 在一些方面，描述了用于发信号通知截取时间段的方法。 存储KMF用于重新生成密钥的至少一个密钥信息。 从ADMF向CSCF发送start_interception消息。 从ADMF向CSCF发出halt_message信号。

    System and method of lawful access to secure communications
    15.
    发明授权
    System and method of lawful access to secure communications 有权
    合法访问安全通信的系统和方法

    公开(公告)号：US09413530B2

    公开(公告)日：2016-08-09

    申请号：US13739620

    申请日：2013-01-11

    Applicant: Research In Motion Limited ,  Certicom Corp.

    Inventor： Michael Eoin Buckley ,  Gregory Marc Zaverucha ,  Matthew John Campagna

    IPC: H04L9/00 ,  H04L9/08 ,  H04L29/06

    CPC classification number: H04L63/306 ,  H04L9/0861 ,  H04L2209/80

    Abstract: Systems and methods for secure communications are provided. In some aspects, a method of signalling an interception time period is described. At least one keying information used by a key management service (KMS) to regenerate a key is stored. A start_interception message is signaled from an administration function (ADMF) to a call session control function (CSCF). A halt_message is signaled from the ADMF to the CSCF.

    Abstract translation: 提供了用于安全通信的系统和方法。 在一些方面，描述了用于发信号通知截取时间段的方法。 存储密钥管理服务（KMS）用于重新生成密钥的至少一个密钥信息。 start_interception消息从管理功能（ADMF）发送到呼叫会话控制功能（CSCF）。 从ADMF向CSCF发出halt_message信号。

    System and method of lawful access to secure communications
    16.
    发明授权
    System and method of lawful access to secure communications 有权
    合法访问安全通信的系统和方法

    公开(公告)号：US09264227B2

    公开(公告)日：2016-02-16

    申请号：US13739671

    申请日：2013-01-11

    Applicant: Research In Motion Limited ,  Certicom Corp.

    Inventor： Michael Eoin Buckley ,  Gregory Marc Zaverucha ,  Matthew John Campagna

    IPC: H04L9/08 ,  H04L29/06

    CPC classification number: H04L9/0861 ,  H04L9/083 ,  H04L9/0869 ,  H04L63/061 ,  H04L63/306 ,  H04L2209/80

    Abstract: The present disclosure relates to systems and methods for secure communications. In some aspects, an initiator KMS receives, from an initiator UE, one or more values used in generation of an encryption key, which includes obtaining at least one value associated with a RANDRi. The initiator KMS sends the at least one value associated with the RANDRi to a responder KMS. The responder KMS generates the encryption key using the one or more values.

    Abstract translation: 本公开涉及用于安全通信的系统和方法。 在一些方面，发起方KMS从发起方UE接收用于生成加密密钥的一个或多个值，其包括获得与RANDRi相关联的至少一个值。 启动器KMS将与RANDRi相关联的至少一个值发送到响应者KMS。 响应者KMS使用一个或多个值生成加密密钥。

    Hashing Prefix-Free Values in a Signature Scheme
    18.
    发明申请
    Hashing Prefix-Free Values in a Signature Scheme 有权
    签名方案中的哈希前缀免费值

    公开(公告)号：US20140372765A1

    公开(公告)日：2014-12-18

    申请号：US14477073

    申请日：2014-09-04

    Applicant: Certicom Corp.

    Inventor： Gregory Marc Zaverucha ,  David William Kravitz

    IPC: H04L9/32

    CPC classification number: H04L9/3252 ,  H04L9/3242 ,  H04L9/3268

    Abstract: Methods, systems, and computer programs for producing hash values are disclosed. A prefix-free value is obtained based on input data. The prefix-free value can be based on an implicit certificate, a message to be signed, a message to be verified, or other suitable information. A hash value is obtained by applying a hash function to the prefix-free value. The hash value is used in a cryptographic scheme. In some instances, a public key or a private key is generated based on the hash value. In some instances, a digital signature is generated based on the hash value, or a digital signature is verified based on the hash value, as appropriate.

    Abstract translation: 公开了用于产生散列值的方法，系统和计算机程序。 基于输入数据获得无前缀值。 无前缀的值可以基于隐式证书，要签名的消息，要验证的消息或其他合适的信息。 通过将哈希函数应用于无前缀的值来获得哈希值。 哈希值用于加密方案。 在某些情况下，基于哈希值生成公钥或私钥。 在某些情况下，根据哈希值生成数字签名，或者根据哈希值，适当地验证数字签名。

    System and Method of Lawful Access to Secure Communications
    20.
    发明申请
    System and Method of Lawful Access to Secure Communications 有权
    合法访问安全通信的系统和方法

    公开(公告)号：US20130182841A1

    公开(公告)日：2013-07-18

    申请号：US13739671

    申请日：2013-01-11

    Applicant: Research In Motion Limited ,  Certicom Corp.

    Inventor： Michael Eoin Buckley ,  Gregory Marc Zaverucha ,  Matthew John Campagna

    IPC: H04L9/08

    CPC classification number: H04L9/0861 ,  H04L9/083 ,  H04L9/0869 ,  H04L63/061 ,  H04L63/306 ,  H04L2209/80

    Abstract: The present disclosure relates to systems and methods for secure communications. In some aspects, an initiator KMS receives, from an initiator UE, one or more values used in generation of an encryption key, which includes obtaining at least one value associated with a RANDRi. The initiator KMS sends the at least one value associated with the RANDRi to a responder KMS. The responder KMS generates the encryption key using the one or more values.

    Abstract translation: 本公开涉及用于安全通信的系统和方法。 在一些方面，发起方KMS从发起方UE接收用于生成加密密钥的一个或多个值，其包括获得与RANDRi相关联的至少一个值。 启动器KMS将与RANDRi相关联的至少一个值发送到响应者KMS。 响应者KMS使用一个或多个值生成加密密钥。

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