Hashing prefix-free values in a signature scheme

    公开(公告)号:US09698993B2

    公开(公告)日:2017-07-04

    申请号:US14477073

    申请日:2014-09-04

    Applicant: Certicom Corp.

    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.

    Generating Cryptographic Function Parameters Based on an Observed Astronomical Event
    82.
    发明申请
    Generating Cryptographic Function Parameters Based on an Observed Astronomical Event 审中-公开
    基于观测天文事件生成加密函数参数

    公开(公告)号:US20170063536A1

    公开(公告)日:2017-03-02

    申请号:US14691383

    申请日:2015-04-20

    Applicant: CERTICOM CORP.

    CPC classification number: H04L9/0662 G06F7/582 G09C5/00 H04L9/3006 H04L9/3066

    Abstract: Methods, systems, and computer programs for generating cryptographic function parameters are described. In some examples, astronomical data from an observed astronomical event is obtained. A pseudorandom generator is seeded based on the astronomical data. After seeding the pseudorandom generator, an output from the pseudorandom generator is obtained. A parameter for a cryptographic function is generated by operation of one or more data processors. The parameter is generated from the output from the pseudorandom generator.

    Abstract translation: 描述用于生成加密功能参数的方法,系统和计算机程序。 在一些实例中,获得了观测到的天文学事件的天文数据。 基于天文数据种植了伪随机发生器。 在伪随机发生器接种之后,获得来自伪随机发生器的输出。 通过一个或多个数据处理器的操作产生加密功能的参数。 该参数是从伪随机发生器的输出生成的。

    Methods and apparatus for use in transferring an assignment of a secure chip between subscription managers
    83.
    发明授权
    Methods and apparatus for use in transferring an assignment of a secure chip between subscription managers 有权
    用于在订阅管理器之间传输安全芯片的分配的方法和装置

    公开(公告)号:US09572016B2

    公开(公告)日:2017-02-14

    申请号:US14921299

    申请日:2015-10-23

    Abstract: Techniques for use in transferring an assignment of a secure chip of a wireless device from a current subscription manager (SM) of a current mobile network operator (MNO) to a new SM of a new MNO are described. In one illustrative example, the current SM receives a request for transferring the assignment and produces transfer permission data in response. The transfer permission data includes an identifier of the secure chip, an identifier of the current SM, and a digital signature of the current SM. The current SM then sends to the secure chip a transfer permission message which includes the transfer permission data. The transfer permission data indicates a permission for the secure chip to transfer the assignment from the current SM to the new SM. Additional techniques are performed by the secure chip, and the new SM, as described.

    Abstract translation: 描述了用于将无线设备的安全芯片的分配从当前移动网络运营商(MNO)的当前订阅管理器(SM)传送到新的MNO的新SM的技术。 在一个说明性示例中,当前SM接收到传送分配的请求,并作为响应产生传送许可数据。 传输许可数据包括安全芯片的标识符,当前SM的标识符和当前SM的数字签名。 当前的SM然后向安全芯片发送包括传输许可数据的传输许可消息。 传输许可数据指示安全芯片允许从当前SM传送分配到新的SM。 附加技术由安全芯片和新SM执行,如所述。

    METHOD AND APPARATUS FOR VERIFIABLE GENERATION OF PUBLIC KEYS
    86.
    发明申请
    METHOD AND APPARATUS FOR VERIFIABLE GENERATION OF PUBLIC KEYS 有权
    公共密钥可验证生成的方法和装置

    公开(公告)号:US20160248735A1

    公开(公告)日:2016-08-25

    申请号:US14992397

    申请日:2016-01-11

    Applicant: Certicom Corp.

    Abstract: The invention provides a method of verifiable generation of public keys. According to the method, a self-signed signature is first generated and then used as input to the generation of a pair of private and public keys. Verification of the signature proves that the keys are generated from a key generation process utilizing the signature. A certification authority can validate and verify a public key generated from a verifiable key generation process.

    Abstract translation: 本发明提供了可验证地生成公钥的方法。 根据该方法,首先生成自签名签名,然后将其用作生成一对私钥和公钥的输入。 签名的验证证明密钥是利用签名的密钥生成过程产生的。 认证机构可以验证和验证从可验证密钥生成过程产生的公钥。

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