公开(公告)号：US09990796B2

公开(公告)日：2018-06-05

申请号：US14629395

申请日：2015-02-23

Applicant: Certicom Corp.

Inventor： Scott A. Vanstone

IPC: G06F21/33 ,  G07F7/10 ,  G06Q20/34 ,  G06Q20/36 ,  G06Q20/38 ,  G06Q20/40 ,  H04L9/30 ,  H04L9/32

CPC classification number: G07F7/1008 ,  G06Q20/341 ,  G06Q20/3674 ,  G06Q20/3825 ,  G06Q20/401 ,  G06Q20/40975 ,  G06Q2220/00 ,  G07F7/1016 ,  H04L9/3066 ,  H04L9/3249 ,  H04L9/3252 ,  H04L2209/56

Abstract: A method of verifying a pair of correspondents in electronic transaction, the correspondents each including first and second signature schemes and wherein the first signature scheme is computationally more difficult in signing than verifying and the second signature scheme is computationally more difficult in verifying than signing. The method comprises the step of the first correspondent signing information according to the first signature scheme and transmitting the first signature to the second correspondent, the second correspondent verifying the first signature received from the first correspondent, wherein the verification is performed according to the first signature scheme. The second correspondent then signs information according to the second signature scheme and transmits the second signature to the first correspondent, the first correspondent verifies the second signature received from the second correspondent, wherein the verification is performed according to the second signature algorithm; the transaction is rejected if either verification fails. The method thereby allows one of the correspondents to participate with relatively little computing power while maintaining security of the transaction.

公开(公告)号：US20140229730A1

公开(公告)日：2014-08-14

申请号：US14257781

申请日：2014-04-21

Applicant: Certicom Corp.

Inventor： Minghua Qu ,  Scott A. Vanstone

IPC: H04L9/32

CPC classification number: H04L9/3263 ,  H04L9/0844 ,  H04L9/3247

Abstract: A method of generating a public key in a secure digital communication system, having at least one trusted entity CA and subscriber entities A. For each entity A, the trusted entity selects a unique identity distinguishing the entity A. The trusted entity then generates a public key reconstruction public data of the entity A by mathematically combining public values obtained from respective private values of the trusted entity and the entity A. The unique identity and public key reconstruction public data of the entity A serve as A's implicit certificate. The trusted entity combines the implicit certificate information with a mathematical function to derive an entity information ƒ and generates a value kA by binding with ƒ with private values of the trusted entity. The trusted entity transmits the value kA to the entity to permit A to generate a private key from kA, A's private value and A's implicit certificate. The entity A's public key information may be reconstructed from public information, and A's implicit certificate.

Abstract translation: 一种在安全数字通信系统中生成公共密钥的方法，其具有至少一个可信实体CA和订户实体A.对于每个实体A，可信实体选择区分实体A的唯一标识。然后，可信实体生成公共 通过数字地组合从可信实体和实体A的各私有值获得的公共值，实体A的关键重建公共数据。实体A的唯一身份和公钥重建公共数据作为A的隐式证书。 可信实体将隐式证书信息与数学函数组合以导出实体信息ƒ并通过与ƒ与可信实体的私有值绑定来生成值kA。 可信实体将值kA发送给实体，以允许A从kA，A的私有值和A的隐式证书生成私钥。 实体A的公钥信息可以从公共信息和A的隐式证书重建。

公开(公告)号：US09071445B2

公开(公告)日：2015-06-30

申请号：US13887120

申请日：2013-05-03

Applicant: Certicom Corp.

Inventor： Scott A. Vanstone

IPC: H04L29/06 ,  H04L9/32 ,  H04L9/30

CPC classification number: H04L9/3263 ,  H04L9/3073

Abstract: The invention relates to a method of generating an implicit certificate and a method of generating a private key from a public key. The method involves a method generating an implicit certificate in three phases. The public key may be an entity's identity or derived from an entity's identify. Only the owner of the public key possesses complete information to generate the corresponding private key. No authority is required to nor able to generate an entity's private key.

Abstract translation: 本发明涉及一种生成隐式证书的方法和一种从公开密钥生成私钥的方法。 该方法涉及三个阶段生成隐式证书的方法。 公钥可以是实体的身份，也可以来自实体的身份。 只有公钥的所有者拥有完整的信息才能生成相应的私钥。 不需要权限，也不能生成实体的私钥。