Elliptic curve point octupling using single instruction multiple data processing
    41.
    发明授权
    Elliptic curve point octupling using single instruction multiple data processing 失效
    使用单指令多次数据处理的椭圆曲线点八倍

    公开(公告)号:US07680268B2

    公开(公告)日:2010-03-16

    申请号:US11080301

    申请日:2005-03-15

    IPC分类号: H04L9/00 H04L9/28 H04K1/00

    CPC分类号: G06F7/725

    摘要: Systems and methods for elliptic curve octupling using Single Instruction Multiple Data (SIMD) processing are described. In one aspect, a weighted projective point P on an elliptic curve, P having coordinates (x, y, z) is identified. Value 8P is computed from P with 12 sets of field multiplications using SIMD processing. Each set of field multiplications includes one to four respective field multiplications. Each set of field multiplications is performed in parallel according to an assigned time-step.

    摘要翻译: 描述了使用单指令多数据(SIMD)处理的椭圆曲线八倍频的系统和方法。 在一个方面,识别椭圆曲线上具有坐标(x,y,z)的P的加权投影点P。 使用SIMD处理,使用12组场乘法从P计算值8P。 每组场乘法包括一到四个相应的场乘法。 根据分配的时间步长并行地执行每组场乘法。

    Extended authenticated key exchange
    42.
    发明授权
    Extended authenticated key exchange 有权
    扩展认证密钥交换

    公开(公告)号:US07627760B2

    公开(公告)日:2009-12-01

    申请号:US11186251

    申请日:2005-07-21

    IPC分类号: H04L9/00 H04L9/32

    CPC分类号: H04L9/0847

    摘要: Extended authenticated key exchange is described. In one aspect, an identity (IDA) of an initiator and an identity (IDB) of a responder are determined. A first party (i.e., the initiator or the responder) computes a session key based at least on IDA and IDB. A second party (i.e., the initiator or the responder) that is not the first party, uses at least IDA and IDB to compute a corresponding session key. The initiator's session key and the responder's corresponding session key, if equal, provide for secure exchange of data between the initiator and the responder.

    摘要翻译: 描述了扩展的认证密钥交换。 一方面,确定响应者的发起者的身份(IDA)和身份(IDB)。 第一方(即,发起者或应答者)至少基于IDA和IDB来计算会话密钥。 不是第一方的第二方(即发起者或应答者)至少使用IDA和IDB来计算相应的会话密钥。 启动器的会话密钥和响应者的相应会话密钥(如果相等)提供了发起者和应答者之间的数据的安全交换。

    Security Against Corruption for Networked Storage
    43.
    发明申请
    Security Against Corruption for Networked Storage 审中-公开
    网络存储安全防范

    公开(公告)号:US20080301448A1

    公开(公告)日:2008-12-04

    申请号:US11757282

    申请日:2007-06-01

    IPC分类号: H04L9/00

    摘要: Systems and methods for security against corruption for networked storage are described. In one aspect, a destination device receives a linear combination of packets. The linear combination of packets represents digitally signed blocks of content and public information used to digitally sign segmented blocks of content. The destination device recombines the linear combination of packets to compute new valid signatures as linear combinations of received homomorphic digital signatures. The new valid signatures are for verifying by a requesting computing device recovering data associated with at least a subset of the linear combination of packets, integrity of the at least a subset. This provides the requesting node with security against corruption of data in networked storage.

    摘要翻译: 描述了用于联网存储的用于防止损坏的安全性的系统和方法。 在一个方面,目的地设备接收分组的线性组合。 分组的线性组合表示用于对分段内容块进行数字签名的数字签名的内容块和公共信息。 目的地设备将分组的线性组合重新组合以计算新的有效签名作为接收的同态数字签名的线性组合。 新的有效签名用于由请求的计算设备验证恢复与分组的线性组合的至少一个子集相关联的数据,至少一个子集的完整性。 这为请求节点提供了防止网络存储中的数据损坏的安全性。

    Digitally Certified Stationery
    44.
    发明申请
    Digitally Certified Stationery 有权
    数码认证文具

    公开(公告)号:US20080141330A1

    公开(公告)日:2008-06-12

    申请号:US11567707

    申请日:2006-12-06

    IPC分类号: G06F19/00 G06F21/00

    CPC分类号: G06F21/64 G06F21/6272

    摘要: Systems and methods for digitally certified stationery are described. In one aspect, a stationery granting authority (SGA) receives a request from a user to generate a document. If the user is authorized for the requested document, the SGA generates a certificate with credentialing information from data in the request. The SGA generates a first digital signature from some of the credentialing information. The SGA communicates the certificate to the user for editing and distribution as the document. A recipient of the document determines whether the document is “official” by contacting a specified service to provide certain information from the document. The verification service computes a second digital signature from the provided information for comparison to the first digital signature. If there is a match, the service notifies the recipient that the document is valid/official. Otherwise, the recipient is notified that the document is not valid.

    摘要翻译: 描述了数字认证的文具的系统和方法。 一方面,文具授予机构(SGA)从用户接收生成文档的请求。 如果用户被授权请求的文档,则SGA将从请求中的数据生成具有凭据信息的证书。 SGA从一些凭证信息生成第一个数字签名。 SGA将证书通信给用户进行编辑和分发作为文档。 文档的收件人通过联系指定的服务来确定文档是否“正式”,以从文档中提供某些信息。 验证服务根据提供的信息计算第二数字签名,以便与第一数字签名进行比较。 如果有匹配,则该服务通知收件人该文档是有效/正式的。 否则,通知收件人该文档无效。

    Computing Endomorphism Rings of Abelian Surfaces over Finite Fields
    45.
    发明申请
    Computing Endomorphism Rings of Abelian Surfaces over Finite Fields 失效
    计算有限域上的阿贝尔面的Endomorphism环

    公开(公告)号:US20080084997A1

    公开(公告)日:2008-04-10

    申请号:US11548016

    申请日:2006-10-10

    IPC分类号: H04L9/30

    CPC分类号: G06F7/724

    摘要: Computing endomorphism rings of Abelian surfaces over finite fields is described. In one aspect, an endomorphism ring of an Abelian surface over a finite field is probabilistically computed. A genus-two curve is generated based on the probabilistically determined endomorphism ring. The genus-2 curve is used for encryption and decryption operations and a cryptosystem.

    摘要翻译: 描述了在有限域上计算阿贝利面的同态环。 在一个方面,概率地计算有限域上的阿贝尔表面的同态环。 基于概率确定的同胚环产生属二曲线。 第2类曲线用于加密和解密操作以及密码系统。

    Device for point compression for Jacobians of hyperelliptic curves
    46.
    发明授权
    Device for point compression for Jacobians of hyperelliptic curves 有权
    Jacobian超椭圆曲线的点压缩装置

    公开(公告)号:US07236589B2

    公开(公告)日:2007-06-26

    申请号:US11278467

    申请日:2006-04-03

    IPC分类号: H04L9/28 H04L9/00 H04K1/00

    CPC分类号: G06F7/725

    摘要: A cryptosystem based on a Jacobian of a hyperelliptic curve is being used. Various methods and apparatus are provided for generating a compressed data format that identifies one or more points on the Jacobian of the hyperelliptic curve, and for subsequently decompressing the compressed format data.

    摘要翻译: 正在使用基于超椭圆​​曲线雅可比的密码系统。 提供了各种方法和装置,用于产生标识超椭圆曲线的雅可比的一个或多个点的压缩数据格式,并用于随后解压缩压缩格式数据。

    Methods for point compression for Jacobians of hyperelliptic curves
    47.
    发明授权
    Methods for point compression for Jacobians of hyperelliptic curves 失效
    Jacobian超椭圆曲线的点压缩方法

    公开(公告)号:US07043015B2

    公开(公告)日:2006-05-09

    申请号:US10285198

    申请日:2002-10-31

    IPC分类号: H04L9/28 H04L9/00 H04K1/00

    CPC分类号: G06F7/725

    摘要: A cryptosystem based on a Jacobian of a hyperelliptic curve is being used. Various methods and apparati are provided for generating a compressed data format that identifies one or more points—on the Jacobian of the hyperelliptic curve, and for subsequently decompressing the compressed format data.

    摘要翻译: 正在使用基于超椭圆​​曲线雅可比的密码系统。 提供了各种方法和装置,用于生成识别超椭圆曲线的雅可比的一个或多个点的压缩数据格式,并用于随后解压缩压缩格式数据。