公开(公告)号：US20040093499A1

公开(公告)日：2004-05-13

申请号：US10659796

申请日：2003-09-11

Applicant: France Telecom

Inventor： David Arditi ,  Laurent Frisch ,  Dimitri Mouton

IPC: H04L009/00

CPC classification number: H04L9/3247 ,  H04L9/3263 ,  H04L9/3271 ,  H04L9/3297 ,  H04L2209/68 ,  H04L2209/80

Abstract: In order to apply an electronic signature from a client station having authentication resources at a server, the following steps are carried out: the client station is authenticated at the server, thus establishing an authenticated communication channel; a private key/public key pair is generated at the client station; a signature certificate request generated by means of at least the public key is transmitted from the client station to the server via the authenticated channel; a signature certificate obtained in response to the request is returned via the authenticated channel; this certificate is verified at the client station; an electronic signature is calculated at the client station by means of the private key, after which this private key is destroyed; and the calculated signature is formatted with the aid of the signature certificate received via the authenticated channel.

Abstract translation: 为了从具有服务器认证资源的客户站应用电子签名，执行以下步骤：在服务器处认证客户端站，从而建立认证通信信道; 在客户端生成私钥/公钥对; 至少通过公钥生成的签名证书请求经由认证信道从客户端发送到服务器; 通过认证通道返回响应请求而获得的签名证书; 该证书在客户站进行验证; 在客户端通过私钥计算电子签名，之后该私钥被销毁; 并借助于通过认证信道接收的签名证书格式化计算出的签名。

公开(公告)号：US20040260926A1

公开(公告)日：2004-12-23

申请号：US10848943

申请日：2004-05-19

Applicant: France Telecom

Inventor： David Arditti Modiano ,  Laurent Frisch ,  Dimitri Mouton

IPC: H04L009/00

CPC classification number: H04L9/3255 ,  H04L2209/42

Abstract: A ring-signature scheme is adapted so that at least one of the variability parameter values used is an identity trace of the anonymous signatory, determined as a function of anonymity withdrawal data stored and held secret by an anonymity withdrawal entity in connection with an identification of the anonymous signatory. This provides a subsequent controlled capacity of withdrawing the anonymity of the signatory, either by an authority, or by the signatory himself.

Abstract translation: 环形签名方案被改编成使得所使用的可变性参数值中的至少一个是匿名签名者的身份痕迹，该身份痕迹被确定为由匿名提款实体存储和保密的匿名提取数据的函数， 匿名签字人 这提供了随后由管理机构或签字人本人撤回签字人匿名的受控能力。

公开(公告)号：US20040243811A1

公开(公告)日：2004-12-02

申请号：US10828729

申请日：2004-04-21

Applicant: France Telecom

Inventor： Laurent Frisch ,  Dimitri Mouton

IPC: H04L009/00

CPC classification number: H04L9/3297 ,  H04L9/3213 ,  H04L9/3247

Abstract: A token of delegation from a first signatory to a second signatory is generated and the delegation token is associated with a document signed electronically by means of a cryptographic key of the second signatory. The delegation token contains delegation data signed electronically for the first signatory, in particular an identifier of the second signatory. It is generated by a server in response to a request relating to the signing of the document, sent by the second signatory.

Abstract translation: 生成从第一签署人到第二签署人的委托代表，代理令牌与通过第二签字人的加密密钥电子签名的文件相关联。 代理令牌包含以电子方式为第一签署人签署的委托数据，特别是第二签署人的标识符。 它由服务器响应于由第二签署人发送的与文档的签名有关的请求而产生。

公开(公告)号：US20040083359A1

公开(公告)日：2004-04-29

申请号：US10686740

申请日：2003-10-17

Applicant: FRANCE TELECOM

Inventor： Sylvie Camus ,  Laurent Frisch ,  Dimitri Mouton

IPC: H04L009/00

CPC classification number: H04L9/3263 ,  H04L9/3273

Abstract: To avoid recourse to a certification authority and to keep a trace of delegation to a delegate by a titleholder, a terminal of the titleholder draws up a second electronic certificate different from the normal certificate of the delegate. The second certificate includes at least a delegation attribute and a signature of the data in the second certificate by means of a private key of the titleholder. The titleholder behaves like a certification authority in respect of the second certificate, which is used for cryptographic actions by the delegate in the name of the titleholder.

Abstract translation: 为了避免向证书颁发机构提供诉求，并保留一个所有权人代表的代表权，所有权人的终端制定了与代表的正常证书不同的第二个电子证书。 所述第二证书至少包括授权属性和所述第二证书中的所述数据的签名，借助于所述标题持有者的私钥。 标题持有者的行为就像第二个证书的证书颁发机构一样，用于由代理人以标题持有人名义进行的加密操作。

公开(公告)号：US20040146162A1

公开(公告)日：2004-07-29

申请号：US10736752

申请日：2003-12-16

Applicant: France Telecom

Inventor： Henri Gilbert ,  Gilles MacArio-Rat ,  Dimitri Mouton

IPC: H04L009/00

CPC classification number: H04L9/0618

Abstract: A method of enciphering information constituted by a finite sequence nullS1,S2, . . . ,SNnull of N symbols (S1,S2, . . . ,SN) selected from an alphabet A. There are defined both a secret convention of p key symbols K1, . . . ,Kp selected form a second alphabet B, and a multivariate function M having mnull1 variables (m

Abstract translation: 一种编码由有限序列{S1，S2，...构成的信息的方法。 。 。 ，SN}从字母A中选择的N个符号（S1，S2，...，SN）。定义了p个密钥符号K1的秘密约定。 。 。 ，选择形式为第二字母B的Kp和具有m + 1个变量（m <= N）的多变量函数M：在A中操作A □B的M（Xi1，...，Xim，Y），{i1 ，。 。 。 在[1，N]的范围内，im}是m个不同的索引，并且函数M相对于A的m个变量的至少一个（Xi1）是双射的。对序列{S1，S2 ，。 。 。 ，SN}，使得其中{S1，S2，... 。 。 ，SN}是第j个置换之前的序列，第j次排列之后的序列是{S2，S3，...。 。 。 ，SN，Zj}，其中Zj等于M（Si1，...，Sim，Kj），编码信息由序列{S'1，S'2，...构成。 。 。 ，S'N}。