公开(公告)号：US07571324B2

公开(公告)日：2009-08-04

申请号：US10500792

申请日：2002-12-13

Applicant: Sèbastien Canard ,  Marc Girault ,  Jacques Traore

Inventor： Sèbastien Canard ,  Marc Girault ,  Jacques Traore

IPC: H04K1/00 ,  H04L9/00 ,  H04L9/28 ,  G06F7/04 ,  G06K9/00

CPC classification number: H04L9/3255

Abstract: A cryptographic method and apparatus for anonymously signing a message. Added to the anonymous signature is another signature which is calculated (operation 13) using a private key common to all the members of a group authorized to sign and unknown to all revoked members. The private key is updated (operations 8, 11) at group level on each revocation within the group and at member level only on anonymous signing of a message by the member.

Abstract translation: 用于匿名签名消息的密码方法和装置。 添加到匿名签名是另一个计算的签名（操作13），使用对所有被撤销的成员授权签名和未知的组的所有成员共同的私钥。 在组内每个撤销的组级别和成员级别的私有密钥被更新（操作8,11），只有成员匿名签名消息。