首页>
外国专利>
ANONYMOUS CREDENTIAL SYSTEM, USER DEVICE, VERIFICATION DEVICE, ANONYMOUS CREDENTIAL METHOD, AND ANONYMOUS CREDENTIAL PROGRAM
ANONYMOUS CREDENTIAL SYSTEM, USER DEVICE, VERIFICATION DEVICE, ANONYMOUS CREDENTIAL METHOD, AND ANONYMOUS CREDENTIAL PROGRAM
展开▼
机译:匿名凭证系统,用户设备,验证设备,匿名凭证方法和匿名凭证程序
展开▼
页面导航
摘要
著录项
相似文献
摘要
A signature unit, in which a user device generates/transmits digital signature data to an authentication device, includes: a first function, which receives as input a plurality of subsets in which a plurality of characteristics of the users are classified; a second function, which generates a first encrypted text acquired by encrypting a user device public key with an identification device public key; a third function, which generates a second encrypted text, acquired by encrypting characteristic values belonging to a specific subset among the subsets with a characteristic value disclosure device public key; and a fourth function, which employs portions of a group public key and a member certificate to generates a signature of knowledge that denotes that data, of multiplication of a portion of the user device public key and all of the numerical values of a characteristic value certificate corresponding to each of the characteristics, satisfies the specific conditions.
展开▼