首页
登录
从业资格
Digital certificate is an identity card
Digital certificate is an identity card
最全题库
2022-08-02
24
问题
Digital certificate is an identity card counterpart in the ( ) society. When a person wants to get a digital certificate, he generates his own key pair, gives the ( ) key as well as some proof of his identification to the Certificate Authority (CA). CA will check the person's identification to assure the identity of the applicant.If the applicant is really the one “who claims to be”, CA will issue a digital certificate, with the applicant's name, e-mail address and the applicant's public key, which is also signed digitally with the CA's ( 请作答此空) key. When A wants to send B a message, instead of getting B's public key, A now has to get B's digital certificate. A first checks the certificate authority's ( ) with the CA's public key to make sure it's a trustworthy certificate. Then A obtain B's public key from the certificate, and uses it to ( ) message and sends to B.A.symmetricB.privateC.publicD.shared
选项
答案
B
解析
数字证书相当于电脑世界的身份证。当一个人想获取数字证书时,他生成自己的一对密钥,把公钥和其他的鉴定证据送达证书授权机构CA,CA将核实这个人的证明,来确定申请人的身份。如果申请人确如自己所声称的,CA将授予带有申请人姓名、电子邮件地址和申请人公钥的数字证书,并且该证书由CA用其私有密钥做了数字签名。当A要给B发送消息时,A必须得到B的数字证书,而非B的公钥。A首先核实带有CA公钥的签名,以确定是否为可信赖的证书。然后,A从证书上获得B的公钥,并利用公钥将消息加密后发送给B。
转载请注明原文地址:https://tihaiku.com/congyezige/2414342.html
本试题收录于:
中级 信息安全工程师题库软件水平考试初中高级分类
中级 信息安全工程师
软件水平考试初中高级
相关试题推荐
Almostall( )havebuilt-indigitalcame
Certificatesare()documentsattestingt
Certificatesare()documentsattestingt
Certificatesare(请作答此空)documentsattesti
Almostall()havebuilt-indigitalcame
Almostall()havebuilt-indigitalcamer
Certificatesare()documentsattestingt
Digitalcertificateisanidentitycard
Digitalcertificateisanidentitycard
Digitalcertificateisanidentitycard
随机试题
Properarrangementofclassroomspaceisimportanttoencouraginginteractio
TheQuantifiedSelf-CountingEveryMomentTheideaofmeasur
预算定额是以特定范围的工程为对象编制的定额。这一特定范围的工程是指()。A.独
()是厂房的主要承重构件,承担着厂房上部的全部重量。A.柱 B.吊车梁
患者,男,45岁,右侧后牙咬合不适2个月求诊。自述3个月前牙髓治疗后行右侧后牙固
A.适用于严重的再生障碍性贫血、输大量库血或体外循环心脏手术后血小板锐减 B.
理气药不宜用于A.气阴不足 B.脾胃气滞 C.肺气气滞 D.肝气郁
根据《未成年人保护法》,下列关于未成年人合法权益保护的说法中,正确的是()。A:
社会主义的根本任务是( )。A.解放和发展生产力 B.消灭剥削,消除两极分化
根据安全预评价程序的要求,在履行危险,有害因素辨识与分析前,需要做安全预评价的前
最新回复
(
0
)