The structure of a digital certificate does not include：
A. Version Number
B. Serial Number
C. Signature algorithm identifier
D. Private key of the certificate owner
查看答案
A digital certificate contains all of the following except the:
A. subject's private key.
B. subject's public key.
C. digital signature of the certification authority.
D. digital certificate serial number.
All of the following statements about PKI are true except:
A. the term PKI refers to the certification authorities and digital certificate procedures that are accepted by all parties.
B. PKI is not effective against insiders who have a legitimate access to corporate systems including customer information.
C. PKI guarantees that the verifying computer of the merchant is secure.
D. the acronym PKI stands for public key infrastructure.
Which of the following dimensions of e-commerce security is not provided for by encryption?
A. confidentiality
B. availability
C. message integrity
D. nonrepudiation
All the following statements about symmetric key encryption are true except:
A. in symmetric key encryption, both the sender and the receiver use the same key to encrypt and decrypt a message.
B. the Data Encryption Standard is a symmetric key encryption system.
C. symmetric key encryption is computationally slower.
D. symmetric key encryption is a key element in digital envelopes.
微信支付 
支付宝支付