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The following description of asymmetric encryption algorithms, which item is wrong?

Compared with symmetric encryption algorithms, the security factor is higher.
Encryption is faster than symmetric encryption algorithms.
Public keys are generally disclosed to users.
Asymmetric encryption algorithms are a pair of keys, divided into public and private keys.

Answer(s): B

The following description of the construction of a digital certificate, which item is wrong

The name of the device that issued the certificate can be different from the subject name in the issuer certificate.
The structure of the certificate follows the specification of the X.509 v3 version.
The simplest certificate consists of a public key, a name, and a digital signature from a certificate authority.
The issuer signs the certificate information with the private key.

Answer(s): A

The following description of digital certificates, which one is wrong

The simplest certificate consists of a public key, a name, and a digital signature from a certificate authority.
Digital certificates contain the owner's public key and related identity information.
In general, the key of a digital certificate has an expiration date.
Digital certificates do not solve the problem of digital signature technology where the public key cannot be determined to be the designated owner.

Answer(s): D