Regarding CAPWAP encryption, which of the following statements is wrong?

CAPWAP The data tunnel can be used DTLS Encrypted.

DTLS Support two authentication methods:Certificate authentication(out AC,AP Already brought)with PSK Password authentication.

DTLS Encryption can guarantee AC The issued control messages will not be eavesdropped on.

Use the certificate method to carry out DTLS Negotiation, the certificate is only used to generate the key, not right AP Perform authentication.