| 摘要 |
A method of cipher communication for management frame performed by station in wireless local area network system is provided. The method includes obtaining a first pseudonoise code sequence(PN) for a plaintext Medium Access Control(MAC) protocol data unit(MPDU), constructing an additional authentication data (AAD) by using fields in a header of the plaintext MPDU, constructing a Nonce value from the PN, an Address 2 and a Priority field in the header of the plaintext MPDU, generating a enrypted MPDU from the plaintext MPDU by using a temporal key, the AAD, and the Nonce value, and transmitting the enrypted MPDU to a peer station, wherein the plaintext MPDU is a management frame including a sequence number field, the sequence number field including access category field indicating category of data included in the plaintext MPDU, and the Nonce value includes a priority field matched with the access category field. |
