Medium Access Control (MAC) and Physical Layer (PHY) - CISE

4-June-07 P1901_PRO_016_r0
Table 58: Flag A0 and B0 Contents
The Burst Header, CCMP header and Interpacket Headers shall be transmitted unencrypted. In the calculation of
each MIC, the Burst Header plus the CCMP header and the Interpacket Header are more than 128 bits long.
Because of this fact, it is necessary, for the proper calculation of the first MIC, to add some padding at the end of
the Interpacket Header to get three 128-bit blocks. The padding bits shall not be transmitted. This padding is only
used for MIC calculation. Padding bits are not used for encryption. The procedure is shown in Figure 145.
Figure 145: Encryption and Integrity process for the first packet
In the case of the second and subsequent packets, the MIC calculation shall remain the same, but in the encryption,
the Burst Header and CCMP Header will not be included in the resulting Encrypted message. The padding bits shall
not be transmitted. This padding is only used for MIC calculation. Padding bits are not used for encryption. The
procedure is shown in Figure 146.
Submission page 285 UPA-OPERA