Section: 9.9.3.28 Short MAC
Content: The purpose of the Short MAC information element is to protect the integrity of a SERVICE REQUEST message. The integrity protection shall include octet 1 and 2 of the SERVICE REQUEST message. For the used algorithm and other input parameters to the algorithm see clause 9.5. Only the 2 least significant octets of the resulting message authentication code are included in the information element. The Short MAC information element is coded as shown in figure 9.9.3.28.1 and table 9.9.3.28.1. The Short MAC is a type 3 information element with a length of 3 octets. Figure 9.9.3.28.1: Short MAC information element Table 9.9.3.28.1: Short MAC information element