
970
SAM4CP [DATASHEET]
43051E–ATPL–08/14
41.5.14 AES GCM Authentication Tag Word Register x
Name:
AES_TAGRx [x=0..3]
Address:
0x40000088
Access:
Read-only
TAG: GCM Authentication Tag x
The four 32-bit Tag registers contain the final 128-bit GCM Authentication tag “T” when GCM processing is complete. TAG0
corresponds to the first word, TAG3 to the last word.
31
30
29
28
27
26
25
24
TAG
23
22
21
20
19
18
17
16
TAG
15
14
13
12
11
10
9
8
TAG
7
6
5
4
3
2
1
0
TAG