38.8.11 Hash Key (GCM mode only)

Name: HASHKEY
Offset: 0x5C + n*0x04 [n=0..3]
Reset: 0x00000000
Property: PAC Write-protection

Bit 3130292827262524 
 HASHKEY[31:24] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 
Bit 2322212019181716 
 HASHKEY[23:16] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 
Bit 15141312111098 
 HASHKEY[15:8] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 
Bit 76543210 
 HASHKEY[7:0] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 

Bits 31:0 – HASHKEY[31:0] Hash Key Value

The four 32-bit HASHKEY registers contain the 128-bit Hash Key value computed from the AES KEY. The Hash Key value can also be programmed offering single GF128 multiplication possibilities.