Datasheet

42.8.11 Hash Key (GCM mode only)
Name: HASHKEY
Offset: 0x5C + n*0x04 [n=0..3]
Reset: 0x00000000
Property: PAC Write-protection
Bit 31 30 29 28 27 26 25 24
HASHKEY[31:24]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bit 23 22 21 20 19 18 17 16
HASHKEY[23:16]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bit 15 14 13 12 11 10 9 8
HASHKEY[15:8]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bit 7 6 5 4 3 2 1 0
HASHKEY[7:0]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
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.
SAM D5x/E5x Family Data Sheet
AES – Advanced Encryption Standard
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1439