Datasheet

PIC32MZ Embedded Connectivity with Floating Point Unit (EF) Family
DS60001320B-page 418 Preliminary  2015 Microchip Technology Inc.
26.3 Security Association Structure
Table 26-4 shows the Security Association Structure.
The Crypto Engine uses the Security Association to
determine the settings for processing a Buffer Descrip
-
tor Processor. The Security Association contains:
• Which algorithm to use
• Whether to use engines in parallel (for both
authentication and encryption/decryption)
• The size of the key
• Authentication key
• Encryption/decryption key
• Authentication Initialization Vector (IV)
• Encryption IV
TABLE 26-4: CRYPTO ENGINE SECURITY ASSOCIATION STRUCTURE
Name
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
SA_CTRL 31:24
— —VERIFY— NO_RX OR_EN ICVONLY IRFLAG
23:16 LNC LOADIV FB FLAGS — — — ALGO<6>
15:8 ALGO<5:0> ENCTYPE
KEYSIZE<1>
7:0 KEYSIZE<0> MULTITASK<2:0> CRYPTOALGO<3:0>
SA_AUTHKEY1 31:24 AUTHKEY<31:24>
23:16 AUTHKEY<23:16>
15:8 AUTHKEY<15:8>
7:0 AUTHKEY<7:0>
SA_AUTHKEY2 31:24 AUTHKEY<31:24>
23:16 AUTHKEY<23:16>
15:8 AUTHKEY<15:8>
7:0 AUTHKEY<7:0>
SA_AUTHKEY3 31:24 AUTHKEY<31:24>
23:16 AUTHKEY<23:16>
15:8 AUTHKEY<15:8>
7:0 AUTHKEY<7:0>
SA_AUTHKEY4 31:24 AUTHKEY<31:24>
23:16 AUTHKEY<23:16>
15:8 AUTHKEY<15:8>
7:0 AUTHKEY<7:0>
SA_AUTHKEY5 31:24 AUTHKEY<31:24>
23:16 AUTHKEY<23:16>
15:8 AUTHKEY<15:8>
7:0 AUTHKEY<7:0>
SA_AUTHKEY6 31:24 AUTHKEY<31:24>
23:16 AUTHKEY<23:16>
15:8 AUTHKEY<15:8>
7:0 AUTHKEY<7:0>
SA_AUTHKEY7 31:24 AUTHKEY<31:24>
23:16 AUTHKEY<23:16>
15:8 AUTHKEY<15:8>
7:0 AUTHKEY<7:0>
SA_AUTHKEY8 31:24 AUTHKEY<31:24>
23:16 AUTHKEY<23:16>
15:8 AUTHKEY<15:8>
7:0 AUTHKEY<7:0>
SA_ENCKEY1 31:24 ENCKEY<31:24>
23:16 ENCKEY<23:16>
15:8 ENCKEY<15:8>
7:0 ENCKEY<7:0>
SA_ENCKEY2 31:24 ENCKEY<31:24>