Datasheet

PIC32MZ Embedded Connectivity with Floating Point Unit (EF) Family
DS60001320B-page 422 Preliminary  2015 Microchip Technology Inc.
Figure 26-10: Format of SA_CTRL (Continued)
bit 16-10 ALGO<6:0>: Type of Algorithm to Use
1xxxxxx = HMAC 1
x1xxxxx = SHA-256
xx1xxxx = SHA1
xxx1xxx = MD5
xxxx1xx = AES
xxxxx1x = TDES
xxxxxx1 = DES
bit 9 ENC: Type of Encryption Setting
1 = Encryption
0 = Decryption
bit 8-7 KEYSIZE<1:0>: Size of Keys in SA_AUTHKEYx or SA_ENCKEYx
11 = Reserved; do not use
10 = 256 bits
01 = 192 bits
00 = 128 bits
(1)
bit 6-4 MULTITASK<2:0>: How to Combine Parallel Operations in the Crypto Engine
111 = Parallel pass (decrypt and authenticate incoming data in parallel)
101 = Pipe pass (encrypt the incoming data, and then perform authentication on the encrypted data)
011 = Reserved
010 = Reserved
001 = Reserved
000 = Encryption or authentication or decryption (no pass)
bit 3-0 CRYPTOALGO<3:0>: Mode of operation for the Crypto Algorithm
1111 = Reserved
1110 = AES_GCM (for AES processing)
1101 = RCTR (for AES processing)
1100 = RCBC_MAC (for AES processing)
1011 = ROFB (for AES processing)
1010 = RCFB (for AES processing)
1001 = RCBC (for AES processing)
1000 = REBC (for AES processing)
0111 = TOFB (for Triple-DES processing)
0110 = TCFB (for Triple-DES processing)
0101 = TCBC (for Triple-DES processing)
0100 = TECB (for Triple-DES processing)
0011 = OFB (for DES processing)
0010 = CFB (for DES processing)
0001 = CBC (for DES processing)
0000 = ECB (for DES processing)
Note 1: This setting does not alter the size of SA_AUTHKEYx or SA_ENCKEYx in the Security Association,
only the number of bits of SA_AUTHKEYx and SA_ENCKEYx that are used.