Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X 데이터 시트
제품 코드
DK-TM4C129X
1.
Enable F8 Mode by setting the F8 bit in the AES_CTRL register.
2.
Select the counter width by programming the
CTR_WIDTH
field in the AES_CTRL register.
3.
Set the key size to 128 bits by setting the
KEY_SIZE
field to 0x1 in the AES_CTRL register.
4.
Load the AES Initialization Vector Input n (AES_IV_IN_n) registers at offset 0x040 to 0x04C.
Subsequence: Initialize XTS AES Core Mode
The steps for XTS mode configuration are as follows:
1.
Enable XTS Mode by configuring the
XTS
field in the AES_CTRL register.
2.
If the
XTS
field in the AES_CTRL register indicates that the AAD length is required, load the
AAD length in the AES_AUTH_LENGTH register.
3.
Load the AES Initialization Vector Input n (AES_IV_IN_n) registers at offset 0x040 to 0x04C.
Subsequence: Initialize CFB AES Core Mode
To initialize the AES code for CFB mode:
1.
Enable CFB Mode by setting the
CFB
bit in the AES_CTRL register.
2.
Load the AES Initialization Vector Input n (AES_IV_IN_n) registers at offset 0x040 to 0x04C.
Subsequence: Initialize ICM AES Core Mode
To initialize the AES code for ICM mode:
1.
Enable ICM Mode by setting the
ICM
bit in the AES_CTRL register.
2.
Configure for a 16-bit counter by programming the
CTR_WIDTH
to 0x0 in the AES_CTRL register.
3.
Load the AES Initialization Vector Input n (AES_IV_IN_n) registers at offset 0x040 to 0x04C.
Subsequence: Initialize CTR AES Core Mode
To initialize CTR mode:
1.
Enable CTR Mode by setting the
CTR
bit in the AES_CTRL register.
2.
Select counter width by programming the
CTR_WIDTH
in the AES_CTRL register.
3.
Load the AES Initialization Vector Input n (AES_IV_IN_n) registers at offset 0x040 to 0x04C.
Subsequence: Initialize CBC AES Core Mode
To configure CBC mode:
1.
Enable CBC Mode by setting the
MODE
bit in the AES_CTRL register.
2.
Load the AES Initialization Vector Input n (AES_IV_IN_n) registers at offset 0x040 to 0x04C.
December 13, 2013
1004
Texas Instruments-Advance Information
Advance Encryption Standard Accelerator (AES)