Introduction
This example demonstrates Cipher Block Chaining mode(CBC) of AES(Advanced Encryption Standard) using AES accelerator. The AES supported modes are CBC, ECB and CMAC and all three modes comes in 128-bit and 256-bit implementations. This example explains the steps to build and run for Dthe aes cbc-256.
Parameter | Value |
CPU + OS | r5fss0-0 nortos |
Toolchain | ti-arm-clang |
Boards | am263x-cc |
Example folder | examples/security/crypto/dthe_aes/crypto_aes_cbc_256/ |
Supported Device Type | HS-FS |
Build the aes cbc 256 example
$make -s -C examples/security/crypto/dthe_aes/crypto_aes_cbc_256/<soc>-<board>/r5fss0-0_nortos/ti-arm-clang all DEVICE=<soc>
Steps to Run through ROM Boot flow
- Note
- If the Device Type is HS-SE, an additional flag "DEVICE_TYPE=HS" is passed for building SBL. The flag results in generation of sbl image with suffix "hs.tiimage" which can only be used when device type is HS-SE.
Via SBL_uart bootloader
Build sbl_uart
make -s -C examples/drivers/boot/sbl_uart/<soc>-<board>/r5fss0-0_nortos/ti-arm-clang/ all DEVICE=<soc>
Set board for UART boot
See EVM setup
Run UART_bootloader
python uart_bootloader.py -p <COMxx> --bootloader=sbl_prebuilt/<soc>-<board>/sbl_uart.release.hs.tiimage --file=../../examples/security/crypto/dthe_aes/crypto_aes_cbc_256/<soc>-<board>/r5fss0-0_nortos/ti-arm-clang/crypto_dthe_aes_cbc_256.release.appimage
Sample output
On successful boot, R5 log at uart terminal, will have the following output. UART Console:
[CRYPTO] DTHE AES CBC-256 example started ...
[CRYPTO] DTHE AES CBC-256 example completed!!
All tests have passed!!
Via SBL_qspi bootloader
Build sbl_qspi
make -C examples/drivers/boot/sbl_qspi/<soc>-<board>/r5fss0-0_nortos/ti-arm-clang/ all DEVICE=<soc>
Build sbl_uart_uniflash
make -s -C examples/drivers/boot/sbl_uart_uniflash/<soc>-<board>/r5fss0-0_nortos/ti-arm-clang/ all DEVICE=<soc>
Set UART boot mode
See EVM setup
Edit default_sbl_qspi.cfg to include the correct images
Run UART_uniflash
python uart_uniflash.py -p <COMxx> --cfg=sbl_prebuilt/<soc>-<board>/default_sbl_qspi.cfg
Set QSPI boot mode
See EVM setup
Sample output
On successful boot, R5 log at uart terminal, will have the following output.
UART Console:
[CRYPTO] DTHE AES CBC-256 example started ...
[CRYPTO] DTHE AES CBC-256 example completed!!
All tests have passed!!
See Also
DTHE