/**
@page PKA_ModularExponentiation PKA : Public Key Accelerator
@verbatim
******************************************************************************
* @file Examples_LL/PKA/PKA_ModularExponentiation/readme.txt
* @author MCD Application Team
* @brief Description of the PKA_ModularExponentiation example.
******************************************************************************
*
* Copyright (c) 2020 STMicroelectronics. All rights reserved.
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
@endverbatim
@par Example Description
How to use the low-layer PKA API to execute RSA modular exponentiation.
Example execution:
After startup from reset and system configuration, PKA configuration is performed.
To demonstrate the RSA modular exponentiation, four file have been created using an
external tool, openssl:
Src/rsa_priv_2048.pem (Refer to rsa_priv_2048.c for its creation)
Src/rsa_pub_2048.pem (extracted from rsa_priv_2048.pem. Refer to rsa_pub_2048.c
for its creation)
Src/plaintext.bin (Refer to plaintext.c for its creation)
Src/cipher.bin (build from rsa_pub_2048.pem and plaintext.bin. Refer to
plaintext.c for its creation)
The example:
Compute ciphertext.bin from plaintext.bin and rsa_pub_2048.pem (This is done
with the public key)
Compute plaintext.bin from ciphertext.bin and rsa_priv_2048.pem
After successful sequence, LED2 is turned On.
In case of errors, LED2 is slowly blinking (1sec period).
@par Keywords
Security, PKA, RSA, modular exponentiation, cipher ,decipher
@par Directory contents
- PKA/PKA_ModularExponentiation/Inc/stm32wlxx_it.h Interrupt handlers header file
- PKA/PKA_ModularExponentiation/Inc/main.h Header for main.c module
- PKA/PKA_ModularExponentiation/Inc/stm32_assert.h Template file to include assert_failed function
- PKA/PKA_ModularExponentiation/Src/stm32wlxx_it.c Interrupt handlers
- PKA/PKA_ModularExponentiation/Src/main.c Main program
- PKA/PKA_ModularExponentiation/Src/system_stm32wlxx.c STM32WLxx system source file
- PKA/PKA_ModularExponentiation/Src/plaintext.bin Random 2048 bits
- PKA/PKA_ModularExponentiation/Src/plaintext.c Reflect the content of plaintext.bin in array format
- PKA/PKA_ModularExponentiation/Inc/plaintext.h Header for plaintext.c
- PKA/PKA_ModularExponentiation/Src/ciphertext.bin Ciphered plaintext.bin using openssl
- PKA/PKA_ModularExponentiation/Src/ciphertext.c Reflect the content of ciphertext.bin in array format
- PKA/PKA_ModularExponentiation/Inc/ciphertext.h Header for ciphertext.c
- PKA/PKA_ModularExponentiation/Src/rsa_priv_2048.pem RSA private key generated using openssl
- PKA/PKA_ModularExponentiation/Src/rsa_priv_2048.c Reflect the content of rsa_priv_2048.pem in array format
- PKA/PKA_ModularExponentiation/Inc/rsa_priv_2048.h Header for rsa_priv_2048.c
- PKA/PKA_ModularExponentiation/Src/rsa_pub_2048.pem RSA public key extracted from rsa_priv_2048.pem using openssl
- PKA/PKA_ModularExponentiation/Src/rsa_pub_2048.c Reflect the content of rsa_pub_2048.pem in array format
- PKA/PKA_ModularExponentiation/Inc/rsa_pub_2048.h Header for rsa_pub_2048.c
@par Hardware and Software environment
- This example runs on STM32WL55JCIx devices.
- This example has been tested with NUCLEO-WL55JC RevC board and can be
easily tailored to any other supported device and development board.
@par How to use it ?
In order to make the program work, you must do the following :
- Open your preferred toolchain
- Rebuild all files and load your image into target memory
- Run the example and observe the LED status
* <h3><center>© COPYRIGHT STMicroelectronics</center></h3>
*/
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