aes256_ex1_encryptDecrypt.c

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//******************************************************************************
//******************************************************************************
#include "driverlib.h"
 
uint8_t Data[16] =
    {0x00, 0x11, 0x22, 0x33,
    0x44, 0x55, 0x66, 0x77,
    0x88, 0x99, 0xaa, 0xbb,
    0xcc, 0xdd, 0xee, 0xff
    };
 
uint8_t CipherKey[32] =
    {0x00, 0x01, 0x02, 0x03,
    0x04, 0x05, 0x06, 0x07,
    0x08, 0x09, 0x0a, 0x0b,
    0x0c, 0x0d, 0x0e, 0x0f,
    0x10, 0x11, 0x12, 0x13,
    0x14, 0x15, 0x16, 0x17,
    0x18, 0x19, 0x1a, 0x1b,
    0x1c, 0x1d, 0x1e, 0x1f
    };
 
uint8_t DataAESencrypted[16];       // Encrypted data
uint8_t DataAESdecrypted[16];       // Decrypted data
int i = 0;
 
void main(void){
    // stop watchdog
    WDT_A_hold(WDT_A_BASE);
 
    // Load a cipher key to module
    AES256_setCipherKey(AES256_BASE, CipherKey, AES256_KEYLENGTH_256BIT);
 
    // Encrypt data with preloaded cipher key
    AES256_encryptData(AES256_BASE, Data, DataAESencrypted);
 
    // Load a cipher key to module
    AES256_setDecipherKey(AES256_BASE, CipherKey, AES256_KEYLENGTH_256BIT);
 
    // Decrypt data
    AES256_decryptData(AES256_BASE, DataAESencrypted, DataAESdecrypted);
 
    // Array DataunAES should now contain the same data as array Data
 
    while(1){};
}