Thread: About aes

Originally Posted by BobS0327

Code:

//Module name test.c
//Compile:
//cl /DINTERMEDIATE_VALUE_KAT /DTRACE_KAT_MCT test.c rijndael-alg-fst.c rijndael-api-fst.c

#include <stdio.h>
#include <string.h>
#include "rijndael-api-fst.h"

int main(void) {
    u8 input[16];
    u8 output[16];
    int i, keyLength = 128;
    keyInstance keyInst;
    BYTE keyMaterial[320];
    cipherInstance cipherInst;
    memset(keyMaterial, 0, sizeof (keyMaterial));
    for (i = 0; i < keyLength/8; i++) {
        sprintf(&keyMaterial[2*i], "%02X", i);
    }
    sprintf(input, "Gumit was here!!");
    /* encryption */
    makeKey(&keyInst, DIR_ENCRYPT, keyLength, keyMaterial);
    cipherInit(&cipherInst, MODE_ECB, NULL);
    blockEncrypt(&cipherInst, &keyInst, input, 128, output);
    /* decryption: */   
    makeKey(&keyInst, DIR_DECRYPT, keyLength, keyMaterial);
    cipherInit(&cipherInst, MODE_ECB, NULL);
    memset(input, 0, sizeof input);
    blockDecrypt(&cipherInst, &keyInst, output, 128, input);
    for (i = 0; i < 16; i++)
        printf("%c",input[i]);
    printf("\n");
    return 0;
}

Hi,
first so thanks for your helps.
i have a question;
Is the test.c that my sent file or your code? Are they same?

Best regards...

Hi,

Finally I have worked the code, .

But I have a problem . I am trying upload the code to ST72f63BU6 microcontrollers that has 1k RAM. When I try working the code, it gives me overflow error. I don`t think so, that it costs much storage.

How can i solve this problem?

Regards...