My Ciphertext is not showing #esp32

Using Arduino Programming Questions
1

cipher
cipher2037×900 55.2 KB 

#include "Rij_Consts.h"
#include "Rijndael.h"

//https://www.hanewin.net/encrypt/aes/aes-test.htm   สำหรับเทสเทียบ

void setup() {
 
  Serial.begin(115200);
 
  //mbedtls_aes_context aes;

  //unsigned char iv[16] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
  unsigned char iv[16] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};
 
  //char * key = "abcdefghijklmnop";
  //const unsigned char key[16];
  unsigned char key[16] = {0xE8,0xE9,0xEA,0xEB,0xED,0xEE,0xEF,0xF0,0xF2,0xF3,0xF4,0xF5,0xF7,0xF8,0xF9,0xFA};
  //char key[16] = {0xFA,0xF9,0xF8,0xF7,0xF5,0xF4,0xF3,0xF2,0xF0,0xEF,0xEE,0xED,0xEB,0xEA,0xE9,0xE8};//กลับ

  unsigned char tokey[16];
 
  //char *input = "Tech tutorials x";
  unsigned char input[16] ={0x01,0x4B,0xAF,0x22,0x78,0xA6,0x9D,0x33,0x1D,0x51,0x80,0x10,0x36,0x43,0xE9,0x9A};
  //unsigned char input[16] ={0x9A,0xE9,0x43,0x36,0x10,0x80,0x51,0x1D,0x33,0x9D,0xA6,0x78,0x22,0xAF,0x4B,0x01};//กลับ
  unsigned char output[16]; //6743C3D1519AB4F2CD9A78AB09A511BD ต้องได้ตามนี้


  printf("Testing ECB mode:\n");

  printf("Original Plaintext:\n");
  for(int i = 0; i < 16; ++i){
    printf("%2.2X ", input[i]);
  }
  
  Schedule_Keys(AES_128, key, 16, tokey);

    printf("\n\nKEYt:\n");
  for(int i = 0; i < 16; ++i){
    printf("%2.2X ", tokey[i]);
  }

  Encrypt(AES_128, input, 16, key, output);

  printf("\n\nCiphertext:\n");
  for(int i = 0; i < 16; ++i){
    printf("%2.2X ", output[i]);
  }
 
//  for (int i = 0; i < 16; i++) {
// 
//    char str[3];
// 
//    sprintf(str, "%02x", (int)output[i]);
//    Serial.print(str);
//  }
}
 
void loop() {}
```Preformatted text
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3

This is Rij_Consts.h library

#ifndef RIJNDAEL_CONST_H
#define RIJndAEL_CONST_H

const unsigned char GF_POLYNOMIAL = 0x1b;

const unsigned char SBOX[256] = {
  0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5,
  0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
  0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0,
  0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
  0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc,
  0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
  0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a,
  0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
  0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0,
  0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
  0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b,
  0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
  0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85,
  0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
  0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
  0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
  0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17,
  0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
  0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88,
  0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
  0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c,
  0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
  0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9,
  0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
  0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6,
  0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
  0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e,
  0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
  0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94,
  0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
  0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68,
  0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
};

const unsigned char SBOX_INVERSE[256] = {
  0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38,
  0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
  0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87,
  0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
  0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d,
  0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
  0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2,
  0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
  0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16,
  0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
  0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda,
  0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
  0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a,
  0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
  0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02,
  0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
  0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea,
  0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
  0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85,
  0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
  0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89,
  0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
  0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20,
  0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
  0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31,
  0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
  0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d,
  0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
  0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0,
  0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
  0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26,
  0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
};

const unsigned char RCON[256] = {
  0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40,
  0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 
  0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a,
  0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 
  0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25,
  0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 
  0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08,
  0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 
  0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6,
  0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 
  0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61,
  0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 
  0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01,
  0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 
  0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e,
  0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 
  0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4,
  0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 
  0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8,
  0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 
  0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d,
  0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 
  0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91,
  0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 
  0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d,
  0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 
  0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c,
  0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 
  0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa,
  0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 
  0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66,
  0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d
};

const unsigned char MIX_COL[16] = {
  0x02, 0x03, 0x01, 0x01,
  0x01, 0x02, 0x03, 0x01,
  0x01, 0x01, 0x02, 0x03,
  0x03, 0x01, 0x01, 0x02,
};

const unsigned char MIX_COL_INV[16] = {
  0x0e, 0x0b, 0x0d, 0x09,
  0x09, 0x0e ,0x0b, 0x0d,
  0x0d, 0x09, 0x0e, 0x0b,
  0x0b, 0x0d, 0x09, 0x0e
};

const unsigned char GF_MUL_2[256] = {
  0x00,0x02,0x04,0x06,0x08,0x0a,0x0c,0x0e,0x10,0x12,0x14,0x16,0x18,0x1a,0x1c,0x1e,
  0x20,0x22,0x24,0x26,0x28,0x2a,0x2c,0x2e,0x30,0x32,0x34,0x36,0x38,0x3a,0x3c,0x3e,
  0x40,0x42,0x44,0x46,0x48,0x4a,0x4c,0x4e,0x50,0x52,0x54,0x56,0x58,0x5a,0x5c,0x5e,
  0x60,0x62,0x64,0x66,0x68,0x6a,0x6c,0x6e,0x70,0x72,0x74,0x76,0x78,0x7a,0x7c,0x7e,
  0x80,0x82,0x84,0x86,0x88,0x8a,0x8c,0x8e,0x90,0x92,0x94,0x96,0x98,0x9a,0x9c,0x9e,
  0xa0,0xa2,0xa4,0xa6,0xa8,0xaa,0xac,0xae,0xb0,0xb2,0xb4,0xb6,0xb8,0xba,0xbc,0xbe,
  0xc0,0xc2,0xc4,0xc6,0xc8,0xca,0xcc,0xce,0xd0,0xd2,0xd4,0xd6,0xd8,0xda,0xdc,0xde,
  0xe0,0xe2,0xe4,0xe6,0xe8,0xea,0xec,0xee,0xf0,0xf2,0xf4,0xf6,0xf8,0xfa,0xfc,0xfe,
  0x1b,0x19,0x1f,0x1d,0x13,0x11,0x17,0x15,0x0b,0x09,0x0f,0x0d,0x03,0x01,0x07,0x05,
  0x3b,0x39,0x3f,0x3d,0x33,0x31,0x37,0x35,0x2b,0x29,0x2f,0x2d,0x23,0x21,0x27,0x25,
  0x5b,0x59,0x5f,0x5d,0x53,0x51,0x57,0x55,0x4b,0x49,0x4f,0x4d,0x43,0x41,0x47,0x45,
  0x7b,0x79,0x7f,0x7d,0x73,0x71,0x77,0x75,0x6b,0x69,0x6f,0x6d,0x63,0x61,0x67,0x65,
  0x9b,0x99,0x9f,0x9d,0x93,0x91,0x97,0x95,0x8b,0x89,0x8f,0x8d,0x83,0x81,0x87,0x85,
  0xbb,0xb9,0xbf,0xbd,0xb3,0xb1,0xb7,0xb5,0xab,0xa9,0xaf,0xad,0xa3,0xa1,0xa7,0xa5,
  0xdb,0xd9,0xdf,0xdd,0xd3,0xd1,0xd7,0xd5,0xcb,0xc9,0xcf,0xcd,0xc3,0xc1,0xc7,0xc5,
  0xfb,0xf9,0xff,0xfd,0xf3,0xf1,0xf7,0xf5,0xeb,0xe9,0xef,0xed,0xe3,0xe1,0xe7,0xe5
};

const unsigned char GF_MUL_3[256] = {
  0x00,0x03,0x06,0x05,0x0c,0x0f,0x0a,0x09,0x18,0x1b,0x1e,0x1d,0x14,0x17,0x12,0x11,
  0x30,0x33,0x36,0x35,0x3c,0x3f,0x3a,0x39,0x28,0x2b,0x2e,0x2d,0x24,0x27,0x22,0x21,
  0x60,0x63,0x66,0x65,0x6c,0x6f,0x6a,0x69,0x78,0x7b,0x7e,0x7d,0x74,0x77,0x72,0x71,
  0x50,0x53,0x56,0x55,0x5c,0x5f,0x5a,0x59,0x48,0x4b,0x4e,0x4d,0x44,0x47,0x42,0x41,
  0xc0,0xc3,0xc6,0xc5,0xcc,0xcf,0xca,0xc9,0xd8,0xdb,0xde,0xdd,0xd4,0xd7,0xd2,0xd1,
  0xf0,0xf3,0xf6,0xf5,0xfc,0xff,0xfa,0xf9,0xe8,0xeb,0xee,0xed,0xe4,0xe7,0xe2,0xe1,
  0xa0,0xa3,0xa6,0xa5,0xac,0xaf,0xaa,0xa9,0xb8,0xbb,0xbe,0xbd,0xb4,0xb7,0xb2,0xb1,
  0x90,0x93,0x96,0x95,0x9c,0x9f,0x9a,0x99,0x88,0x8b,0x8e,0x8d,0x84,0x87,0x82,0x81,
  0x9b,0x98,0x9d,0x9e,0x97,0x94,0x91,0x92,0x83,0x80,0x85,0x86,0x8f,0x8c,0x89,0x8a,
  0xab,0xa8,0xad,0xae,0xa7,0xa4,0xa1,0xa2,0xb3,0xb0,0xb5,0xb6,0xbf,0xbc,0xb9,0xba,
  0xfb,0xf8,0xfd,0xfe,0xf7,0xf4,0xf1,0xf2,0xe3,0xe0,0xe5,0xe6,0xef,0xec,0xe9,0xea,
  0xcb,0xc8,0xcd,0xce,0xc7,0xc4,0xc1,0xc2,0xd3,0xd0,0xd5,0xd6,0xdf,0xdc,0xd9,0xda,
  0x5b,0x58,0x5d,0x5e,0x57,0x54,0x51,0x52,0x43,0x40,0x45,0x46,0x4f,0x4c,0x49,0x4a,
  0x6b,0x68,0x6d,0x6e,0x67,0x64,0x61,0x62,0x73,0x70,0x75,0x76,0x7f,0x7c,0x79,0x7a,
  0x3b,0x38,0x3d,0x3e,0x37,0x34,0x31,0x32,0x23,0x20,0x25,0x26,0x2f,0x2c,0x29,0x2a,
  0x0b,0x08,0x0d,0x0e,0x07,0x04,0x01,0x02,0x13,0x10,0x15,0x16,0x1f,0x1c,0x19,0x1a
};

const unsigned char GF_MUL_9[256] = {
  0x00,0x09,0x12,0x1b,0x24,0x2d,0x36,0x3f,0x48,0x41,0x5a,0x53,0x6c,0x65,0x7e,0x77,
  0x90,0x99,0x82,0x8b,0xb4,0xbd,0xa6,0xaf,0xd8,0xd1,0xca,0xc3,0xfc,0xf5,0xee,0xe7,
  0x3b,0x32,0x29,0x20,0x1f,0x16,0x0d,0x04,0x73,0x7a,0x61,0x68,0x57,0x5e,0x45,0x4c,
  0xab,0xa2,0xb9,0xb0,0x8f,0x86,0x9d,0x94,0xe3,0xea,0xf1,0xf8,0xc7,0xce,0xd5,0xdc,
  0x76,0x7f,0x64,0x6d,0x52,0x5b,0x40,0x49,0x3e,0x37,0x2c,0x25,0x1a,0x13,0x08,0x01,
  0xe6,0xef,0xf4,0xfd,0xc2,0xcb,0xd0,0xd9,0xae,0xa7,0xbc,0xb5,0x8a,0x83,0x98,0x91,
  0x4d,0x44,0x5f,0x56,0x69,0x60,0x7b,0x72,0x05,0x0c,0x17,0x1e,0x21,0x28,0x33,0x3a,
  0xdd,0xd4,0xcf,0xc6,0xf9,0xf0,0xeb,0xe2,0x95,0x9c,0x87,0x8e,0xb1,0xb8,0xa3,0xaa,
  0xec,0xe5,0xfe,0xf7,0xc8,0xc1,0xda,0xd3,0xa4,0xad,0xb6,0xbf,0x80,0x89,0x92,0x9b,
  0x7c,0x75,0x6e,0x67,0x58,0x51,0x4a,0x43,0x34,0x3d,0x26,0x2f,0x10,0x19,0x02,0x0b,
  0xd7,0xde,0xc5,0xcc,0xf3,0xfa,0xe1,0xe8,0x9f,0x96,0x8d,0x84,0xbb,0xb2,0xa9,0xa0,
  0x47,0x4e,0x55,0x5c,0x63,0x6a,0x71,0x78,0x0f,0x06,0x1d,0x14,0x2b,0x22,0x39,0x30,
  0x9a,0x93,0x88,0x81,0xbe,0xb7,0xac,0xa5,0xd2,0xdb,0xc0,0xc9,0xf6,0xff,0xe4,0xed,
  0x0a,0x03,0x18,0x11,0x2e,0x27,0x3c,0x35,0x42,0x4b,0x50,0x59,0x66,0x6f,0x74,0x7d,
  0xa1,0xa8,0xb3,0xba,0x85,0x8c,0x97,0x9e,0xe9,0xe0,0xfb,0xf2,0xcd,0xc4,0xdf,0xd6,
  0x31,0x38,0x23,0x2a,0x15,0x1c,0x07,0x0e,0x79,0x70,0x6b,0x62,0x5d,0x54,0x4f,0x46
};

const unsigned char GF_MUL_11[256] = {
  0x00,0x0b,0x16,0x1d,0x2c,0x27,0x3a,0x31,0x58,0x53,0x4e,0x45,0x74,0x7f,0x62,0x69,
  0xb0,0xbb,0xa6,0xad,0x9c,0x97,0x8a,0x81,0xe8,0xe3,0xfe,0xf5,0xc4,0xcf,0xd2,0xd9,
  0x7b,0x70,0x6d,0x66,0x57,0x5c,0x41,0x4a,0x23,0x28,0x35,0x3e,0x0f,0x04,0x19,0x12,
  0xcb,0xc0,0xdd,0xd6,0xe7,0xec,0xf1,0xfa,0x93,0x98,0x85,0x8e,0xbf,0xb4,0xa9,0xa2,
  0xf6,0xfd,0xe0,0xeb,0xda,0xd1,0xcc,0xc7,0xae,0xa5,0xb8,0xb3,0x82,0x89,0x94,0x9f,
  0x46,0x4d,0x50,0x5b,0x6a,0x61,0x7c,0x77,0x1e,0x15,0x08,0x03,0x32,0x39,0x24,0x2f,
  0x8d,0x86,0x9b,0x90,0xa1,0xaa,0xb7,0xbc,0xd5,0xde,0xc3,0xc8,0xf9,0xf2,0xef,0xe4,
  0x3d,0x36,0x2b,0x20,0x11,0x1a,0x07,0x0c,0x65,0x6e,0x73,0x78,0x49,0x42,0x5f,0x54,
  0xf7,0xfc,0xe1,0xea,0xdb,0xd0,0xcd,0xc6,0xaf,0xa4,0xb9,0xb2,0x83,0x88,0x95,0x9e,
  0x47,0x4c,0x51,0x5a,0x6b,0x60,0x7d,0x76,0x1f,0x14,0x09,0x02,0x33,0x38,0x25,0x2e,
  0x8c,0x87,0x9a,0x91,0xa0,0xab,0xb6,0xbd,0xd4,0xdf,0xc2,0xc9,0xf8,0xf3,0xee,0xe5,
  0x3c,0x37,0x2a,0x21,0x10,0x1b,0x06,0x0d,0x64,0x6f,0x72,0x79,0x48,0x43,0x5e,0x55,
  0x01,0x0a,0x17,0x1c,0x2d,0x26,0x3b,0x30,0x59,0x52,0x4f,0x44,0x75,0x7e,0x63,0x68,
  0xb1,0xba,0xa7,0xac,0x9d,0x96,0x8b,0x80,0xe9,0xe2,0xff,0xf4,0xc5,0xce,0xd3,0xd8,
  0x7a,0x71,0x6c,0x67,0x56,0x5d,0x40,0x4b,0x22,0x29,0x34,0x3f,0x0e,0x05,0x18,0x13,
  0xca,0xc1,0xdc,0xd7,0xe6,0xed,0xf0,0xfb,0x92,0x99,0x84,0x8f,0xbe,0xb5,0xa8,0xa3
};

const unsigned char GF_MUL_13[256] = {
  0x00,0x0d,0x1a,0x17,0x34,0x39,0x2e,0x23,0x68,0x65,0x72,0x7f,0x5c,0x51,0x46,0x4b,
  0xd0,0xdd,0xca,0xc7,0xe4,0xe9,0xfe,0xf3,0xb8,0xb5,0xa2,0xaf,0x8c,0x81,0x96,0x9b,
  0xbb,0xb6,0xa1,0xac,0x8f,0x82,0x95,0x98,0xd3,0xde,0xc9,0xc4,0xe7,0xea,0xfd,0xf0,
  0x6b,0x66,0x71,0x7c,0x5f,0x52,0x45,0x48,0x03,0x0e,0x19,0x14,0x37,0x3a,0x2d,0x20,
  0x6d,0x60,0x77,0x7a,0x59,0x54,0x43,0x4e,0x05,0x08,0x1f,0x12,0x31,0x3c,0x2b,0x26,
  0xbd,0xb0,0xa7,0xaa,0x89,0x84,0x93,0x9e,0xd5,0xd8,0xcf,0xc2,0xe1,0xec,0xfb,0xf6,
  0xd6,0xdb,0xcc,0xc1,0xe2,0xef,0xf8,0xf5,0xbe,0xb3,0xa4,0xa9,0x8a,0x87,0x90,0x9d,
  0x06,0x0b,0x1c,0x11,0x32,0x3f,0x28,0x25,0x6e,0x63,0x74,0x79,0x5a,0x57,0x40,0x4d,
  0xda,0xd7,0xc0,0xcd,0xee,0xe3,0xf4,0xf9,0xb2,0xbf,0xa8,0xa5,0x86,0x8b,0x9c,0x91,
  0x0a,0x07,0x10,0x1d,0x3e,0x33,0x24,0x29,0x62,0x6f,0x78,0x75,0x56,0x5b,0x4c,0x41,
  0x61,0x6c,0x7b,0x76,0x55,0x58,0x4f,0x42,0x09,0x04,0x13,0x1e,0x3d,0x30,0x27,0x2a,
  0xb1,0xbc,0xab,0xa6,0x85,0x88,0x9f,0x92,0xd9,0xd4,0xc3,0xce,0xed,0xe0,0xf7,0xfa,
  0xb7,0xba,0xad,0xa0,0x83,0x8e,0x99,0x94,0xdf,0xd2,0xc5,0xc8,0xeb,0xe6,0xf1,0xfc,
  0x67,0x6a,0x7d,0x70,0x53,0x5e,0x49,0x44,0x0f,0x02,0x15,0x18,0x3b,0x36,0x21,0x2c,
  0x0c,0x01,0x16,0x1b,0x38,0x35,0x22,0x2f,0x64,0x69,0x7e,0x73,0x50,0x5d,0x4a,0x47,
  0xdc,0xd1,0xc6,0xcb,0xe8,0xe5,0xf2,0xff,0xb4,0xb9,0xae,0xa3,0x80,0x8d,0x9a,0x97
};

const unsigned char GF_MUL_14[256] = {
  0x00,0x0e,0x1c,0x12,0x38,0x36,0x24,0x2a,0x70,0x7e,0x6c,0x62,0x48,0x46,0x54,0x5a,
  0xe0,0xee,0xfc,0xf2,0xd8,0xd6,0xc4,0xca,0x90,0x9e,0x8c,0x82,0xa8,0xa6,0xb4,0xba,
  0xdb,0xd5,0xc7,0xc9,0xe3,0xed,0xff,0xf1,0xab,0xa5,0xb7,0xb9,0x93,0x9d,0x8f,0x81,
  0x3b,0x35,0x27,0x29,0x03,0x0d,0x1f,0x11,0x4b,0x45,0x57,0x59,0x73,0x7d,0x6f,0x61,
  0xad,0xa3,0xb1,0xbf,0x95,0x9b,0x89,0x87,0xdd,0xd3,0xc1,0xcf,0xe5,0xeb,0xf9,0xf7,
  0x4d,0x43,0x51,0x5f,0x75,0x7b,0x69,0x67,0x3d,0x33,0x21,0x2f,0x05,0x0b,0x19,0x17,
  0x76,0x78,0x6a,0x64,0x4e,0x40,0x52,0x5c,0x06,0x08,0x1a,0x14,0x3e,0x30,0x22,0x2c,
  0x96,0x98,0x8a,0x84,0xae,0xa0,0xb2,0xbc,0xe6,0xe8,0xfa,0xf4,0xde,0xd0,0xc2,0xcc,
  0x41,0x4f,0x5d,0x53,0x79,0x77,0x65,0x6b,0x31,0x3f,0x2d,0x23,0x09,0x07,0x15,0x1b,
  0xa1,0xaf,0xbd,0xb3,0x99,0x97,0x85,0x8b,0xd1,0xdf,0xcd,0xc3,0xe9,0xe7,0xf5,0xfb,
  0x9a,0x94,0x86,0x88,0xa2,0xac,0xbe,0xb0,0xea,0xe4,0xf6,0xf8,0xd2,0xdc,0xce,0xc0,
  0x7a,0x74,0x66,0x68,0x42,0x4c,0x5e,0x50,0x0a,0x04,0x16,0x18,0x32,0x3c,0x2e,0x20,
  0xec,0xe2,0xf0,0xfe,0xd4,0xda,0xc8,0xc6,0x9c,0x92,0x80,0x8e,0xa4,0xaa,0xb8,0xb6,
  0x0c,0x02,0x10,0x1e,0x34,0x3a,0x28,0x26,0x7c,0x72,0x60,0x6e,0x44,0x4a,0x58,0x56,
  0x37,0x39,0x2b,0x25,0x0f,0x01,0x13,0x1d,0x47,0x49,0x5b,0x55,0x7f,0x71,0x63,0x6d,
  0xd7,0xd9,0xcb,0xc5,0xef,0xe1,0xf3,0xfd,0xa7,0xa9,0xbb,0xb5,0x9f,0x91,0x83,0x8d
};

#endif
4

I'm sorry I'm new here but My code is not an error. I can compile and upload it to my ESP-32 board. My problem is Ciphertext not showing up. I think I'm missing something such as encryption, decryption.

5

This is Rijndael.h library

enum RIJNDAEL_TYPE {
  AES_128,
  AES_192,
  AES_256
};

#define BLOCK_SIZE 16

//Necessary for implementing various modes of operation
unsigned char IV_ONE[BLOCK_SIZE];
unsigned char IV_TWO[BLOCK_SIZE];

//Rotates a 4 byte word amount bytes to the left
void Rotate(const int amount, unsigned char* input){
  for(int i = 0; i < amount; ++i){
    unsigned char temp = input[0];
    input[0] = input[1];
    input[1] = input[2];
    input[2] = input[3];
    input[3] = temp;
  }
  return;
}

void KS_Core(const unsigned char iteration, unsigned char* input){
  Rotate(1, input);
  for(int i = 0; i < 4; ++i){
    input[i] = SBOX[input[i]];
  }
  input[0] = input[0] ^ RCON[iteration];
}

void KS_XOR(const unsigned char* temp, unsigned char* sched_keys, const int ksiz, int sk_iter){
  //++sk_iter;
  for(int i = 0; i < 4; ++i){
    sched_keys[sk_iter + i] = sched_keys[sk_iter + i - ksiz] ^ temp[i];
  }
  return;
}

void temp_getprev(unsigned char* temp, const unsigned char* sched_keys, int sk_iter){
  for(int i = 0; i < 4; ++i){
    temp[i] = sched_keys[sk_iter - (3 - i) - 1];
  }
  return;
}

void Schedule_Keys(enum RIJNDAEL_TYPE type, const unsigned char* key, const int keylen, unsigned char* sched_keys){

  //Set up the various variables that depend on our keysize
  int ksiz, numbytes, lastprocess;
  switch(type){
  case AES_128:
    ksiz = 16;
    numbytes = 176;
    lastprocess = 0;
    break;
  case AES_192:
    ksiz = 24;
    numbytes = 208;
    lastprocess = 2;
    break;
  case AES_256:
    ksiz = 32;
    numbytes = 240;
    lastprocess = 3;
    break;
  default:
    ksiz = 0;
    numbytes = 0;
    lastprocess = 0;
  }

  int bytes_generated = ksiz;
  //Copy our key into the first ksiz bytes, repeating if necessary
  for(int i = 0; i < ksiz; ++i){
    sched_keys[i] = key[i % keylen];
  }
  
  int rcon_iter = 1;

  numbytes=32;

  unsigned char temp[4];
  while(bytes_generated < numbytes){
    temp_getprev(temp, sched_keys, bytes_generated);
    KS_Core(rcon_iter, temp);
    ++rcon_iter;
    KS_XOR(temp, sched_keys, ksiz, bytes_generated);
    bytes_generated += 4;
    for(int i = 0; i < 3 && bytes_generated < numbytes; ++i, bytes_generated += 4){
      temp_getprev(temp, sched_keys, bytes_generated);
      KS_XOR(temp, sched_keys, ksiz, bytes_generated);
    }
    if(type == AES_256 && bytes_generated < numbytes){
      temp_getprev(temp, sched_keys, bytes_generated);
      for(int i = 0; i < 4; ++i)
	temp[i] = SBOX[temp[i]];
      KS_XOR(temp, sched_keys, ksiz, bytes_generated);
      bytes_generated += 4;
    }
    for(int i = 0; i < lastprocess && bytes_generated != numbytes; ++i, bytes_generated += 4){
      temp_getprev(temp, sched_keys, bytes_generated);
      KS_XOR(temp, sched_keys, ksiz, bytes_generated);
    }
  }
  return;
}

void sub_bytes(unsigned char box[4][4], int inv){
  const unsigned char* lookupTable = SBOX;
  if(inv)
    lookupTable = SBOX_INVERSE;
  for(int col = 0; col < 4; ++col){
    for(int row = 0; row < 4; ++row){
      box[col][row] = lookupTable[box[col][row]];
    }
  }
  return;
}

void shift_rows(unsigned char box[4][4], int inv){
  for(int shift = 1; shift < 4; ++shift){
    if(inv)
      Rotate(shift, box[4 - shift]);
    else
      Rotate(shift, box[shift]);
  }
  return;
}

void mix_cols(unsigned char box[4][4], int inv){
  unsigned char tbox[4][4];
  const unsigned char* mult_values = MIX_COL;
  if(inv)
    mult_values = MIX_COL_INV;
  
  for(int trow = 0; trow < 4; ++trow){
    for(int tcol = 0; tcol < 4; ++tcol){
      int sum = 0;
      for(int i = 0; i < 4; ++i){
	int mplier = box[i][tcol];
	int mcand = mult_values[(trow * 4) + (i * 1)];
	int result = mplier;
	switch(mcand){
	case 2:
	  result = GF_MUL_2[mplier];
	  break;
	case 3:
	  result = GF_MUL_3[mplier];
	  break;
	case 9:
	  result = GF_MUL_9[mplier];
	  break;
	case 11:
	  result = GF_MUL_11[mplier];
	  break;
	case 13:
	  result = GF_MUL_13[mplier];
	  break;
	case 14:
	  result = GF_MUL_14[mplier];
	  break;
	}
	sum ^= result;
      }
      tbox[trow][tcol] = sum;
    }
  }
  for(int row = 0; row < 4; ++row){
    for(int col = 0; col < 4; ++ col){
      box[row][col] = tbox[row][col];
    }
  }
  return;
}

void add_keys(unsigned char box[4][4], const unsigned char* keys, const int round){
  for(int row = 0; row < 4; ++row){
    for(int col = 0; col < 4; ++col){
      box[col][row] ^= keys[BLOCK_SIZE * round + ((4 * row) + col)];
    }
  }
  return;
}



void Encrypt_Block(enum RIJNDAEL_TYPE type, const unsigned char* plaintext, const unsigned char* keys, unsigned char* cipher){
  unsigned char box[4][4];
  int rounds = 0;
  switch(type){
  case AES_128:
    rounds = 10;
    break;
  case AES_192:
    rounds = 12;
    break;
  case AES_256:
    rounds = 14;
    break;
  }

  //Load our plaintext into the 4x4 byte array and immediately add the initial round key
  for(int row = 0; row < 4; ++row){
    for(int col = 0; col < 4; ++col){
      box[col][row] = plaintext[4 * row + col] ^ keys[(4 * row + col)];
    }
  }

  //Perform our round operations
  for(int curround = 1; curround <= rounds; ++curround){
    sub_bytes(box, 0);
    shift_rows(box, 0);
    if(curround != rounds)
      mix_cols(box, 0);
    add_keys(box, keys, curround);
  }
  
  //Copy the 4x4 array into our ciphertext
  for(int row = 0; row < 4; ++row){
    for(int col = 0; col < 4; ++col){
      cipher[4 * row + col] = box[col][row];
    }
  }
  
  return;
}

void Decrypt_Block(enum RIJNDAEL_TYPE type, const unsigned char* ciphertext, const unsigned char* keys, unsigned char* plain){
  unsigned char box[4][4];
  int rounds = 0;
  switch(type){
  case AES_128:
    rounds = 10;
    break;
  case AES_192:
    rounds = 12;
    break;
  case AES_256:
    rounds = 14;
    break;
  }
  
    //Load our ciphertext into the 4x4 byte array and immediately add the initial round key
  for(int row = 0; row < 4; ++row){
    for(int col = 0; col < 4; ++col){
      box[col][row] = ciphertext[4 * row + col] ^ keys[(rounds) * BLOCK_SIZE + (4 * row + col)];
    }
  }
  
  //Perform our round operations
  for(int curround = rounds - 1; curround >= 0; --curround){
    shift_rows(box, 1);
    sub_bytes(box, 1);
    add_keys(box, keys, curround);
    if(curround != 0)
      mix_cols(box, 1);
  }
  
  //Copy the 4x4 array into our plaintext
  for(int row = 0; row < 4; ++row){
    for(int col = 0; col < 4; ++col){
      plain[4 * row + col] = box[col][row];
    }
  }
  
  return;
}

//Assumes plaintext has already been padded to have length of multiple 16
void Encrypt(enum RIJNDAEL_TYPE type, const unsigned char* plaintext, const int plaintext_len, const unsigned char* keys,  unsigned char* cipher){
  for(int i = 0; i < plaintext_len; i += BLOCK_SIZE){
    Encrypt_Block(type, plaintext + i, keys, cipher + i);
  }
}

void Decrypt(enum RIJNDAEL_TYPE type, const unsigned char* ciphertext, const int plaintext_len, const unsigned char* keys,  unsigned char* plain){
  for(int i = 0; i < plaintext_len; i += BLOCK_SIZE){
    Decrypt_Block(type, ciphertext + i, keys, plain + i);
  }
}

void Apply_OFB_Mode(enum RIJNDAEL_TYPE type, const unsigned char* plaintext, const int plainlength, const unsigned char* iv, const unsigned char* keys, unsigned char* cipher){

  unsigned char* iv_one = IV_ONE;
  unsigned char* iv_two = IV_TWO;

  for(int i = 0; i < BLOCK_SIZE; ++i){
    iv_one[i] = iv[i]; 
  }

  for(int i = 0; i < plainlength; i += BLOCK_SIZE){
    Encrypt_Block(type, iv_one, keys, iv_two);
    unsigned char* t = iv_one;
    iv_one = iv_two;
    iv_two = t;
    for(int j = 0; j < BLOCK_SIZE; ++j){
      cipher[i + j] = plaintext[i + j] ^ iv_one[j];
    }
  }
  return;
}
6

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