Encryption 如何在AES加密（Arduino）中手动设置密钥和IV

我目前正在为Arduino使用AESLib。我想让我的Raspberry PI和Arduino通过AES加密进行通信。为此，IV和密钥将由Raspberry PI生成并发送到我的Arduino。IV和键以字符串格式发送。我对C++非常陌生，有人知道如何手动设置AES键和IV吗？尤其是静脉注射，我不知道该怎么做

另一种方法也不起作用。因为我看不到Arduino脚本生成的IV是什么

#include "AESLib.h"
AESLib aesLib;

unsigned char cleartext[INPUT_BUFFER_LIMIT] = {0}; // THIS IS INPUT BUFFER (FOR TEXT)
unsigned char ciphertext[2*INPUT_BUFFER_LIMIT] = {0}; // THIS IS OUTPUT BUFFER (FOR BASE64-ENCODED ENCRYPTED DATA)
unsigned char readBuffer [18] = {0}; //

// AES Encryption Key (same as in node-js example)
  byte aes_key[] = { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C};

  // General initialization vector (same as in node-js example) (you must use your own IV's in production for full security!!!)
  byte aes_iv[N_BLOCK] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA };



// Generate IV (once)
void aes_init() {
  aesLib.gen_iv(aes_iv);
  aesLib.set_paddingmode((paddingMode)0);