void aes_encrypt(uint8_t *key, uint8_t *in, uint8_t *out)的示例代码，不使用openssl

以下是一个使用AES加密算法的示例代码，不使用openssl：

#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include "aes.h"

void aes_encrypt(uint8_t *key, uint8_t *in, uint8_t *out) {
    struct AES_ctx ctx;
    uint8_t iv[AES_BLOCKLEN] = {0};
    AES_init_ctx_iv(&ctx, key, iv);
    AES_ECB_encrypt(&ctx, in, out);
}

int main() {
    uint8_t key[AES_KEYLEN] = {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c};
    uint8_t in[AES_BLOCKLEN] = {0x32, 0x43, 0xf6, 0xa8, 0x88, 0x5a, 0x30, 0x8d, 0x31, 0x31, 0x98, 0xa2, 0xe0, 0x37, 0x07, 0x34};
    uint8_t out[AES_BLOCKLEN];
    aes_encrypt(key, in, out);
    printf("Encrypted: ");
    for (int i = 0; i < AES_BLOCKLEN; i++) {
        printf("%02x", out[i]);
    }
    printf("\n");
    return 0;
}