Sample code for implementing AES encryption algorithm in C language

The following is a sample code for implementing the AES encryption algorithm using C language:

#include <stdio.h>

/* AES加密函数 */
void aes_encrypt(unsigned char *plaintext, unsigned char *key) {
    
    
    // 编写你的代码
    // ...
}

int main() {
    
    
    unsigned char plaintext[] = "Hello, world!";
    unsigned char key[] = "0123456789abcdef";
    
    aes_encrypt(plaintext, key);
    
    printf("%s\n", plaintext);  // 输出加密后的密文
    
    return 0;
}

Please note that this is just a simple example, the actual AES encryption algorithm involves more complex operations such as key expansion and round functions. In order to correctly implement the AES encryption algorithm, it is recommended that you refer to the relevant AES algorithm standards or refer to the existing AES encryption library.