openssl aes

OpenSSL是一个开源的软件库，提供了各种加密算法的实现，其中包括AES加密算法。下面是使用OpenSSL库进行AES加密和解密的示例代码：

1. AES加密

#include <openssl/aes.h>

int main()
{
    AES_KEY aesKey;
    unsigned char userKey[] = "0123456789abcdef";
    unsigned char plainText[] = "Hello, world!";
    unsigned char cipherText[16];
    int bits = 128;

    AES_set_encrypt_key(userKey, bits, &aesKey);
    AES_encrypt(plainText, cipherText, &aesKey);

    return 0;
}

2. AES解密

#include <openssl/aes.h>

int main()
{
    AES_KEY aesKey;
    unsigned char userKey[] = "0123456789abcdef";
    unsigned char cipherText[] = {0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x33, 0xd0, 0x5a, 0x61, 0x9e, 0x1f, 0x5c, 0x2a, 0x18, 0xa5, 0x8f};
    unsigned char plainText[16];
    int bits = 128;

    AES_set_decrypt_key(userKey, bits, &aesKey);
    AES_decrypt(cipherText, plainText, &aesKey);

    return 0;
}