js des加密 c 解密

const CryptoJS = require('crypto-js');

// 密钥和初始化向量（IV）
const key = CryptoJS.enc.Utf8.parse('1234567890123456'); // DES密钥需要是8字节
const iv = CryptoJS.enc.Utf8.parse('1234567890123456'); // IV需要是8字节

// 待加密数据
const data = 'Hello, World!';

// 加密
const encrypted = CryptoJS.DES.encrypt(data, key, {
    iv: iv,
    mode: CryptoJS.mode.CBC,
    padding: CryptoJS.pad.Pkcs7
});

console.log('Encrypted:', encrypted.toString());

#include <openssl/des.h>
#include <string.h>
#include <stdio.h>

void des_decrypt(const char *ciphertext, const char *key, const char *iv, char *plaintext) {
    DES_cblock key_block;
    DES_cblock iv_block;
    DES_key_schedule schedule;

    // 设置密钥和IV
    memcpy(key_block, key, 8);
    memcpy(iv_block, iv, 8);
    DES_set_key_unchecked(&key_block, &schedule);

    // 解密
    DES_ncbc_encrypt((unsigned char *)ciphertext, (unsigned char *)plaintext, strlen(ciphertext), &schedule, &iv_block, DES_DECRYPT);

    // 去除填充
    plaintext[strlen(ciphertext) - ((strlen(ciphertext) + 7) / 8) % 8] = '\0';
}

int main() {
    const char *ciphertext = "加密后的数据"; // 替换为实际加密数据
    const char *key = "12345678";
    const char *iv = "12345678";
    char plaintext[100];

    des_decrypt(ciphertext, key, iv, plaintext);
    printf("Decrypted: %s
", plaintext);

    return 0;
}