HarmonyOS 鸿蒙Next DES解密

发布于 1周前 作者 h691938207 来自 鸿蒙OS

HarmonyOS 鸿蒙Next DES解密

求一份DES解密的代码

Harmonyos Next教程
2 回复 
import { cryptoFramework } from '@kit.CryptoArchitectureKit';
import { buffer, util } from '@kit.ArkTS';

@Entry
@Component
struct TDes3Crypto {
  @State message: string = '点击开始';

  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
          .onClick(() => {
            DES3Crypto()
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}

// 加密消息
function encryptMessage(symKey: cryptoFramework.SymKey, plainText: cryptoFramework.DataBlob) {
  let cipher = cryptoFramework.createCipher('3DES192|CBC|PKCS5');
  let iv = genIvParamsSpec();
  cipher.initSync(cryptoFramework.CryptoMode.ENCRYPT_MODE, symKey, iv);
  let encryptData = cipher.doFinalSync(plainText);
  return encryptData;
}
// 解密消息
function decryptMessage(symKey: cryptoFramework.SymKey, cipherText: cryptoFramework.DataBlob) {
  let decoder = cryptoFramework.createCipher('3DES192|CBC|PKCS5');
  let iv = genIvParamsSpec();
  decoder.initSync(cryptoFramework.CryptoMode.DECRYPT_MODE, symKey, iv);
  let decryptData = decoder.doFinalSync(cipherText);
  return decryptData;
}
function genSymKeyByData(symKeyData: Uint8Array) {
  let symKeyBlob: cryptoFramework.DataBlob = { data: symKeyData };
  let symGenerator = cryptoFramework.createSymKeyGenerator('3DES192');
  let symKey = symGenerator.convertKeySync(symKeyBlob);
  console.info('convertKey success');
  return symKey;
}

function genIvParamsSpec() {
  let iv = new Int8Array([-45, -21, 108, 107, 31, 7, 62, 12, 51, -39, 87, 89, -18, 48, 3, 23]/*buffer.from('01234567', 'utf-8').buffer*/);
  console.error("AAAAAAIV"+iv)
  let dataIv = new Uint8Array(iv);

  let ivBlob: cryptoFramework.DataBlob = { data: dataIv };
  let ivParamsSpec: cryptoFramework.IvParamsSpec = {
    algName: "IvParamsSpec",
    iv: ivBlob
  };
  return ivParamsSpec;
}
function DES3Crypto() {
  let base64 = new util.Base64Helper()


  let key = "DDEFFeEFe.,;Efffsadefewq";
  let u8a = new Uint8Array(buffer.from(key, 'utf-8').buffer)
  let symKey = genSymKeyByData(u8a);

  let message = "123456";
  let plainText: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from(message, 'utf-8').buffer) };
  let encryptText = encryptMessage(symKey, plainText);
  let base64en = base64.encodeToStringSync(encryptText.data)
  console.info('decrypt ok      '+ base64en) ;

  let s = ""

  console.error("aaaaasssss"+base64.decodeSync(s))
  let encryptoMessage = base64.decodeSync(s);
  let encryptoMes: cryptoFramework.DataBlob = { data: new Uint8Array(encryptoMessage) };
  let decryptText = decryptMessage(symKey, encryptText );
  if (plainText.data.toString() === decryptText.data.toString()) {
    console.info('decrypt ok');
    console.info('decrypt plainText: ' + buffer.from(decryptText.data).toString('utf-8'));
  } else {
    console.error('decrypt failed');
  }
}

更多关于HarmonyOS 鸿蒙Next DES解密的实战系列教程也可以访问 https://www.itying.com/category-93-b0.html


在HarmonyOS（鸿蒙）系统中进行DES（Data Encryption Standard，数据加密标准）解密操作时，通常涉及使用系统提供的加密库或API来实现。以下是针对HarmonyOS环境进行DES解密的基本步骤和示例代码片段：

基本步骤

  1. 准备密钥和密文：确保你有正确的DES密钥和需要解密的密文数据。
  2. 配置解密参数：设置解密所需的参数，如模式（ECB、CBC等）和填充方式（PKCS5Padding等）。
  3. 调用解密API：使用HarmonyOS提供的加密库中的解密函数，传入密钥、密文和参数进行解密。
  4. 处理解密结果：获取解密后的明文数据，并进行必要的处理或验证。

示例代码片段（伪代码）

// 假设已包含必要的加密库头文件
#include <encryption_library.h>

// 密钥和密文（示例）
byte key[8] = {/* DES密钥 */};
byte ciphertext[/* 密文长度 */];

// 解密参数
DecryptParam param;
param.mode = DES_CBC_MODE;
param.padding = PKCS5_PADDING;

// 执行解密
byte plaintext[/* 解密后明文的最大长度 */];
int plaintext_len = DecryptDES(key, ciphertext, plaintext, param);

// 处理解密后的明文
// ...

注意：上述代码为伪代码，实际实现需根据HarmonyOS提供的加密API进行调整。如果问题依旧没法解决请联系官网客服,官网地址是：https://www.itying.com/category-93-b0.html

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