HarmonyOS OC 3DES解密转译ARKTS？

Question

resStr = [Hisun3DESForSDK TripleDES:dataStr andKey:keyStr encryptOrDecrypt:1];
+(NSString*)TripleDES:(NSString*)plainText andKey:(NSString *)key encryptOrDecrypt:(CCOperation)encryptOrDecrypt
{
  const void *vplainText;
  size_t plainTextBufferSize;

  if (encryptOrDecrypt == kCCDecrypt)//解密
  {
    /** GBK转码 */
    NSData *EncryptData = [GTMBase64ForSDK decodeData:[plainText dataUsingEncoding:CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000)]];
    NSLog(@"EncryptData=%@",EncryptData);
    plainTextBufferSize = [EncryptData length];
    NSLog(@"plainTextBufferSize=%zu",plainTextBufferSize);
    vplainText = [EncryptData bytes];

  }
  else //加密
  {
    NSData* data = [plainText dataUsingEncoding:CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000)];
    plainTextBufferSize = [data length];
    vplainText = (const void *)[data bytes];
  }
  CCCryptorStatus ccStatus;
  uint8_t *bufferPtr = NULL;
  size_t bufferPtrSize = 0;
  size_t movedBytes = 0;

  bufferPtrSize = (plainTextBufferSize + kCCBlockSize3DES) & ~(kCCBlockSize3DES - 1);
  bufferPtr = malloc( bufferPtrSize * sizeof(uint8_t));
  memset((void *)bufferPtr, 0x0, bufferPtrSize);

  const void *vkey = (const void *)[key UTF8String];
  ccStatus = CCCrypt(encryptOrDecrypt,
    kCCAlgorithm3DES,
    kCCOptionPKCS7Padding,
    vkey,
    kCCKeySize3DES,
    [[@"01234567" dataUsingEncoding:NSUTF8StringEncoding] bytes],
  vplainText,
  plainTextBufferSize,
  (void *)bufferPtr,
bufferPtrSize,
  &movedBytes);

  NSString *result;

  if (encryptOrDecrypt == kCCDecrypt)
  {
    //声明一个gbk编码类型
    NSStringEncoding gbkEncoding = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000);
    NSLog(@"gbkEncoding=%lu",(unsigned long)gbkEncoding);
    result = [[[NSString alloc] initWithData:[NSData dataWithBytes:(const void *)bufferPtr
    length:(NSUInteger)movedBytes]
    encoding:gbkEncoding]
    autorelease];
    NSLog(@"result=%@",result);
  }
  else
  {
    NSData *myData = [NSData dataWithBytes:(const void *)bufferPtr length:(NSUInteger)movedBytes];
    result = [GTMBase64ForSDK stringByEncodingData:myData];
  }
  return result;
}

Answer 1

参考示例如下：

import { cryptoFramework } from '@kit.CryptoArchitectureKit';
import { buffer } from '@kit.ArkTS';

@Entry
@Component
struct AESCBCCrypto {
  @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|ECB|PKCS7');
  cipher.initSync(cryptoFramework.CryptoMode.ENCRYPT_MODE, symKey, null);
  let encryptData = cipher.doFinalSync(plainText);
  return encryptData;
}

// 解密消息
function decryptMessage(symKey: cryptoFramework.SymKey, cipherText: cryptoFramework.DataBlob) {
  let decoder = cryptoFramework.createCipher('3DES192|ECB|PKCS7');
  decoder.initSync(cryptoFramework.CryptoMode.DECRYPT_MODE, symKey, null);
  let decryptData = decoder.doFinalSync(cipherText);
  return decryptData;
}

async function genSymKeyByData(symKeyData: Uint8Array) {
  let symKeyBlob: cryptoFramework.DataBlob = { data: symKeyData };
  let symGenerator = cryptoFramework.createSymKeyGenerator('3DES192');
  let symKey = await symGenerator.convertKey(symKeyBlob);
  console.info('convertKey success');
  return symKey;
}

async function DES3Crypto() {
  let keyData =
    new Uint8Array([238, 249, 61, 55, 128, 220, 183, 224, 139, 253, 248, 239, 239, 41, 71, 25, 235, 206, 230, 162, 249,
      27, 234, 114]);
  let symKey = await genSymKeyByData(keyData);
  let message = "This is a test";
  let plainText: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from(message, 'utf-8').buffer) };
  let encryptText = encryptMessage(symKey, plainText);
  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');
  }
}