HarmonyOS 消息摘要计算（C++）示例中得到的md5码结果不对？

Question

https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/crypto-generate-message-digest-ndk-V5

参考以上文档中的消息摘要算法，一次性传入，得到的md5码结果有问题（把sha256改成md5），结果如下：

\xbe\xb0\xdb\xd1\xc6\xfa\xc1\U00000014\r\xd8\U00000017QO/\xbd\xf5\U00000001\xe2F\xbf\U00000016\xc8\xe8w\xe7\U00000011\x87\xe9\xeb\0\x81\x89

Answer 1

可参考：

static OH_Crypto_ErrCode doTestMd() {
  OH_Crypto_ErrCode ret;
  OH_CryptoDigest *ctx = nullptr;

  char *testData = const_cast<char *>("0123456789");
  Crypto_DataBlob in = {.data = (uint8_t *)(testData), .len = strlen(testData)};
  Crypto_DataBlob out = {.data = nullptr, .len = 0};

  int mdLen = 0;
  ret = OH_CryptoDigest_Create("MD5", &ctx);
  if (ret != CRYPTO_SUCCESS) {
    return ret;
  }
  do {
    ret = OH_CryptoDigest_Update(ctx, &in);
    if (ret != CRYPTO_SUCCESS) {
      break;
    }
    ret = OH_CryptoDigest_Final(ctx, &out);
    if (ret != CRYPTO_SUCCESS) {
      break;
    }
    mdLen = OH_CryptoDigest_GetLength(ctx);
    for (int i = 0; i < out.len; i++) {
      OH_LOG_INFO(LOG_APP, "0x%{public}02X", out.data[i]);
    }
  } while (0);
  OH_Crypto_FreeDataBlob(&out);
  OH_DigestCrypto_Destroy(ctx);
  return ret;
}