# OH_CryptoMac

> phone 20+ | 2in1 20+ | tablet 20+ | tv 20+ | wearable 20+

```c
typedef struct OH_CryptoMac OH_CryptoMac
```

## 概述

MAC结构体，表示MAC上下文。

**起始版本：** 20

**相关模块：** [CryptoMacApi](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-cryptomacapi)

**所在头文件：** [crypto_mac.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-crypto-mac-h)