> ## Documentation Index
> Fetch the complete documentation index at: https://injectivelabs-docs-ai-sdk.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# AuthZ

`authz` 模块是 Cosmos SDK 模块的实现，根据 ADR 30，允许从一个账户（授权者）向另一个账户（被授权者）授予任意权限。

## 消息

### MsgGrant

使用 MsgGrant 消息创建授权。如果 (granter, grantee, Authorization) 三元组已存在授权，则新授权将覆盖之前的授权。要更新或延长现有授权，应创建具有相同 (granter, grantee, Authorization) 三元组的新授权。

常用消息类型列表：

```
"/injective.exchange.v1beta1.MsgCreateSpotLimitOrder",
"/injective.exchange.v1beta1.MsgCreateSpotMarketOrder",
"/injective.exchange.v1beta1.MsgCancelSpotOrder",
"/injective.exchange.v1beta1.MsgBatchUpdateOrders",
"/injective.exchange.v1beta1.MsgBatchCancelSpotOrders",
"/injective.exchange.v1beta1.MsgDeposit",
"/injective.exchange.v1beta1.MsgWithdraw",
"/injective.exchange.v1beta1.MsgCreateDerivativeLimitOrder",
"/injective.exchange.v1beta1.MsgCreateDerivativeMarketOrder",
"/injective.exchange.v1beta1.MsgCancelDerivativeOrder",
"/injective.exchange.v1beta1.MsgBatchUpdateOrders",
"/injective.exchange.v1beta1.MsgBatchCancelDerivativeOrders",
"/injective.exchange.v1beta1.MsgDeposit",
"/injective.exchange.v1beta1.MsgWithdraw",
```

根据 [cosmos sdk 文档](https://docs.cosmos.network/main/modules/authz)，"授权必须针对特定的 Msg 服务方法逐一授予"，因此以下代码片段必须针对您希望 `grantee` 代表 `granter` 拥有授权的每种消息类型重复执行。

```ts theme={null}
import { Network } from "@injectivelabs/networks";
import { MsgGrant } from "@injectivelabs/sdk-ts/core/modules";
import { MsgBroadcasterWithPk } from "@injectivelabs/sdk-ts/core/tx";

const privateKeyOfGranter = "0x...";
const grantee = "inj...";
const granter = "inj...";
const messageType =
  "/injective.exchange.v1beta1.MsgCreateSpotLimitOrder"; /* 示例消息类型 */

const msg = MsgGrant.fromJSON({
  messageType,
  grantee,
  granter,
});

const txHash = await new MsgBroadcasterWithPk({
  privateKey: privateKeyOfGranter,
  network: Network.Testnet,
}).broadcast({
  msgs: msg,
});

console.log(txHash);
```

### MsgExec

当被授权者想要代表授权者执行交易时，必须发送 MsgExec。在此示例中，我们将执行 MsgSend 将资产从授权者的账户地址转移到另一个账户地址。

```ts theme={null}
import { Network } from "@injectivelabs/networks";
import { toChainFormat } from "@injectivelabs/utils";
import { MsgBroadcasterWithPk } from "@injectivelabs/sdk-ts/core/tx";
import { MsgExec, MsgSend } from "@injectivelabs/sdk-ts/core/modules";

const privateKeyOfGrantee = "0x...";
const grantee = "inj...";
const granter = "inj...";

const msgs = MsgSend.fromJSON({
  amount: {
    denom: "inj",
    amount: toChainFormat(0.01).toFixed(),
  },
  srcInjectiveAddress: granter,
  dstInjectiveAddress: "inj1...",
});

const msg = MsgExec.fromJSON({
  msgs,
  grantee,
});

const txHash = await new MsgBroadcasterWithPk({
  privateKey: privateKeyOfGrantee,
  network: Network.Testnet,
}).broadcast({
  msgs: msg,
});

console.log(txHash);
```

### MsgRevoke

可以使用 MsgRevoke 消息撤销授权。

```ts theme={null}
import { Network } from "@injectivelabs/networks";
import { MsgRevoke } from "@injectivelabs/sdk-ts/core/modules";
import { getEthereumAddress } from "@injectivelabs/sdk-ts/utils";
import { MsgBroadcasterWithPk } from "@injectivelabs/sdk-ts/core/tx";

const privateKeyOfGranter = "0x...";
const grantee = "inj...";
const granter = "inj...";
const messageType =
  "/injective.exchange.v1beta1.MsgCreateSpotLimitOrder"; /* 示例消息类型 */

const msg = MsgRevoke.fromJSON({
  messageType,
  grantee,
  granter,
});

const txHash = await new MsgBroadcasterWithPk({
  privateKey: privateKeyOfGranter,
  network: Network.Testnet,
}).broadcast({
  msgs: msg,
});

console.log(txHash);
```