> **Import SDK**
```typescript
// Use appropriate ways to importing the privacy-routing-sdk
import { Sdk } from "privacy-routing-sdk";
const { Sdk } = require("privacy-routing-sdk");
```
> **Initiate SDK**
```typescript
import { Sdk } from "privacy-routing-sdk";
const ENV_CONFIG = {
hostUrl: "findora RPC",
};
// Initiating the SDK configuration
await Sdk.init(ENV_CONFIG);
```
> **Forge Testnet Configuration**
{% code overflow="wrap" %}
```typescript
export const FINDORA_NETWORK = {
chainId: 2154,
chainName: 'Findora',
nativeCurrency: {
name: 'FRA',
symbol: 'FRA',
decimals: 18,
},
rpcUrls: ['https://prod-forge.prod.findora.org:8545'],
blockExplorerUrls: ['https://prod-forge-blockscout.prod.findora.org/'],
};
export const CONTRACTS_ADDRESS = {
simBridge: '0x893c29D3e6520466005C18683466136D73641201',
prismBridge: '0x899d4d8f441E5B59EB21ceb58fce723bb5A85C55',
};
```
{% endcode %}
### The APIs
Generate the temp wallets for intermediate accounts,
```typescript
// Wallets
const findoraWallets = await findora.keypair.getWallet();
const { walletStart, walletEnd, anonWallet } = findoraWallets;t
```
Using `Privacy-Routing-SDK` for a complete anonymous routing in 4 steps
* **(1) Send assets From `Findora EVM` to `Findora Native Chain`**
* Send **FRA** token to Findora Native Chain
```typescript
await evm.transfer.fraToBar({
bridgeAddress: simBridgeAddress, // bridge contract address
recipientAddress: walletStart.address, // wallet account address
amount: "100", // amount in String
});
```
* Send **FRC20** token to Findora Native Chain
/**
Parameters
bridgeAddress: simBridge contract address
tokenAddress: FRC20 token address
totalAmount: send amount
recipientAddress: wallet account address
*/
await evm.services.approveToken(tokenAddress, simBridgeAddress, tokenAmount);
return await evm.transfer.frc20ToBar({
bridgeAddress: simBridgeAddress,
walletStart.address,
tokenAddress, // 0x5b15Cdff7Fe65161C377eDeDc34A4E4E31ffb00B for zkUSDT on Forge testnet
"100", // amount in String
});
// wait till the txn in successful and the assets converted
// the first findora wallet should receive 3 utxo [asset, bar2abar_fee, bar2evm_fee]
const { error: waitEvmToNativeUtxoError } = await findora.services.waitUtxoEnough(walletStart.publickey, 3);
if (waitEvmToNativeUtxoError) throw waitEvmToNativeUtxoError;
* **(2) Convert assets from `BAR` to `ABAR` in Findora Native Chain (entering anonymous cycle)**
```typescript
import { findora } from "privacy-routing-sdk";
// Fetch the converted asset Sids
// Sids are the index IDs of the UTXO in FRA chain
const { response: sids } = await findora.apis.getOwnedSids(walletStart.publickey);
/**
Parameters
sids: consumable utxo sids
*/
const barToAbarResult = await findora.transfer.barToAbar(
walletWrap, // created earlier
sids
);
if (barToAbarResult.txnLog) throw new Error(`barToAbar Error: ${barToAbarResult.txnLog}`);
console.log('barToAbar txnHash: ', barToAbarResult.txnHash);
// wait for 30 seconds
```
* **(3) Convert assets from `ABAR` to `BAR` in Findora Native Chain (leaving anonymous cycle)**
```typescript
import { findora } from "privacy-routing-sdk";
// commitments are the anonymous version of a private UTXO
// you can spend commitments owned by your anonWallet
const commitments = barToAbarResult.commitments;
/**
Parameters
commitments: consumable Abar utxo sids
*/
findora.transferabarToBar(
walletWrap.anonWallet, // created earlier
walletWrap.walletEnd, // created earlier
commitments
);
```
* **(4) Withdraw assets from `Findora Native Chain` to `Findora EVM`**
* Withdraw **FRA** token to Findora EVM
```typescript
import { findora } from "privacy-routing-sdk";
await findora.transfer.barToEVM(
walletWrap.walletEnd, // created earlier
"100", // amount
recipientAddress, // recipient's EVM address
"",
"",
false
);
```
* Withdraw **FRC20** token to Findora EVM
import { findora, evm } from "privacy-routing-sdk";
const assetCode = await evm.services.getAssetCode(
prismBridgeAddress,
tokenAddress, // FRC20 token address, 0x5b15Cdff7Fe65161C377eDeDc34A4E4E31ffb00B for zkUSDT on Forge testnet
findoraNetworkRpcUrl // https://prod-forge.prod.findora.org:8545 for Forge testnet
);
await findora.transfer.barToEVM(
walletWrap.walletEnd,
"100", // amount
recipientAddress, // recipient's address
assetCode,
"",
false
);
### Boilerplate settings
```typescript
import { Sdk } from 'privacy-routing-sdk';
import Web3 from 'web3';
export const ENV_CONFIG = {
hostUrl: 'https://prod-forge.prod.findora.org',
feeServerUrl: 'https://forge.invisiblex.org/api/fee',
configServerUrl: 'https://columbus-config.s3.us-west-2.amazonaws.com/columbus_config_forge.json',
navticeExplorerUrl: 'https://forge.findorascan.io/',
};
export const FINDORA_EVM_CHAIN_ID = '2154';
Sdk.init({ ...ENV_CONFIG, web3: new Web3(Web3.givenProvider) });
```
