> ## Documentation Index > Fetch the complete documentation index at: https://www.helius.dev/docs/llms.txt > Use this file to discover all available pages before exploring further. # Penarikan > Panduan untuk menarik aset SOL, SPL, atau Token 2022 dari saldo privat ke akun Solana publik dengan contoh kode lengkap. 1. Penarikan memindahkan token dari saldo privat ke saldo Solana publik. 2. Penarikan dikirim dalam satu transaksi Solana ke alamat dompet Solana. #### Penarikan: Bagian yang Privat | Bidang | Visibilitas | Alasan | | ---------------------------- | ----------- | ----------------------------------------------------------------- | | Dompet privat sumber | Publik | Dalam Ring rahasia, dompet privat sumber terlihat secara onchain. | | Aset | Publik | Aset terlihat secara onchain | | Jumlah | Publik | Jumlah yang ditarik terlihat secara onchain | | Dompet publik tujuan | Publik | Alamat dompet tujuan terlihat secara onchain | | Saldo publik yang dihasilkan | Publik | Saldo publik yang dihasilkan terlihat secara onchain | | Saldo privat yang tersisa | Privat | Saldo yang tersisa dienkripsi secara onchain | Ring tanpa izin bersifat rahasia, dengan jumlah dan aset yang dienkripsi. Ring khusus dapat dikonfigurasi sebagai rahasia atau anonim (pengirim, penerima, aset, dan jumlah dienkripsi). ## Cara Kerja Penarikan Penarikan bekerja serupa dengan transfer Solana publik: 1. Saldo SOL atau SPL milik pengguna dienkripsi secara onchain. 2. Pengguna mendekripsi status privat, dompet membuat penarikan, dan pemilik menandatanganinya. * Ambil status terenkripsi dengan metode RPC khusus. Hanya pengguna yang dapat mendekripsi saldo secara lokal. * Dompet menetapkan jumlah dan penerima, lalu meminta bukti ZK. Secara default, penyedia RPC menghasilkan bukti ZK dan mengembalikannya. 3. Runtime Solana memverifikasi tanda tangan dan memanggil Solana Privacy Program, yang memverifikasi bukti ZK tanpa mengungkapkan status terenkripsi. 4. Aplikasi melacak status melalui hash transaksi Solana. ```mermaid theme={"system"} %%{init: { 'theme': 'base', 'themeVariables': { 'lineColor': '#FF6B35', 'primaryTextColor': '#737373', 'primaryBorderColor': '#9CA3AF', 'actorBkg': '#FFFFFF', 'actorBorder': '#9CA3AF', 'actorTextColor': '#737373', 'signalColor': '#FF6B35', 'signalTextColor': '#737373', 'labelBoxBkgColor': '#FF6B351F', 'labelBoxBorderColor': '#FF6B35', 'noteBkgColor': '#F5F5F5', 'noteTextColor': '#737373', 'noteBorderColor': '#9CA3AF' } }}%% sequenceDiagram participant Wallet participant RPC as RPC Provider participant Solana Wallet->>RPC: Fetch encrypted state RPC-->>Wallet: Encrypted state Note over Wallet: Decrypt Note over Wallet: Set amount and recipient Wallet->>RPC: Request ZK proof Note over RPC: Generate ZK proof RPC-->>Wallet: ZK proof Note over Wallet: Build transaction, sign Wallet->>RPC: Submit Transaction RPC->>Solana: Forward transaction Note over Solana: Verify signatures Note over Solana: CPI Solana Privacy Program Note over Solana: Verify ZK proof RPC-->>Wallet: Transaction signature ``` 1. Saldo SOL atau SPL milik pengguna bersifat publik secara onchain. 2. Dompet membaca status publik, membuat transfer, dan pemilik menandatanganinya. 3. Runtime Solana memverifikasi tanda tangan dan memanggil System Program atau Token Program, yang memperbarui saldo publik. 4. Aplikasi melacak status melalui hash transaksi Solana. ```mermaid theme={"system"} %%{init: { 'theme': 'base', 'themeVariables': { 'lineColor': '#FF6B35', 'primaryTextColor': '#737373', 'primaryBorderColor': '#9CA3AF', 'actorBkg': '#FFFFFF', 'actorBorder': '#9CA3AF', 'actorTextColor': '#737373', 'signalColor': '#FF6B35', 'signalTextColor': '#737373', 'labelBoxBkgColor': '#FF6B351F', 'labelBoxBorderColor': '#FF6B35', 'noteBkgColor': '#F5F5F5', 'noteTextColor': '#737373', 'noteBorderColor': '#9CA3AF' } }}%% sequenceDiagram participant Wallet participant RPC participant Solana Wallet->>RPC: Get public balance RPC-->>Wallet: Public state Note over Wallet: Build transfer, owner signs Wallet->>RPC: sendTransaction RPC->>Solana: Forward transaction Note over Solana: Verify signatures Note over Solana: CPI System / Token Program Note over Solana: Update balance RPC-->>Wallet: Transaction signature ``` Ini adalah alur transaksi tingkat tinggi untuk Ring rahasia tanpa izin. Bandingkan dengan Ring khusus di [konsep](/docs/id/privacy/concepts#alur-transaksi-tingkat-tinggi). ## Mulai ### Prasyarat Contoh TypeScript memerlukan Node.js 24 atau versi yang lebih baru, pnpm 11.18.0, dan Solana CLI. ```bash theme={"system"} pnpm add 'git+ssh://git@github.com/helius-labs/zolana.git#v0.3.0-alpha&path:/sdk-libs/ts' @solana/kit@^8.3.0 ``` Sumber: [sdk-libs/ts](https://github.com/helius-labs/zolana/tree/v0.3.0-alpha/sdk-libs/ts) ```bash theme={"system"} pnpm install cp .env.example .env ``` Tambahkan [kunci API Helius](https://dashboard.helius.dev/): ```bash .env theme={"system"} API_KEY=YOUR_API_KEY ZOLANA_PAYER_KEYPAIR=~/.config/solana/id.json ``` ```ts theme={"system"} import { createZolanaClient } from "@heliuslabs/zolana"; const client = await createZolanaClient({ solanaRpcUrl: "https://devnet.helius-rpc.com/?api-key=YOUR_API_KEY", indexerUrl: "https://d2xah7tnhdhcom.cloudfront.net", proverUrl: "https://d21ni15goiip6l.cloudfront.net", }); ``` Contoh-contoh ini menggunakan dompet CLI Solana sebagai pembayar secara default. Pembayar harus memiliki SOL devnet. Lihat [Cara Mendapatkan SOL Devnet](/docs/id/rpc/devnet-sol). Di localnet, SDK memulai validator pengujian lokal (`:8899`), pengindeks Photon (`:8784`), dan prover (`:3001`), lalu klien terhubung secara otomatis tanpa memerlukan konfigurasi endpoint. ```bash theme={"system"} cargo install --git https://github.com/helius-labs/zolana --tag v0.3.0-alpha zolana-cli zolana dev start ``` ```ts theme={"system"} import { createZolanaClient } from "@heliuslabs/zolana"; const client = await createZolanaClient({}); ``` ### Tarik ke Saldo Publik ```typescript theme={"system"} import { appendTransactionMessageInstructions, assertIsTransactionWithBlockhashLifetime, createTransactionMessage, getSignatureFromTransaction, pipe, sendTransactionWithoutConfirmingFactory, setTransactionMessageConfig, setTransactionMessageFeePayerSigner, setTransactionMessageLifetimeUsingBlockhash, signTransactionMessageWithSigners, type Instruction, type Signature, type TransactionSigner, } from "@solana/kit"; import { createZolanaClient } from "@heliuslabs/zolana"; type Client = Awaited>; export interface ConfirmedTransaction { readonly signature: Signature; readonly slot: bigint; } export function sendAndConfirmFactory( client: Client, feePayer: TransactionSigner, ): (instructions: readonly Instruction[]) => Promise { const sendTransaction = sendTransactionWithoutConfirmingFactory({ rpc: client.solanaRpc, }); return async function sendAndConfirm( instructions: readonly Instruction[], ): Promise { const { value: lifetime } = await client.solanaRpc .getLatestBlockhash() .send(); const signed = await signTransactionMessageWithSigners( pipe( createTransactionMessage({ version: 1 }), (message) => setTransactionMessageFeePayerSigner(feePayer, message), (message) => setTransactionMessageLifetimeUsingBlockhash(lifetime, message), (message) => setTransactionMessageConfig( { computeUnitLimit: 450_000, loadedAccountsDataSizeLimit: 64 * 1024 * 1024, }, message, ), (message) => appendTransactionMessageInstructions(instructions, message), ), ); assertIsTransactionWithBlockhashLifetime(signed); await sendTransaction(signed, { commitment: "confirmed" }); const signature = getSignatureFromTransaction(signed); const slot = await client.confirmTransaction(signature); return { signature, slot }; }; } ``` * SDK mengembalikan instruksi. Aplikasi menandatangani dan mengirimkannya. * `sendAndConfirmFactory` membuat transaksi Kit, mengirimkannya, serta mengembalikan tanda tangan dan slot tempat transaksi berhasil masuk. ```typescript theme={"system"} import { LocalKeys } from "@heliuslabs/zolana/client"; import { SOL_MINT } from "@heliuslabs/zolana"; import { transactInstruction, TransactWithdrawal, } from "@heliuslabs/zolana/interface"; import { ConfidentialTransfer, ProofInputUtxo, WithdrawalTarget, } from "@heliuslabs/zolana/transaction"; const withdrawalUtxo = transferBalance.utxos[0]!; const withdrawalInput = ProofInputUtxo.fromKeypair( withdrawalUtxo, sender, ); const withdrawal = new ConfidentialTransfer( senderAddress, [withdrawalInput], senderSigner.address, ); withdrawal.withdraw( SOL_MINT, WITHDRAW_AMOUNT, WithdrawalTarget.sol({ recipient: senderSigner.address, }), ); const withdrawalProofInputs = withdrawal.sign( sender, assets, ); const senderKeys = LocalKeys.fromKeypair(sender, client.proofService); const withdrawalData = await client.proveTransact( withdrawalProofInputs, senderKeys, ); const withdrawalInstruction = await transactInstruction({ payer: senderSigner, inputTree: client.tree, outputTree: client.tree, withdrawal: TransactWithdrawal.sol({ recipient: senderSigner.address, }), data: withdrawalData, }); const withdrawalTx = await sendAndConfirm([ withdrawalInstruction, ]); ``` ```typescript theme={"system"} import { LocalKeys } from "@heliuslabs/zolana/client"; import { transactInstruction, TransactWithdrawal, } from "@heliuslabs/zolana/interface"; import { ConfidentialTransfer, ProofInputUtxo, WithdrawalTarget, } from "@heliuslabs/zolana/transaction"; const withdrawalUtxo = transferBalance.utxos[0]!; const withdrawalInput = ProofInputUtxo.fromKeypair( withdrawalUtxo, sender, ); const withdrawal = new ConfidentialTransfer( senderAddress, [withdrawalInput], senderSigner.address, ); withdrawal.withdraw( spl.mint, WITHDRAW_AMOUNT, WithdrawalTarget.spl({ recipientTokenAccount: spl.userTokenAccount, splTokenInterface: spl.splTokenInterface, splInterfaceBump: spl.splInterfaceBump, }), ); const withdrawalProofInputs = withdrawal.sign( sender, assets, ); const senderKeys = LocalKeys.fromKeypair(sender, client.proofService); const withdrawalData = await client.proveTransact( withdrawalProofInputs, senderKeys, ); const withdrawalInstruction = await transactInstruction({ payer: senderSigner, inputTree: client.tree, outputTree: client.tree, withdrawal: TransactWithdrawal.spl({ mint: spl.mint, splTokenInterface: spl.splTokenInterface, recipientTokenAccount: spl.userTokenAccount, tokenProgram: spl.tokenProgram, }), data: withdrawalData, }); const withdrawalTx = await sendAndConfirm([ withdrawalInstruction, ]); ``` ```typescript theme={"system"} import { SOL_MINT } from "@heliuslabs/zolana"; const withdrawalUtxo = transferBalance.utxos[0]!; ``` * Contoh ini membelanjakan Private Solana Token Account yang tersisa setelah transfer sebelumnya. Penarikan dapat membelanjakan beberapa UTXO. * `withdrawalUtxo` memilih satu Private Solana Token Account dari saldo tersebut. ```typescript theme={"system"} import { ProofInputUtxo } from "@heliuslabs/zolana/transaction"; const withdrawalInput = ProofInputUtxo.fromKeypair( withdrawalUtxo, sender, ); ``` * `ProofInputUtxo.fromKeypair` menyiapkan UTXO yang dipilih sebagai input bukti dengan pasangan kunci dompet privat milik pengirim. * Pasangan kunci tersebut memperoleh nullifier yang menandai UTXO input sebagai telah dibelanjakan, sementara aset dan jumlah input tetap terenkripsi. ```typescript theme={"system"} import { SOL_MINT } from "@heliuslabs/zolana"; import { ConfidentialTransfer, WithdrawalTarget, } from "@heliuslabs/zolana/transaction"; const withdrawal = new ConfidentialTransfer( senderAddress, [withdrawalInput], senderSigner.address, ); withdrawal.withdraw( SOL_MINT, WITHDRAW_AMOUNT, WithdrawalTarget.sol({ recipient: senderSigner.address, }), ); const withdrawalProofInputs = withdrawal.sign( sender, assets, ); ``` * `senderAddress` adalah Shielded Address milik pengirim. Penarikan membelanjakan saldo dari dompet ini. * `[withdrawalInput]` mencantumkan UTXO pilihan pengirim. Penarikan dapat membelanjakan beberapa UTXO. * `senderSigner.address` adalah alamat Solana milik pembayar biaya. Sponsor gas dapat membayar biaya tersebut. * `WithdrawalTarget.sol` adalah penerima Solana publik. Penerima dapat berupa pemilik atau pihak ketiga. * `SOL_MINT` memilih SOL. Penarikan SPL atau Token 2022 meneruskan mint token. * `WITHDRAW_AMOUNT` dinyatakan dalam unit dasar aset. SOL menggunakan lamport. Aset SPL dan Token 2022 menggunakan unit dasar token. * `withdrawal.sign` mengotorisasi transisi status, mengenkripsi kembalian privat yang tersisa, dan menghasilkan input untuk pembukti zero-knowledge. * `assets` adalah registri aset yang digunakan untuk menemukan aset privat yang didukung. ```typescript theme={"system"} import { LocalKeys } from "@heliuslabs/zolana/client"; const senderKeys = LocalKeys.fromKeypair(sender, client.proofService); const withdrawalData = await client.proveTransact( withdrawalProofInputs, senderKeys, ); ``` * `senderKeys` menggunakan `LocalKeys.fromKeypair(sender, client.proofService)` untuk mengotorisasi pembuatan bukti dengan kunci pengirim. * `client.proveTransact` menghasilkan bukti zero-knowledge dari penarikan yang ditandatangani dan mengembalikan data instruksi yang diserialisasi. * Bukti tersebut menunjukkan bahwa pengirim memiliki dan dapat membelanjakan input. Aset dan jumlah yang ditarik bersifat publik. Jumlah input dan kembalian tetap terenkripsi. ```typescript theme={"system"} import { transactInstruction, TransactWithdrawal, } from "@heliuslabs/zolana/interface"; const withdrawalInstruction = await transactInstruction({ payer: senderSigner, inputTree: client.tree, outputTree: client.tree, withdrawal: TransactWithdrawal.sol({ recipient: senderSigner.address, }), data: withdrawalData, }); ``` * `payer` menandatangani dan membayar transaksi Solana. Sponsor gas dapat membayar biaya tersebut. * `inputTree` dan `outputTree` adalah `client.tree`, pohon Merkle status yang berisi UTXO yang telah dibelanjakan dan menerima kembalian privat milik pengirim. * `withdrawal` adalah `TransactWithdrawal.sol`, akun penerima Solana publik. * `await transactInstruction` memperoleh alamat akun nullifier secara lokal dan mengembalikan instruksi. Akun nullifier menandai UTXO input sebagai telah dibelanjakan agar saldo privat tidak dapat dibelanjakan dua kali. * `data` berisi bukti zero-knowledge dan kembalian terenkripsi yang dihasilkan pada langkah sebelumnya. * Penarikan memindahkan aset dari saldo privat ke akun Solana publik. Penarikan tersebut meneruskan akun penerima publik. ```typescript theme={"system"} import { sendAndConfirmFactory } from "../src/lib.js"; const withdrawalTx = await sendAndConfirm([ withdrawalInstruction, ]); ``` * `sendAndConfirm` menandatangani dan mengirimkan `withdrawalInstruction` sebagai transaksi Solana. * Konfirmasi menghasilkan slot tempat transaksi berhasil masuk, yang digunakan untuk membatasi pengambilan data oleh pengindeks. ### Contoh Kode Lengkap Kloning dan jalankan contoh: ```bash theme={"system"} git clone https://github.com/helius-labs/zolana-examples.git cd zolana-examples git checkout v0.3.0-alpha cd typescript-client pnpm install pnpm example examples/deposit_transfer_withdraw.ts ``` Contoh tersebut menggunakan Ring rahasia pada local/devnet [di sini](https://github.com/helius-labs/zolana-examples/blob/v0.3.0-alpha/typescript-client/examples/deposit_transfer_withdraw.ts). ```typescript deposit_transfer_withdraw.ts expandable theme={"system"} import { SOL_MINT, ShieldedKeypair, createZolanaClient, } from "@heliuslabs/zolana"; import { LocalKeys, atSlot, } from "@heliuslabs/zolana/client"; import { depositInstruction, transactInstruction, DepositAsset, TransactWithdrawal, } from "@heliuslabs/zolana/interface"; import { AssetRegistry, ConfidentialTransfer, ProofInputUtxo, decryptToBalances, WithdrawalTarget, } from "@heliuslabs/zolana/transaction"; import { cliKeypair, sendAndConfirmFactory, setup, } from "../src/lib.js"; const DEPOSIT_AMOUNT = 10_000_000n; const TRANSFER_AMOUNT = 3_000_000n; const WITHDRAW_AMOUNT = 3_000_000n; async function main(): Promise { const { clientConfig } = await setup(); // Connect to Helius devnet RPC plus the Photon indexer and prover. const client = await createZolanaClient(clientConfig); // Initialize the sender's private wallet and local authority // to decrypt transactions and sync balances. // The Solana signer and private wallet are derived from the same Ed25519 seed. const sender = ShieldedKeypair.fromKeypair( await cliKeypair(), ); const recipient = ShieldedKeypair.generate(); const senderSigner = sender.toSolanaSigner(); const senderAddress = sender.shieldedAddress(); const senderKeys = LocalKeys.fromKeypair( sender, client.proofService, ); // The SDK hands back instructions; the app owns signing and sending. const sendAndConfirm = sendAndConfirmFactory( client, senderSigner, ); // Mints that are registered with Solana Rings for privacy. const assets = new AssetRegistry(); // Deposit SOL into the sender's private balance. // A deposit from a public balance reveals // sender, recipient, asset and amount. // Alternatively, you can onramp fiat directly to a private balance. // 1. Move public SOL into the sender's private balance. // The view tag is the sender's Solana public key in confidential rings. // Used by the indexer to fetch the sender's UTXOs. const senderViewTag = senderAddress.confidentialViewTag(); const depositIx = await depositInstruction({ tree: client.tree, depositor: senderSigner, deposits: [ { asset: DepositAsset.sol(), viewTag: senderViewTag, recipientOwnerHash: senderAddress.ownerHash(), amount: DEPOSIT_AMOUNT, }, ], }); // 2. Send and confirm like any Solana transaction; confirmation yields the landed slot. const depositTx = await sendAndConfirm([ depositIx, ]); // 3. Fetch transaction outputs from the indexer, gated on the deposit's slot. // The indexer returns encrypted outputs by transaction signature. const depositResponse = await client.getShieldedTransactionsBySignature( depositTx.signature, atSlot(depositTx.slot), ); // 4. The sender decrypts the transaction outputs locally to read the private balance. const balancesAfterDeposit = await decryptToBalances({ keypair: sender, registry: assets, transactions: depositResponse.transactions.map( ({ transaction }) => transaction, ), }); const depositBalance = balancesAfterDeposit.balance(SOL_MINT); if (depositBalance.amount !== DEPOSIT_AMOUNT) { throw new Error( `expected deposit amount ${DEPOSIT_AMOUNT}, got ${depositBalance.amount}`, ); } if (depositBalance.utxos.length !== 1) { throw new Error( `expected 1 deposit utxo, got ${depositBalance.utxos.length}`, ); } // Confidential SOL transfer to the recipient's private balance. // A confidential transfer reveals only sender and recipient, // not the asset or amount. // 1. Select private token accounts (UTXOs) that make up the private balance for the transfer. const transferUtxo = depositBalance.utxos[0]!; // 2. Prepare the selected UTXOs as inputs for the zero-knowledge proof. const transferInput = ProofInputUtxo.fromKeypair( transferUtxo, sender, ); // 3. Build and sign the confidential transfer. // Signing encrypts the asset and amount and produces the proof inputs for the ZK prover. const transfer = new ConfidentialTransfer( senderAddress, [transferInput], senderSigner.address, ); transfer.send( recipient.shieldedAddress(), SOL_MINT, TRANSFER_AMOUNT, ); const transferProofInputs = transfer.sign( sender, assets, ); // 4. Fetch the ZK proof to prove the sender can spend the balance without revealing asset and amount. const transferData = await client.proveTransact( transferProofInputs, senderKeys, ); // 5. Build the instruction with the state Merkle tree and Solana accounts required for the transfer. // Private transfers move balances only between private token accounts, not public token accounts. const transferInstruction = await transactInstruction({ payer: senderSigner, inputTree: client.tree, outputTree: client.tree, data: transferData, }); // 6. Send and confirm like any Solana transaction; confirmation yields the landed slot. const transferTx = await sendAndConfirm([ transferInstruction, ]); // 7. Fetch the sender's UTXOs from this transaction, gated on the transfer's slot, // and read the remaining private balance. const transferResponse = await client.getShieldedTransactionsBySignature( transferTx.signature, atSlot(transferTx.slot), ); const balancesAfterTransfer = await decryptToBalances({ keypair: sender, registry: assets, transactions: transferResponse.transactions.map( ({ transaction }) => transaction, ), }); const transferBalance = balancesAfterTransfer.balance(SOL_MINT); if ( transferBalance.amount !== DEPOSIT_AMOUNT - TRANSFER_AMOUNT ) { throw new Error( `expected remaining amount from this run ${DEPOSIT_AMOUNT - TRANSFER_AMOUNT}, got ${transferBalance.amount}`, ); } if (transferBalance.utxos.length !== 1) { throw new Error( `expected 1 transfer utxo, got ${transferBalance.utxos.length}`, ); } // Withdraw SOL from the sender's private balance to their public balance. // A withdrawal reveals the sender, recipient, asset, and amount. // 1. Select private token accounts (UTXOs) that make up the private balance for the withdrawal. const withdrawalUtxo = transferBalance.utxos[0]!; // 2. Prepare the selected UTXOs as inputs for the zero-knowledge proof. const withdrawalInput = ProofInputUtxo.fromKeypair( withdrawalUtxo, sender, ); // 3. Build and sign the private-to-public withdrawal. // Signing encrypts the asset and amount of the remaining private balance // and produces the proof inputs for the ZK prover. const withdrawal = new ConfidentialTransfer( senderAddress, [withdrawalInput], senderSigner.address, ); withdrawal.withdraw( SOL_MINT, WITHDRAW_AMOUNT, WithdrawalTarget.sol({ recipient: senderSigner.address, }), ); const withdrawalProofInputs = withdrawal.sign( sender, assets, ); // 4. Fetch the ZK proof to prove the sender can spend the balance. const withdrawalData = await client.proveTransact( withdrawalProofInputs, senderKeys, ); // 5. Build the instruction with the state Merkle tree and Solana accounts required for the withdrawal. const withdrawalInstruction = await transactInstruction({ payer: senderSigner, inputTree: client.tree, outputTree: client.tree, withdrawal: TransactWithdrawal.sol({ recipient: senderSigner.address, }), data: withdrawalData, }); // 6. Send and confirm like any Solana transaction; confirmation yields the landed slot. const withdrawalTx = await sendAndConfirm([ withdrawalInstruction, ]); // 7. Fetch the sender's UTXOs from this transaction, gated on the withdrawal's slot, // and read the remaining private balance. const withdrawalResponse = await client.getShieldedTransactionsBySignature( withdrawalTx.signature, atSlot(withdrawalTx.slot), ); const balancesAfterWithdrawal = await decryptToBalances({ keypair: sender, registry: assets, transactions: withdrawalResponse.transactions.map( ({ transaction }) => transaction, ), }); const withdrawalBalance = balancesAfterWithdrawal.balance(SOL_MINT); if ( withdrawalBalance.amount !== DEPOSIT_AMOUNT - TRANSFER_AMOUNT - WITHDRAW_AMOUNT ) { throw new Error( `expected remaining amount from this run ${DEPOSIT_AMOUNT - TRANSFER_AMOUNT - WITHDRAW_AMOUNT}, got ${withdrawalBalance.amount}`, ); } if (withdrawalBalance.utxos.length !== 1) { throw new Error( `expected 1 withdrawal utxo, got ${withdrawalBalance.utxos.length}`, ); } // 8. Read remaining private balance and the public balance. const solanaBalance = await client.getBalance( senderSigner.address, ); console.log( `withdraw private_balance=${withdrawalBalance.amount} ` + `solana_balance=${solanaBalance} tx=${withdrawalTx.signature}`, ); } await main(); ``` ### Prasyarat Contoh Rust memerlukan Rust 1.98.1 dan Solana CLI v4.0.2. Lihat [panduan instalasi Solana](https://solana.com/docs/intro/installation). ```toml Cargo.toml theme={"system"} [dependencies] zolana-client = { git = "https://github.com/helius-labs/zolana", tag = "v0.3.0-alpha", features = ["indexer-api", "solana-rpc"] } zolana-interface = { git = "https://github.com/helius-labs/zolana", tag = "v0.3.0-alpha" } zolana-program = { git = "https://github.com/helius-labs/zolana", tag = "v0.3.0-alpha" } zolana-keypair = { git = "https://github.com/helius-labs/zolana", tag = "v0.3.0-alpha" } zolana-transaction = { git = "https://github.com/helius-labs/zolana", tag = "v0.3.0-alpha" } zolana-wallet = { git = "https://github.com/helius-labs/zolana", tag = "v0.3.0-alpha" } ``` Sumber: [sdk-libs/client](https://github.com/helius-labs/zolana/tree/v0.3.0-alpha/sdk-libs/client) Tambahkan [kunci API Helius](https://dashboard.helius.dev/): ```bash .env theme={"system"} API_KEY=YOUR_API_KEY ZOLANA_PAYER_KEYPAIR=~/.config/solana/id.json ``` ```rust theme={"system"} use zolana_client::{SolanaRpc, ZolanaClient}; use zolana_interface::pda; let tree = pda::tree(0); let client = ZolanaClient::from_urls( SolanaRpc::new("https://devnet.helius-rpc.com/?api-key=YOUR_API_KEY"), "https://d2xah7tnhdhcom.cloudfront.net", "https://d21ni15goiip6l.cloudfront.net", )?; ``` Contoh-contoh ini menggunakan dompet Solana CLI sebagai pembayar secara default. Pembayar harus memiliki SOL devnet. Lihat [Cara Mendapatkan SOL Devnet](/docs/id/rpc/devnet-sol). ```bash theme={"system"} cargo install --git https://github.com/helius-labs/zolana --tag v0.3.0-alpha zolana-cli zolana dev start ``` ```rust theme={"system"} use zolana_client::{SolanaRpc, ZolanaClient}; use zolana_interface::pda; let tree = pda::tree(0); let client = ZolanaClient::from_urls( SolanaRpc::new("http://127.0.0.1:8899"), "http://127.0.0.1:8784", "http://127.0.0.1:3001", )?; ``` ### Tarik ke Saldo Publik ```rust theme={"system"} use zolana_program::instruction::{ Transact, TransactInterfaceTransferAccounts, TransactSolTransferAccounts, }; use zolana_transaction::{instructions::transact::ConfidentialTransaction, SOL_MINT}; let withdrawal_utxo = sender_balances_after_transfer .get_balance(SOL_MINT) // SPL: .get_balance(spl.mint) .and_then(|balance| balance.utxos.first()) .expect("failed to fetch sender's utxo") .clone(); let mut withdrawal = ConfidentialTransaction::new(vec![withdrawal_utxo], sender.pubkey())?; withdrawal.withdraw_sol(WITHDRAW_AMOUNT, sender.pubkey())?; // SPL: withdrawal.withdraw(spl.mint, WITHDRAW_AMOUNT, spl.user_token_account)?; let proof_inputs = withdrawal.encrypt(&sender)?; let withdrawal_data = client.prove_transact(proof_inputs, None, &sender)?; let withdraw_ix = Transact { payer: sender.pubkey(), input_trees: vec![tree], output_tree: tree, owner_signers: Vec::new(), interface_transfer_accounts: vec![TransactInterfaceTransferAccounts::Sol( TransactSolTransferAccounts { recipient: sender.pubkey(), }, )], // SPL: interface_transfer_accounts: vec![ // SPL: TransactInterfaceTransferAccounts::SplWithdrawal( // SPL: zolana_program::instruction::TransactSplWithdrawalAccounts { // SPL: mint: spl.mint, // SPL: spl_interface: spl.vault, // SPL: user_token_account: spl.user_token_account, // SPL: token_program: spl.token_program, // SPL: }, // SPL: ), // SPL: ], data: withdrawal_data, } .instruction(); ``` ```rust theme={"system"} use zolana_transaction::SOL_MINT; let withdrawal_utxo = sender_balances_after_transfer .get_balance(SOL_MINT) // SPL: .get_balance(spl.mint) .and_then(|balance| balance.utxos.first()) .expect("failed to fetch sender's utxo") .clone(); ``` * Contoh ini membelanjakan Private Solana Token Account yang tersisa setelah transfer sebelumnya. Penarikan dapat membelanjakan beberapa UTXO. * `withdrawal_utxo` adalah UTXO pertama yang dapat dibelanjakan untuk aset tersebut. Komentar `// SPL:` menampilkan `get_balance(spl.mint)`. ```rust theme={"system"} use zolana_transaction::instructions::transact::ConfidentialTransaction; let mut withdrawal = ConfidentialTransaction::new(vec![withdrawal_utxo], sender.pubkey())?; ``` * `ConfidentialTransaction::new` menerima UTXO yang dipilih secara langsung. * `vec![withdrawal_utxo]` mencantumkan input. `sender.pubkey()` adalah pembayar biaya transaksi. ```rust theme={"system"} use solana_signer::Signer; withdrawal.withdraw_sol(WITHDRAW_AMOUNT, sender.pubkey())?; // SPL: withdrawal.withdraw(spl.mint, WITHDRAW_AMOUNT, spl.user_token_account)?; let proof_inputs = withdrawal.encrypt(&sender)?; ``` * `sender.pubkey()` adalah penerima SOL publik. Penerima dapat berupa pemilik atau pihak ketiga. Untuk SPL dan Token 2022, teruskan akun token penerima ke `withdraw`. * `withdrawal.withdraw_sol` memilih SOL. Komentar `// SPL:` menampilkan mint token untuk aset SPL dan Token 2022. * `WITHDRAW_AMOUNT` dinyatakan dalam unit dasar aset. SOL menggunakan lamport. Aset SPL dan Token 2022 menggunakan unit dasar token. * `withdrawal.encrypt(&sender)` mengenkripsi output dan menghasilkan input untuk pembukti zero-knowledge. ```rust theme={"system"} use zolana_client::Rpc; let withdrawal_data = client.prove_transact(proof_inputs, None, &sender)?; ``` * `client.prove_transact` menghasilkan bukti zero-knowledge dari penarikan terenkripsi dan mengembalikan data instruksi yang diserialisasi. * `sender` menyediakan kunci yang digunakan untuk mengotorisasi bukti. UTXO input mengidentifikasi pohon statusnya. * Bukti tersebut menunjukkan bahwa pengirim memiliki dan dapat membelanjakan input. Aset dan jumlah yang ditarik bersifat publik. Jumlah input dan kembalian tetap terenkripsi. ```rust theme={"system"} use zolana_program::instruction::{ Transact, TransactInterfaceTransferAccounts, TransactSolTransferAccounts, }; let withdraw_ix = Transact { payer: sender.pubkey(), input_trees: vec![tree], output_tree: tree, owner_signers: Vec::new(), interface_transfer_accounts: vec![TransactInterfaceTransferAccounts::Sol( TransactSolTransferAccounts { recipient: sender.pubkey(), }, )], // SPL: interface_transfer_accounts: vec![ // SPL: TransactInterfaceTransferAccounts::SplWithdrawal( // SPL: zolana_program::instruction::TransactSplWithdrawalAccounts { // SPL: mint: spl.mint, // SPL: spl_interface: spl.vault, // SPL: user_token_account: spl.user_token_account, // SPL: token_program: spl.token_program, // SPL: }, // SPL: ), // SPL: ], data: withdrawal_data, } .instruction(); ``` * `payer` menandatangani dan membayar transaksi Solana. Sponsor gas dapat membayar biaya tersebut. * `input_trees` mengidentifikasi pohon Merkle status yang berisi UTXO yang telah dibelanjakan. * `output_tree` mengidentifikasi pohon Merkle status yang menerima komitmen untuk kembalian privat milik pengirim. * `interface_transfer_accounts` menyediakan `TransactInterfaceTransferAccounts::Sol`, penerima Solana publik. Komentar `// SPL:` menampilkan `SplWithdrawal`. * `owner_signers` kosong untuk penarikan rahasia ini. * `data` berisi bukti zero-knowledge dan kembalian terenkripsi yang dihasilkan pada langkah sebelumnya. ```rust theme={"system"} use zolana_client::Rpc; let signature = client.create_and_send_transaction( &[withdraw_ix], sender.pubkey(), &[&sender], client.compute_budget(), )?; let slot = landed_slot(&client, signature)?; ``` * `create_and_send_transaction` menandatangani dan mengirimkan `withdraw_ix` sebagai transaksi Solana. * `landed_slot` membaca slot konfirmasi yang digunakan untuk membatasi pengambilan data oleh pengindeks. * `sender` membayar biaya dan mengotorisasi penarikan. ### Contoh Kode Lengkap Kloning dan jalankan contoh: ```bash theme={"system"} git clone https://github.com/helius-labs/zolana-examples.git cd zolana-examples git checkout v0.3.0-alpha cd rust-client cargo run -p rust-client-example --example deposit_transfer_withdraw ``` Contoh tersebut menggunakan Ring rahasia pada local/devnet [di sini](https://github.com/helius-labs/zolana-examples/blob/v0.3.0-alpha/rust-client/examples/deposit_transfer_withdraw.rs). ```rust deposit_transfer_withdraw.rs expandable theme={"system"} use anyhow::{anyhow, Result}; use rust_client_example::{cli_keypair, landed_slot, setup, SetupContext}; use solana_keypair::Keypair; use solana_signer::Signer; use zolana_client::{IndexerRpcConfig, Rpc, SolanaRpc, ZolanaClient}; use zolana_keypair::ShieldedKeypair; use zolana_program::instruction::{ AssetDeposit, Deposit, DepositAsset, Transact, TransactInterfaceTransferAccounts, TransactSolTransferAccounts, }; use zolana_transaction::{ decrypt_spendable, instructions::transact::ConfidentialTransaction, AssetRegistry, SOL_MINT, }; const DEPOSIT_AMOUNT: u64 = 10_000_000; const TRANSFER_AMOUNT: u64 = 3_000_000; const WITHDRAW_AMOUNT: u64 = 3_000_000; fn main() -> Result<()> { let SetupContext { rpc_url, indexer_url, prover_url, tree, } = setup()?; // Connect to the RPC, indexer, and prover. let client = ZolanaClient::from_urls(SolanaRpc::new(rpc_url), &indexer_url, prover_url)?; // Mints that are registered with Solana Rings for privacy. let assets = AssetRegistry::default(); // SPL: assets.insert(spl.asset_id, spl.mint)?; // Initialize the sender's private wallet and local authority // to decrypt transactions and sync balances. // The Solana signer and private wallet are derived from the same Ed25519 seed. let sender = ShieldedKeypair::from_keypair(&cli_keypair()?)?; let recipient = ShieldedKeypair::from_keypair(&Keypair::new())?; let sender_shielded_address = sender.shielded_address()?; // Deposit SOL into the sender's private balance. // A deposit from a public balance reveals // sender, recipient, asset and amount. // Alternatively, you can onramp fiat directly to a private balance. // 1. Move public SOL into the sender's private balance. let sender_balances_after_deposit = { let deposit_ix = Deposit { tree, depositor: sender.pubkey(), deposits: vec![AssetDeposit { asset: DepositAsset::Sol, // SPL: asset: DepositAsset::Spl(zolana_program::instruction::DepositSplAccounts { // SPL: mint: spl.mint, // SPL: user_token: spl.user_token_account, // SPL: token_program: spl.token_program, // SPL: }), view_tag: sender_shielded_address.confidential_view_tag()?, owner: sender_shielded_address.owner_hash()?, amount: DEPOSIT_AMOUNT, memo: None, }], } .instruction()?; // 2. Send and confirm like any Solana transaction; the landed slot gates // the indexer fetch below. let signature = client.create_and_send_transaction( &[deposit_ix], sender.pubkey(), &[&sender], client.compute_budget(), )?; let slot = landed_slot(&client, signature)?; // 3. Fetch transaction outputs from the indexer, gated on the deposit's slot. // The indexer returns encrypted outputs by transaction signature. let response = client.get_shielded_transactions_by_signature( signature, Some(IndexerRpcConfig::at_slot(slot)), )?; let transactions = response .transactions .into_iter() .map(|indexed| indexed.transaction) .collect::>(); // 4. The sender decrypts the transaction outputs locally to update the private balance. let balances = decrypt_spendable(&sender, &transactions, &assets) .map_err(|e| anyhow!("decrypt sender transactions: {e:?}"))? .balances; let sender_balance = balances .get_balance(SOL_MINT) // SPL: .get_balance(spl.mint) .expect("failed to fetch sender's utxo"); assert_eq!(sender_balance.amount, DEPOSIT_AMOUNT); assert_eq!(sender_balance.utxos.len(), 1); balances }; // Confidential SOL transfer to the recipient's private balance. // A confidential transfer reveals only sender and recipient, // not the asset or amount. let sender_balances_after_transfer = { // 1. Select UTXOs that make up the private balance for the transfer. let transfer_utxo = sender_balances_after_deposit .get_balance(SOL_MINT) // SPL: .get_balance(spl.mint) .and_then(|balance| balance.utxos.first()) .expect("failed to fetch deposited utxo") .clone(); // 2. Prepare the selected UTXOs as inputs for the zero-knowledge proof. let mut transfer = ConfidentialTransaction::new(vec![transfer_utxo], sender.pubkey())?; // 3. Build and encrypt the confidential transfer. // Encryption hides the asset and amount and produces the proof inputs for the ZK prover. transfer.transfer_sol(&recipient.shielded_address()?, TRANSFER_AMOUNT)?; // SPL: transfer.transfer(&recipient.shielded_address()?, spl.mint, TRANSFER_AMOUNT)?; let proof_inputs = transfer.encrypt(&sender)?; // 4. Fetch the zk proof to prove the sender can spend the balance without revealing asset and amount. let transfer_data = client.prove_transact(proof_inputs, None, &sender)?; // 5. Construct the instruction. let transfer_ix = Transact { payer: sender.pubkey(), input_trees: vec![tree], output_tree: tree, owner_signers: Vec::new(), interface_transfer_accounts: Vec::new(), data: transfer_data, } .instruction(); // 6. Send and confirm like any Solana transaction; confirmation yields the landed slot. let signature = client.create_and_send_transaction( &[transfer_ix], sender.pubkey(), &[&sender], client.compute_budget(), )?; let slot = landed_slot(&client, signature)?; // 7. Fetch the sender's UTXOs from this transaction, gated on the transfer's slot, // and read the remaining private balance. let response = client.get_shielded_transactions_by_signature( signature, Some(IndexerRpcConfig::at_slot(slot)), )?; let transactions = response .transactions .into_iter() .map(|indexed| indexed.transaction) .collect::>(); let sender_balances = decrypt_spendable(&sender, &transactions, &assets) .map_err(|e| anyhow!("decrypt sender transactions: {e:?}"))? .balances; let sender_balance = sender_balances .get_balance(SOL_MINT) // SPL: .get_balance(spl.mint) .expect("failed to fetch sender's utxo"); assert_eq!(sender_balance.amount, DEPOSIT_AMOUNT - TRANSFER_AMOUNT); assert_eq!(sender_balance.utxos.len(), 1); sender_balances }; // Withdraw SOL back to the sender's public balance. // A withdrawal from a confidential balance reveals // sender, recipient, asset and amount. { // 1. Select UTXOs that make up the private balance for the withdrawal. let withdrawal_utxo = sender_balances_after_transfer .get_balance(SOL_MINT) // SPL: .get_balance(spl.mint) .and_then(|balance| balance.utxos.first()) .expect("failed to fetch sender's utxo") .clone(); // 2. Prepare the selected UTXOs as inputs for the zero-knowledge proof. let mut withdrawal = ConfidentialTransaction::new(vec![withdrawal_utxo], sender.pubkey())?; // 3. Build and encrypt the confidential withdrawal. // Encryption hides the private change and produces the ZK prover inputs. withdrawal.withdraw_sol(WITHDRAW_AMOUNT, sender.pubkey())?; // SPL: withdrawal.withdraw(spl.mint, WITHDRAW_AMOUNT, spl.user_token_account)?; let proof_inputs = withdrawal.encrypt(&sender)?; // 4. Fetch the ZK proof to prove the sender can spend the balance. let withdrawal_data = client.prove_transact(proof_inputs, None, &sender)?; // 5. Combine the proof and withdrawal accounts in a single instruction. let withdraw_ix = Transact { payer: sender.pubkey(), input_trees: vec![tree], output_tree: tree, owner_signers: Vec::new(), interface_transfer_accounts: vec![TransactInterfaceTransferAccounts::Sol( TransactSolTransferAccounts { recipient: sender.pubkey(), }, )], // SPL: interface_transfer_accounts: vec![ // SPL: TransactInterfaceTransferAccounts::SplWithdrawal( // SPL: zolana_program::instruction::TransactSplWithdrawalAccounts { // SPL: mint: spl.mint, // SPL: spl_interface: spl.vault, // SPL: user_token_account: spl.user_token_account, // SPL: token_program: spl.token_program, // SPL: }, // SPL: ), // SPL: ], data: withdrawal_data, } .instruction(); // 6. Send and confirm like any Solana transaction. let signature = client.create_and_send_transaction( &[withdraw_ix], sender.pubkey(), &[&sender], client.compute_budget(), )?; let slot = landed_slot(&client, signature)?; // 7. Fetch the sender's UTXOs from this transaction, gated on the withdrawal's slot, // and read the remaining private balance. let response = client.get_shielded_transactions_by_signature( signature, Some(IndexerRpcConfig::at_slot(slot)), )?; let transactions = response .transactions .into_iter() .map(|indexed| indexed.transaction) .collect::>(); let sender_balances = decrypt_spendable(&sender, &transactions, &assets) .map_err(|e| anyhow!("decrypt sender transactions: {e:?}"))? .balances; let sender_balance = sender_balances .get_balance(SOL_MINT) // SPL: .get_balance(spl.mint) .expect("failed to fetch sender's utxo"); assert_eq!( sender_balance.amount, DEPOSIT_AMOUNT - TRANSFER_AMOUNT - WITHDRAW_AMOUNT ); assert_eq!(sender_balance.utxos.len(), 1); // 8. Read remaining private balance and the public SOL balance. let solana_balance = client.get_balance(sender.pubkey())?; println!("withdraw solana_balance={solana_balance} tx={signature}"); // SPL: println!( // SPL: "withdraw user_token={} tx={signature}", // SPL: spl.user_token_account, // SPL: ); } Ok(()) } ``` ## Panduan Terkait ## Tidak menemukan yang Anda cari? Hubungi kami! [Telegram](https://t.me/tilo_light) | [Email](mailto:sales@helius.xyz) | [Kontak](https://www.helius.dev/contact)